./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2a345af5d6f13ead3ee6626526882fdf8003804 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:23:00,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:23:00,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:23:00,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:23:00,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:23:00,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:23:00,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:23:00,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:23:00,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:23:00,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:23:00,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:23:00,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:23:00,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:23:00,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:23:00,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:23:00,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:23:00,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:23:00,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:23:00,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:23:00,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:23:00,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:23:00,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:23:00,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:23:00,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:23:00,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:23:00,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:23:00,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:23:00,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:23:00,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:23:00,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:23:00,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:23:00,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:23:00,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:23:00,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:23:00,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:23:00,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:23:00,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:23:00,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:23:00,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:23:00,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:23:00,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:23:00,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:23:00,554 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:23:00,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:23:00,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:23:00,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:23:00,555 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:23:00,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:23:00,555 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:23:00,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:23:00,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:23:00,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:23:00,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:23:00,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:23:00,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:23:00,556 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:23:00,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:23:00,556 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:23:00,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:23:00,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:23:00,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:23:00,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:23:00,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:23:00,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:23:00,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:23:00,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:23:00,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:23:00,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:23:00,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:23:00,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:23:00,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:23:00,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer 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(__VERIFIER_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 -> e2a345af5d6f13ead3ee6626526882fdf8003804 [2019-12-07 17:23:00,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:23:00,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:23:00,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:23:00,667 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:23:00,667 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:23:00,668 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i [2019-12-07 17:23:00,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer/data/cf3d47574/f639423cc4384e69bb19b3c9702efa4c/FLAGbd6b80ecd [2019-12-07 17:23:01,243 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:23:01,244 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i [2019-12-07 17:23:01,253 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer/data/cf3d47574/f639423cc4384e69bb19b3c9702efa4c/FLAGbd6b80ecd [2019-12-07 17:23:01,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer/data/cf3d47574/f639423cc4384e69bb19b3c9702efa4c [2019-12-07 17:23:01,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:23:01,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:23:01,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:23:01,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:23:01,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:23:01,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:23:01" (1/1) ... [2019-12-07 17:23:01,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443dd33b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:01, skipping insertion in model container [2019-12-07 17:23:01,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:23:01" (1/1) ... [2019-12-07 17:23:01,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:23:01,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:23:01,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:23:01,977 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:23:02,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:23:02,055 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:23:02,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:02 WrapperNode [2019-12-07 17:23:02,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:23:02,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:23:02,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:23:02,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:23:02,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:02" (1/1) ... [2019-12-07 17:23:02,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:02" (1/1) ... [2019-12-07 17:23:02,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:23:02,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:23:02,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:23:02,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:23:02,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:02" (1/1) ... [2019-12-07 17:23:02,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:02" (1/1) ... [2019-12-07 17:23:02,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:02" (1/1) ... [2019-12-07 17:23:02,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:02" (1/1) ... [2019-12-07 17:23:02,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:02" (1/1) ... [2019-12-07 17:23:02,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:02" (1/1) ... [2019-12-07 17:23:02,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:02" (1/1) ... [2019-12-07 17:23:02,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:23:02,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:23:02,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:23:02,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:23:02,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer/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 [2019-12-07 17:23:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 17:23:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 17:23:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:23:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:23:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 17:23:02,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 17:23:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 17:23:02,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 17:23:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 17:23:02,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 17:23:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 17:23:02,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:23:02,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:23:02,155 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 17:23:02,335 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:23:02,335 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 17:23:02,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:23:02 BoogieIcfgContainer [2019-12-07 17:23:02,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:23:02,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:23:02,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:23:02,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:23:02,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:23:01" (1/3) ... [2019-12-07 17:23:02,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302bc63c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:23:02, skipping insertion in model container [2019-12-07 17:23:02,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:23:02" (2/3) ... [2019-12-07 17:23:02,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302bc63c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:23:02, skipping insertion in model container [2019-12-07 17:23:02,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:23:02" (3/3) ... [2019-12-07 17:23:02,342 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2019-12-07 17:23:02,348 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 17:23:02,349 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:23:02,353 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:23:02,353 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 17:23:02,370 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,370 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,370 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,370 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,371 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,371 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,371 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,371 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,371 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,371 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,372 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,372 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,372 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,372 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,373 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,373 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,373 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,373 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:23:02,386 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 17:23:02,399 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:23:02,399 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:23:02,399 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:23:02,399 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:23:02,400 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:23:02,400 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:23:02,400 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:23:02,400 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:23:02,408 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-07 17:23:02,409 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 17:23:02,439 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 17:23:02,439 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 17:23:02,443 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 17:23:02,445 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 17:23:02,454 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 17:23:02,454 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 17:23:02,455 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 17:23:02,456 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 17:23:02,457 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 17:23:03,200 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-12-07 17:23:03,331 INFO L206 etLargeBlockEncoding]: Checked pairs total: 478 [2019-12-07 17:23:03,331 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-07 17:23:03,333 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-07 17:23:03,342 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-07 17:23:03,344 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-07 17:23:03,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 17:23:03,349 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:23:03,349 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:23:03,350 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:23:03,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:23:03,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1804038140, now seen corresponding path program 1 times [2019-12-07 17:23:03,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:23:03,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939602925] [2019-12-07 17:23:03,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:23:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:23:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:23:03,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939602925] [2019-12-07 17:23:03,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:23:03,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:23:03,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065723461] [2019-12-07 17:23:03,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:23:03,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:23:03,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:23:03,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:23:03,567 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-07 17:23:03,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:23:03,612 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-07 17:23:03,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:23:03,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 17:23:03,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:23:03,623 INFO L225 Difference]: With dead ends: 58 [2019-12-07 17:23:03,623 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 17:23:03,624 INFO L630 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 [2019-12-07 17:23:03,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 17:23:03,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 17:23:03,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 17:23:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 17:23:03,649 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 17:23:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:23:03,649 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 17:23:03,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:23:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 17:23:03,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 17:23:03,650 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:23:03,650 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:23:03,650 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:23:03,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:23:03,650 INFO L82 PathProgramCache]: Analyzing trace with hash 982750768, now seen corresponding path program 1 times [2019-12-07 17:23:03,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:23:03,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054189711] [2019-12-07 17:23:03,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:23:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:23:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:23:03,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054189711] [2019-12-07 17:23:03,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:23:03,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:23:03,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365524617] [2019-12-07 17:23:03,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:23:03,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:23:03,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:23:03,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:23:03,713 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 4 states. [2019-12-07 17:23:03,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:23:03,723 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2019-12-07 17:23:03,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:23:03,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 17:23:03,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:23:03,724 INFO L225 Difference]: With dead ends: 39 [2019-12-07 17:23:03,724 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 17:23:03,725 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:23:03,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 17:23:03,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-12-07 17:23:03,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 17:23:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 61 transitions. [2019-12-07 17:23:03,729 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 61 transitions. Word has length 9 [2019-12-07 17:23:03,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:23:03,729 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 61 transitions. [2019-12-07 17:23:03,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:23:03,729 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 61 transitions. [2019-12-07 17:23:03,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 17:23:03,730 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:23:03,730 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:23:03,730 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:23:03,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:23:03,730 INFO L82 PathProgramCache]: Analyzing trace with hash 90665039, now seen corresponding path program 1 times [2019-12-07 17:23:03,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:23:03,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958588570] [2019-12-07 17:23:03,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:23:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:23:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:23:03,782 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958588570] [2019-12-07 17:23:03,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:23:03,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:23:03,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957417330] [2019-12-07 17:23:03,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:23:03,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:23:03,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:23:03,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:23:03,783 INFO L87 Difference]: Start difference. First operand 35 states and 61 transitions. Second operand 5 states. [2019-12-07 17:23:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:23:03,814 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2019-12-07 17:23:03,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:23:03,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 17:23:03,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:23:03,815 INFO L225 Difference]: With dead ends: 39 [2019-12-07 17:23:03,815 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 