./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe031_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 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/pthread-wmm/safe031_tso.oepc.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 25bf107b32c5a41b59e37f88c1586c9e4bdbf561 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:12:34,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:12:34,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:12:34,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:12:34,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:12:34,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:12:34,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:12:34,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:12:34,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:12:34,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:12:34,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:12:34,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:12:34,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:12:34,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:12:34,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:12:34,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:12:34,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:12:34,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:12:34,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:12:34,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:12:34,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:12:34,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:12:34,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:12:34,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:12:34,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:12:34,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:12:34,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:12:34,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:12:34,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:12:34,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:12:34,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:12:34,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:12:34,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:12:34,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:12:34,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:12:34,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:12:34,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:12:34,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:12:34,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:12:34,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:12:34,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:12:34,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:12:34,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:12:34,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:12:34,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:12:34,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:12:34,411 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:12:34,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:12:34,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:12:34,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:12:34,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:12:34,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:12:34,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:12:34,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:12:34,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:12:34,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:12:34,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:12:34,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:12:34,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:12:34,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:12:34,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:12:34,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:12:34,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:12:34,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:12:34,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:12:34,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:12:34,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:12:34,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:12:34,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:12:34,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:12:34,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:12:34,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25bf107b32c5a41b59e37f88c1586c9e4bdbf561 [2020-12-02 12:12:34,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:12:34,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:12:34,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:12:34,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:12:34,923 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:12:34,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe031_tso.oepc.i [2020-12-02 12:12:35,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b0173c57/86590619ebe843a4bd935ba24d7ede2d/FLAG98d70c2ab [2020-12-02 12:12:35,662 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:12:35,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe031_tso.oepc.i [2020-12-02 12:12:35,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b0173c57/86590619ebe843a4bd935ba24d7ede2d/FLAG98d70c2ab [2020-12-02 12:12:35,922 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b0173c57/86590619ebe843a4bd935ba24d7ede2d [2020-12-02 12:12:35,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:12:35,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:12:35,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:12:35,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:12:35,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:12:35,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:12:35" (1/1) ... [2020-12-02 12:12:35,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e8e196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:35, skipping insertion in model container [2020-12-02 12:12:35,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:12:35" (1/1) ... [2020-12-02 12:12:35,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:12:36,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:12:36,235 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe031_tso.oepc.i[950,963] [2020-12-02 12:12:36,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:12:36,445 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:12:36,460 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe031_tso.oepc.i[950,963] [2020-12-02 12:12:36,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:12:36,636 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:12:36,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:36 WrapperNode [2020-12-02 12:12:36,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:12:36,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:12:36,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:12:36,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:12:36,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:36" (1/1) ... [2020-12-02 12:12:36,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:36" (1/1) ... [2020-12-02 12:12:36,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:12:36,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:12:36,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:12:36,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:12:36,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:36" (1/1) ... [2020-12-02 12:12:36,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:36" (1/1) ... [2020-12-02 12:12:36,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:36" (1/1) ... [2020-12-02 12:12:36,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:36" (1/1) ... [2020-12-02 12:12:36,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:36" (1/1) ... [2020-12-02 12:12:36,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:36" (1/1) ... [2020-12-02 12:12:36,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:36" (1/1) ... [2020-12-02 12:12:36,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:12:36,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:12:36,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:12:36,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:12:36,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:12:36,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:12:36,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:12:36,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:12:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:12:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:12:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:12:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:12:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:12:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:12:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:12:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:12:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:12:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:12:36,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:12:36,860 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:12:37,364 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:12:37,364 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:12:37,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:37 BoogieIcfgContainer [2020-12-02 12:12:37,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:12:37,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:12:37,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:12:37,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:12:37,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:12:35" (1/3) ... [2020-12-02 12:12:37,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c817b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:12:37, skipping insertion in model container [2020-12-02 12:12:37,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:36" (2/3) ... [2020-12-02 