./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe036_pso.opt.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/safe036_pso.opt.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 b64ea78786cb6c8b3dc8bcda02edbf04e2adea54 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:13:33,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:13:33,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:13:33,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:13:33,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:13:33,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:13:33,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:13:33,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:13:33,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:13:33,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:13:33,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:13:33,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:13:33,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:13:33,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:13:33,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:13:33,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:13:33,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:13:33,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:13:33,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:13:33,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:13:33,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:13:33,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:13:33,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:13:33,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:13:33,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:13:33,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:13:33,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:13:33,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:13:33,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:13:33,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:13:33,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:13:33,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:13:33,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:13:33,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:13:33,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:13:33,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:13:33,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:13:33,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:13:33,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:13:33,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:13:33,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:13:33,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:13:33,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:13:33,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:13:33,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:13:33,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:13:33,869 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:13:33,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:13:33,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:13:33,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:13:33,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:13:33,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:13:33,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:13:33,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:13:33,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:13:33,873 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:13:33,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:13:33,873 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:13:33,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:13:33,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:13:33,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:13:33,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:13:33,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:13:33,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:13:33,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:13:33,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:13:33,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:13:33,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:13:33,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:13:33,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:13:33,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:13:33,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b64ea78786cb6c8b3dc8bcda02edbf04e2adea54 [2020-12-02 12:13:34,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:13:34,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:13:34,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:13:34,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:13:34,399 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:13:34,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe036_pso.opt.i [2020-12-02 12:13:34,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caad1442d/3a6742a1e69e4babad3a3dbced4a9e5f/FLAG4355b1da6 [2020-12-02 12:13:35,341 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:13:35,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_pso.opt.i [2020-12-02 12:13:35,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caad1442d/3a6742a1e69e4babad3a3dbced4a9e5f/FLAG4355b1da6 [2020-12-02 12:13:35,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caad1442d/3a6742a1e69e4babad3a3dbced4a9e5f [2020-12-02 12:13:35,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:13:35,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:13:35,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:13:35,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:13:35,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:13:35,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:13:35" (1/1) ... [2020-12-02 12:13:35,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@942d99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:35, skipping insertion in model container [2020-12-02 12:13:35,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:13:35" (1/1) ... [2020-12-02 12:13:35,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:13:35,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:13:35,900 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/safe036_pso.opt.i[949,962] [2020-12-02 12:13:36,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:13:36,167 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:13:36,183 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/safe036_pso.opt.i[949,962] [2020-12-02 12:13:36,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:13:36,390 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:13:36,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:36 WrapperNode [2020-12-02 12:13:36,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:13:36,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:13:36,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:13:36,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:13:36,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:36" (1/1) ... [2020-12-02 12:13:36,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:36" (1/1) ... [2020-12-02 12:13:36,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:13:36,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:13:36,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:13:36,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:13:36,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:36" (1/1) ... [2020-12-02 12:13:36,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:36" (1/1) ... [2020-12-02 12:13:36,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:36" (1/1) ... [2020-12-02 12:13:36,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:36" (1/1) ... [2020-12-02 12:13:36,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:36" (1/1) ... [2020-12-02 12:13:36,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:36" (1/1) ... [2020-12-02 12:13:36,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:36" (1/1) ... [2020-12-02 12:13:36,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:13:36,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:13:36,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:13:36,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:13:36,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:36" (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 12:13:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:13:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:13:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:13:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:13:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:13:36,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:13:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:13:36,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:13:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:13:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:13:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:13:36,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:13:36,628 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 12:13:37,082 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:13:37,083 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:13:37,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:13:37 BoogieIcfgContainer [2020-12-02 12:13:37,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:13:37,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:13:37,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:13:37,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:13:37,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:13:35" (1/3) ... [2020-12-02 12:13:37,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e87fe71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:13:37, skipping insertion in model container [2020-12-02 12:13:37,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:36" (2/3) ... [2020-12-02 12:13:37,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e87fe71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:13:37, skipping