12:12:37,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c817b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:12:37, skipping insertion in model container [2020-12-02 12:12:37,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:37" (3/3) ... [2020-12-02 12:12:37,375 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2020-12-02 12:12:37,390 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:12:37,390 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:12:37,395 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:12:37,395 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:12:37,443 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,443 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,443 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,443 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,444 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,444 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,444 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,444 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,445 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,445 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,445 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,445 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,446 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,446 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,447 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,447 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,448 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,448 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,449 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,449 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,449 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,449 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,449 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,450 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,450 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,450 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,450 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,451 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,453 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,460 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:37,466 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:12:37,479 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:12:37,502 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:12:37,502 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:12:37,503 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:12:37,503 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:12:37,503 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:12:37,503 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:12:37,503 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:12:37,503 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:12:37,515 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:12:37,517 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-02 12:12:37,521 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-02 12:12:37,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-02 12:12:37,572 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-02 12:12:37,572 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:12:37,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:12:37,579 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:12:40,811 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-02 12:12:41,110 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-02 12:12:41,230 INFO L131 LiptonReduction]: Checked pairs total: 2656 [2020-12-02 12:12:41,230 INFO L133 LiptonReduction]: Total number of compositions: 62 [2020-12-02 12:12:41,237 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-02 12:12:41,283 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-02 12:12:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-02 12:12:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:12:41,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:41,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:41,295 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:41,309 INFO L82 PathProgramCache]: Analyzing trace with hash -73223859, now seen corresponding path program 1 times [2020-12-02 12:12:41,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:41,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277044809] [2020-12-02 12:12:41,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:12:41,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277044809] [2020-12-02 12:12:41,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:41,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:12:41,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059413497] [2020-12-02 12:12:41,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:12:41,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:41,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:12:41,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:12:41,581 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-02 12:12:41,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:41,623 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-02 12:12:41,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:12:41,624 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 12:12:41,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:41,641 INFO L225 Difference]: With dead ends: 362 [2020-12-02 12:12:41,642 INFO L226 Difference]: Without dead ends: 298 [2020-12-02 12:12:41,643 INFO L677 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 [2020-12-02 12:12:41,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-02 12:12:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-02 12:12:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-02 12:12:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-02 12:12:41,720 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-02 12:12:41,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:41,721 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-02 12:12:41,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:12:41,722 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-02 12:12:41,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:12:41,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:41,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:41,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:12:41,724 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:41,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:41,725 INFO L82 PathProgramCache]: Analyzing trace with hash 2025018626, now seen corresponding path program 1 times [2020-12-02 12:12:41,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:41,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996444421] [2020-12-02 12:12:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:12:41,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996444421] [2020-12-02 12:12:41,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:41,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:12:41,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804512766] [2020-12-02 12:12:41,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:12:41,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:41,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:12:41,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:12:41,924 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-02 12:12:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:42,022 INFO L93 Difference]: Finished difference Result 556 states and 1507 transitions. [2020-12-02 12:12:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:12:42,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:12:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:42,029 INFO L225 Difference]: With dead ends: 556 [2020-12-02 12:12:42,030 INFO L226 Difference]: Without dead ends: 414 [2020-12-02 12:12:42,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-12-02 12:12:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 338. [2020-12-02 12:12:42,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-12-02 12:12:42,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 924 transitions. [2020-12-02 12:12:42,106 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 924 transitions. Word has length 9 [2020-12-02 12:12:42,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:42,108 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 924 transitions. [2020-12-02 12:12:42,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:12:42,108 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 924 transitions. [2020-12-02 12:12:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:12:42,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:42,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:42,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:12:42,111 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:42,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:42,112 INFO L82 PathProgramCache]: Analyzing trace with hash 642582749, now seen corresponding path program 1 times [2020-12-02 12:12:42,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:42,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262013922] [2020-12-02 12:12:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:12:42,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262013922] [2020-12-02 12:12:42,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:42,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:42,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368015019] [2020-12-02 12:12:42,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:42,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:42,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:42,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:42,265 INFO L87 Difference]: Start difference. First operand 338 states and 924 transitions. Second operand 5 states. [2020-12-02 12:12:42,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:42,349 INFO L93 Difference]: Finished difference Result 464 states and 1199 transitions. [2020-12-02 12:12:42,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:42,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:12:42,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:42,353 INFO L225 Difference]: With dead ends: 464 [2020-12-02 12:12:42,354 INFO L226 Difference]: Without dead ends: 390 [2020-12-02 12:12:42,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:42,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-12-02 12:12:42,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 326. [2020-12-02 12:12:42,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-12-02 12:12:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 880 transitions. [2020-12-02 12:12:42,373 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 880 transitions. Word has length 10 [2020-12-02 12:12:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:42,374 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 880 transitions. [2020-12-02 12:12:42,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 880 transitions. [2020-12-02 12:12:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:12:42,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:42,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:42,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:12:42,377 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:42,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:42,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1648891103, now seen corresponding path program 1 times [2020-12-02 12:12:42,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:42,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757599396] [2020-12-02 12:12:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:12:42,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757599396] [2020-12-02 12:12:42,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:42,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:42,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340932445] [2020-12-02 12:12:42,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:42,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:42,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:42,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:42,478 INFO L87 Difference]: Start difference. First operand 326 states and 880 transitions. Second operand 5 states. [2020-12-02 12:12:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:42,565 INFO L93 Difference]: Finished difference Result 440 states and 1121 transitions. [2020-12-02 12:12:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:42,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:12:42,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:42,569 INFO L225 Difference]: With dead ends: 440 [2020-12-02 12:12:42,569 INFO L226 Difference]: Without dead ends: 362 [2020-12-02 12:12:42,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:42,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-12-02 12:12:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 298. [2020-12-02 12:12:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-02 12:12:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 794 transitions. [2020-12-02 12:12:42,583 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 794 transitions. Word has length 10 [2020-12-02 12:12:42,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:42,583 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 794 transitions. [2020-12-02 12:12:42,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:42,584 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 794 transitions. [2020-12-02 12:12:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:12:42,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:42,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:42,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:12:42,603 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:42,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:42,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1554730330, now seen corresponding path program 1 times [2020-12-02 12:12:42,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:42,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531859308] [2020-12-02 12:12:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:42,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:12:42,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531859308] [2020-12-02 12:12:42,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:42,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:12:42,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900707662] [2020-12-02 12:12:42,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:12:42,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:42,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:12:42,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:12:42,656 INFO L87 Difference]: Start difference. First operand 298 states and 794 transitions. Second operand 3 states. [2020-12-02 12:12:42,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:42,666 INFO L93 Difference]: Finished difference Result 237 states and 555 transitions. [2020-12-02 12:12:42,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:12:42,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-02 12:12:42,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:42,669 INFO L225 Difference]: With dead ends: 237 [2020-12-02 12:12:42,669 INFO L226 Difference]: Without dead ends: 237 [2020-12-02 12:12:42,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:12:42,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-02 12:12:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-12-02 12:12:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-02 12:12:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 555 transitions. [2020-12-02 12:12:42,679 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 555 transitions. Word has length 11 [2020-12-02 12:12:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:42,680 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 555 transitions. [2020-12-02 12:12:42,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:12:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 555 transitions. [2020-12-02 12:12:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:12:42,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:42,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:42,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:12:42,683 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:42,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:42,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1718582767, now seen corresponding path program 1 times [2020-12-02 12:12:42,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:42,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647772007] [2020-12-02 12:12:42,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:12:42,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647772007] [2020-12-02 12:12:42,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:42,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:42,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991493804] [2020-12-02 12:12:42,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:12:42,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:42,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:12:42,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:12:42,738 INFO L87 Difference]: Start difference. First operand 237 states and 555 transitions. Second operand 4 states. [2020-12-02 12:12:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:42,761 INFO L93 Difference]: Finished difference Result 164 states and 343 transitions. [2020-12-02 12:12:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:12:42,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:12:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:42,763 INFO L225 Difference]: With dead ends: 164 [2020-12-02 12:12:42,763 INFO L226 Difference]: Without dead ends: 160 [2020-12-02 12:12:42,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:12:42,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-02 12:12:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2020-12-02 12:12:42,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-02 12:12:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 303 transitions. [2020-12-02 12:12:42,771 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 303 transitions. Word has length 13 [2020-12-02 12:12:42,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:42,771 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 303 transitions. [2020-12-02 12:12:42,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:12:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 303 transitions. [2020-12-02 12:12:42,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:12:42,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:42,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:42,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:12:42,774 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:42,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:42,775 INFO L82 PathProgramCache]: Analyzing trace with hash 669066047, now seen corresponding path program 1 times [2020-12-02 12:12:42,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:42,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125187987] [2020-12-02 12:12:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:12:42,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125187987] [2020-12-02 12:12:42,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:42,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:12:42,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252238423] [2020-12-02 12:12:42,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:42,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:42,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:42,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:42,884 INFO L87 Difference]: Start difference. First operand 148 states and 303 transitions. Second operand 5 states. [2020-12-02 12:12:42,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:42,944 INFO L93 Difference]: Finished difference