insertion in model container [2020-12-02 12:13:37,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:13:37" (3/3) ... [2020-12-02 12:13:37,095 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_pso.opt.i [2020-12-02 12:13:37,114 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:13:37,114 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:13:37,119 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:13:37,120 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:13:37,153 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,153 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,153 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,154 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,154 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,154 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,154 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,154 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,155 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,155 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,155 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,155 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,156 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,156 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,156 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,156 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,157 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,157 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,157 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,157 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,167 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,168 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,168 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,168 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,170 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,171 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,171 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,171 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,177 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,177 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,177 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,177 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:37,180 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:13:37,193 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-02 12:13:37,218 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:13:37,218 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:13:37,219 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:13:37,219 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:13:37,219 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:13:37,219 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:13:37,219 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:13:37,219 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:13:37,233 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:13:37,236 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-02 12:13:37,240 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-02 12:13:37,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2020-12-02 12:13:37,288 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2020-12-02 12:13:37,289 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:13:37,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2020-12-02 12:13:37,295 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2020-12-02 12:13:38,912 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-02 12:13:39,790 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:13:39,897 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-02 12:13:40,110 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:13:40,221 INFO L131 LiptonReduction]: Checked pairs total: 1354 [2020-12-02 12:13:40,221 INFO L133 LiptonReduction]: Total number of compositions: 55 [2020-12-02 12:13:40,229 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-12-02 12:13:40,247 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-12-02 12:13:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-02 12:13:40,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 12:13:40,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:40,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 12:13:40,256 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:40,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:40,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1865783441, now seen corresponding path program 1 times [2020-12-02 12:13:40,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:40,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183151324] [2020-12-02 12:13:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:40,510 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 12:13:40,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183151324] [2020-12-02 12:13:40,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:40,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:13:40,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425553481] [2020-12-02 12:13:40,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:13:40,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:40,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:13:40,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:13:40,547 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-12-02 12:13:40,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:40,575 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-12-02 12:13:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:13:40,576 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-02 12:13:40,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:40,589 INFO L225 Difference]: With dead ends: 90 [2020-12-02 12:13:40,589 INFO L226 Difference]: Without dead ends: 74 [2020-12-02 12:13:40,591 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 12:13:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-02 12:13:40,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-02 12:13:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-02 12:13:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-12-02 12:13:40,657 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-12-02 12:13:40,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:40,661 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-12-02 12:13:40,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:13:40,662 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-12-02 12:13:40,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-02 12:13:40,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:40,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:40,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:13:40,665 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:40,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:40,673 INFO L82 PathProgramCache]: Analyzing trace with hash -2004756257, now seen corresponding path program 1 times [2020-12-02 12:13:40,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:40,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603998952] [2020-12-02 12:13:40,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:40,922 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 12:13:40,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603998952] [2020-12-02 12:13:40,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:40,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:13:40,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676772496] [2020-12-02 12:13:40,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:13:40,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:40,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:13:40,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:13:40,927 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-12-02 12:13:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:40,978 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-12-02 12:13:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:13:40,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-02 12:13:40,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:40,983 INFO L225 Difference]: With dead ends: 63 [2020-12-02 12:13:40,983 INFO L226 Difference]: Without dead ends: 47 [2020-12-02 12:13:40,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 12:13:40,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-02 12:13:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-02 12:13:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-02 12:13:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-12-02 12:13:41,005 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-12-02 12:13:41,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:41,005 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-12-02 12:13:41,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:13:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-12-02 12:13:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:13:41,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:41,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:41,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:13:41,008 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:41,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:41,019 INFO L82 PathProgramCache]: Analyzing trace with hash 531180577, now seen corresponding path program 1 times [2020-12-02 12:13:41,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:41,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294264686] [2020-12-02 12:13:41,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:41,145 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 12:13:41,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294264686] [2020-12-02 12:13:41,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:41,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:13:41,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68022987] [2020-12-02 12:13:41,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:13:41,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:41,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:13:41,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:13:41,148 