Result 184 states and 367 transitions. [2020-12-02 12:12:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:42,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:12:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:42,946 INFO L225 Difference]: With dead ends: 184 [2020-12-02 12:12:42,947 INFO L226 Difference]: Without dead ends: 140 [2020-12-02 12:12:42,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:12:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-02 12:12:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 111. [2020-12-02 12:12:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-02 12:12:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 212 transitions. [2020-12-02 12:12:42,952 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 212 transitions. Word has length 15 [2020-12-02 12:12:42,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:42,953 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 212 transitions. [2020-12-02 12:12:42,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 212 transitions. [2020-12-02 12:12:42,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:12:42,954 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:42,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:42,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:12:42,955 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:42,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:42,955 INFO L82 PathProgramCache]: Analyzing trace with hash 660741003, now seen corresponding path program 1 times [2020-12-02 12:12:42,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:42,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84571551] [2020-12-02 12:12:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:12:43,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84571551] [2020-12-02 12:12:43,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:43,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:12:43,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309521832] [2020-12-02 12:12:43,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:43,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:43,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:43,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:43,015 INFO L87 Difference]: Start difference. First operand 111 states and 212 transitions. Second operand 5 states. [2020-12-02 12:12:43,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:43,060 INFO L93 Difference]: Finished difference Result 152 states and 279 transitions. [2020-12-02 12:12:43,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:12:43,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:12:43,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:43,062 INFO L225 Difference]: With dead ends: 152 [2020-12-02 12:12:43,062 INFO L226 Difference]: Without dead ends: 135 [2020-12-02 12:12:43,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:12:43,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-02 12:12:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 110. [2020-12-02 12:12:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-02 12:12:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 209 transitions. [2020-12-02 12:12:43,068 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 209 transitions. Word has length 15 [2020-12-02 12:12:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:43,069 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 209 transitions. [2020-12-02 12:12:43,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 209 transitions. [2020-12-02 12:12:43,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:12:43,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:43,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:43,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:12:43,070 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:43,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:43,071 INFO L82 PathProgramCache]: Analyzing trace with hash 2129101485, now seen corresponding path program 2 times [2020-12-02 12:12:43,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:43,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572537268] [2020-12-02 12:12:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:12:43,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572537268] [2020-12-02 12:12:43,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:43,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:12:43,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519059387] [2020-12-02 12:12:43,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:43,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:43,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:43,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:43,118 INFO L87 Difference]: Start difference. First operand 110 states and 209 transitions. Second operand 5 states. [2020-12-02 12:12:43,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:43,134 INFO L93 Difference]: Finished difference Result 88 states and 174 transitions. [2020-12-02 12:12:43,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:12:43,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:12:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:43,135 INFO L225 Difference]: With dead ends: 88 [2020-12-02 12:12:43,135 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:12:43,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:12:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:12:43,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:12:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:12:43,137 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-02 12:12:43,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:43,137 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:12:43,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:12:43,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:12:43,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:12:43,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:12:43 BasicIcfg [2020-12-02 12:12:43,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:12:43,143 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:12:43,143 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:12:43,143 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:12:43,144 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:37" (3/4) ... [2020-12-02 12:12:43,147 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:12:43,156 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:12:43,156 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:12:43,156 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:12:43,162 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:12:43,163 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:12:43,163 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:12:43,163 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:12:43,228 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:12:43,231 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:12:43,233 INFO L168 Benchmark]: Toolchain (without parser) took 7303.31 ms. Allocated memory was 48.2 MB in the beginning and 125.8 MB in the end (delta: 77.6 MB). Free memory was 24.3 MB in the beginning and 84.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:43,234 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 48.2 MB. Free memory is still 33.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:12:43,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.08 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.0 MB in the beginning and 35.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:43,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.85 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 33.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:43,237 INFO L168 Benchmark]: Boogie Preprocessor took 29.34 ms. Allocated memory is still 58.7 MB. Free memory was 33.0 MB in the beginning and 31.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:12:43,238 INFO L168 Benchmark]: RCFGBuilder took 642.33 ms. Allocated memory is still 58.7 MB. Free memory was 31.7 MB in the beginning and 23.8 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:43,241 INFO L168 Benchmark]: TraceAbstraction took 5774.40 ms. Allocated memory was 58.7 MB in the beginning and 125.8 MB in the end (delta: 67.1 MB). Free memory was 23.4 MB in the beginning and 87.1 MB in the end (delta: -63.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:43,242 INFO L168 Benchmark]: Witness Printer took 88.47 ms. Allocated memory is still 125.8 MB. Free memory was 87.1 MB in the beginning and 84.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:43,245 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 48.2 MB. Free memory is still 33.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 704.08 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.0 MB in the beginning and 35.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.85 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 33.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.34 ms. Allocated memory is still 58.7 MB. Free memory was 33.0 MB in the beginning and 31.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 642.33 ms. Allocated memory is still 58.7 MB. Free memory was 31.7 MB in the beginning and 23.8 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5774.40 ms. Allocated memory was 58.7 MB in the beginning and 125.8 MB in the end (delta: 67.1 MB). Free memory was 23.4 MB in the beginning and 87.1 MB in the end (delta: -63.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. * Witness Printer took 88.47 ms. Allocated memory is still 125.8 MB. Free memory was 87.1 MB in the beginning and 84.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 730 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 45 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 2656 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 218 SDtfs, 192 SDslu, 300 SDs, 0 SdLazy, 115 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 270 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 4879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...