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2020-12-02 12:13:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:41,196 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-12-02 12:13:41,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:13:41,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:13:41,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:41,201 INFO L225 Difference]: With dead ends: 36 [2020-12-02 12:13:41,202 INFO L226 Difference]: Without dead ends: 29 [2020-12-02 12:13:41,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 12:13:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-02 12:13:41,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-02 12:13:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-02 12:13:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-12-02 12:13:41,217 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-12-02 12:13:41,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:41,217 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-12-02 12:13:41,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:13:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-12-02 12:13:41,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:13:41,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:41,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:41,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:13:41,221 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:41,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:41,224 INFO L82 PathProgramCache]: Analyzing trace with hash 2005536794, now seen corresponding path program 1 times [2020-12-02 12:13:41,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:41,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805181851] [2020-12-02 12:13:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:41,335 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 12:13:41,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805181851] [2020-12-02 12:13:41,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:41,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:13:41,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31040972] [2020-12-02 12:13:41,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:13:41,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:41,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:13:41,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:13:41,338 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-12-02 12:13:41,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:41,366 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-12-02 12:13:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:13:41,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:13:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:41,367 INFO L225 Difference]: With dead ends: 37 [2020-12-02 12:13:41,367 INFO L226 Difference]: Without dead ends: 17 [2020-12-02 12:13:41,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:13:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-02 12:13:41,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-02 12:13:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-02 12:13:41,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-02 12:13:41,373 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-12-02 12:13:41,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:41,374 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-02 12:13:41,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:13:41,374 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-02 12:13:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:13:41,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:41,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:41,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:13:41,377 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:41,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:41,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1560668438, now seen corresponding path program 2 times [2020-12-02 12:13:41,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:41,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921719478] [2020-12-02 12:13:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:41,479 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 12:13:41,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921719478] [2020-12-02 12:13:41,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:41,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:13:41,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702571473] [2020-12-02 12:13:41,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:13:41,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:41,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:13:41,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:13:41,484 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-12-02 12:13:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:41,518 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-12-02 12:13:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:13:41,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:13:41,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:41,525 INFO L225 Difference]: With dead ends: 16 [2020-12-02 12:13:41,525 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:13:41,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:13:41,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:13:41,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:13:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:13:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:13:41,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-02 12:13:41,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:41,527 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:13:41,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:13:41,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:13:41,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:13:41,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:13:41,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:13:41 BasicIcfg [2020-12-02 12:13:41,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:13:41,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:13:41,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:13:41,535 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:13:41,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:13:37" (3/4) ... [2020-12-02 12:13:41,540 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:13:41,550 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:13:41,550 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:13:41,557 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-02 12:13:41,558 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:13:41,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:13:41,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:13:41,637 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:13:41,637 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:13:41,639 INFO L168 Benchmark]: Toolchain (without parser) took 6043.44 ms. Allocated memory was 46.1 MB in the beginning and 121.6 MB in the end (delta: 75.5 MB). Free memory was 22.9 MB in the beginning and 94.6 MB in the end (delta: -71.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:41,643 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 46.1 MB. Free memory was 26.7 MB in the beginning and 26.7 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:13:41,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 797.20 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.7 MB in the beginning and 38.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:41,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.55 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 36.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:41,649 INFO L168 Benchmark]: Boogie Preprocessor took 31.81 ms. Allocated memory is still 56.6 MB. Free memory was 36.5 MB in the beginning and 35.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:41,652 INFO L168 Benchmark]: RCFGBuilder took 563.83 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 29.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:41,654 INFO L168 Benchmark]: TraceAbstraction took 4446.66 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 28.7 MB in the beginning and 97.7 MB in the end (delta: -69.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:13:41,655 INFO L168 Benchmark]: Witness Printer took 102.99 ms. Allocated memory is still 121.6 MB. Free memory was 97.7 MB in the beginning and 94.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:41,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 46.1 MB. Free memory was 26.7 MB in the beginning and 26.7 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 797.20 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.7 MB in the beginning and 38.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.55 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 36.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.81 ms. Allocated memory is still 56.6 MB. Free memory was 36.5 MB in the beginning and 35.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 563.83 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 29.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4446.66 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 28.7 MB in the beginning and 97.7 MB in the end (delta: -69.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 102.99 ms. Allocated memory is still 121.6 MB. Free memory was 97.7 MB in the beginning and 94.6 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 465 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 66 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 17 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1354 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 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 63 SDtfs, 62 SDslu, 83 SDs, 0 SdLazy, 34 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...