17:23:03,816 INFO L630 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 [2019-12-07 17:23:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 17:23:03,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-07 17:23:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 17:23:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 49 transitions. [2019-12-07 17:23:03,820 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 49 transitions. Word has length 9 [2019-12-07 17:23:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:23:03,820 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 49 transitions. [2019-12-07 17:23:03,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:23:03,820 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2019-12-07 17:23:03,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:23:03,821 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:23:03,821 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:23:03,821 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:23:03,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:23:03,821 INFO L82 PathProgramCache]: Analyzing trace with hash 400560283, now seen corresponding path program 1 times [2019-12-07 17:23:03,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:23:03,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148235041] [2019-12-07 17:23:03,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:23:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:23:03,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:23:03,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148235041] [2019-12-07 17:23:03,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:23:03,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:23:03,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444504382] [2019-12-07 17:23:03,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:23:03,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:23:03,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:23:03,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:23:03,883 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 6 states. [2019-12-07 17:23:03,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:23:03,924 INFO L93 Difference]: Finished difference Result 30 states and 45 transitions. [2019-12-07 17:23:03,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:23:03,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 17:23:03,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:23:03,924 INFO L225 Difference]: With dead ends: 30 [2019-12-07 17:23:03,924 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 17:23:03,925 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:23:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 17:23:03,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-12-07 17:23:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 17:23:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2019-12-07 17:23:03,927 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 35 transitions. Word has length 10 [2019-12-07 17:23:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:23:03,927 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 35 transitions. [2019-12-07 17:23:03,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:23:03,927 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 35 transitions. [2019-12-07 17:23:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:23:03,928 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:23:03,928 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:23:03,928 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:23:03,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:23:03,928 INFO L82 PathProgramCache]: Analyzing trace with hash -525836137, now seen corresponding path program 1 times [2019-12-07 17:23:03,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:23:03,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765033784] [2019-12-07 17:23:03,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:23:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:23:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:23:03,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765033784] [2019-12-07 17:23:03,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:23:03,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:23:03,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057424755] [2019-12-07 17:23:03,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:23:03,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:23:03,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:23:03,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:23:03,973 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. Second operand 5 states. [2019-12-07 17:23:03,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:23:03,985 INFO L93 Difference]: Finished difference Result 26 states and 37 transitions. [2019-12-07 17:23:03,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:23:03,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 17:23:03,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:23:03,986 INFO L225 Difference]: With dead ends: 26 [2019-12-07 17:23:03,986 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 17:23:03,986 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:23:03,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 17:23:03,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 17:23:03,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 17:23:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-07 17:23:03,988 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-12-07 17:23:03,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:23:03,988 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-07 17:23:03,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:23:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-07 17:23:03,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:23:03,988 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:23:03,988 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:23:03,988 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:23:03,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:23:03,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1231559623, now seen corresponding path program 2 times [2019-12-07 17:23:03,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:23:03,989 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664075287] [2019-12-07 17:23:03,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:23:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:23:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:23:04,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664075287] [2019-12-07 17:23:04,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:23:04,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:23:04,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730014717] [2019-12-07 17:23:04,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:23:04,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:23:04,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:23:04,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:23:04,041 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 5 states. [2019-12-07 17:23:04,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:23:04,051 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-07 17:23:04,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:23:04,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 17:23:04,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:23:04,052 INFO L225 Difference]: With dead ends: 11 [2019-12-07 17:23:04,052 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:23:04,053 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:23:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:23:04,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:23:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:23:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:23:04,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 17:23:04,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:23:04,053 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:23:04,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:23:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:23:04,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:23:04,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:23:04 BasicIcfg [2019-12-07 17:23:04,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:23:04,058 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:23:04,058 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:23:04,058 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:23:04,058 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:23:02" (3/4) ... [2019-12-07 17:23:04,061 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:23:04,067 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 17:23:04,067 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 17:23:04,067 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 17:23:04,072 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 17:23:04,072 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 17:23:04,072 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 17:23:04,109 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d287453f-ae5b-4253-83be-4cb5fe1ba008/bin/uautomizer/witness.graphml [2019-12-07 17:23:04,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:23:04,111 INFO L168 Benchmark]: Toolchain (without parser) took 2403.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.1 MB in the beginning and 996.8 MB in the end (delta: -58.7 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:23:04,111 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:23:04,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.1 MB in the beginning and 1.1 GB in the end (delta: -126.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:23:04,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:23:04,113 INFO L168 Benchmark]: Boogie Preprocessor took 19.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:23:04,113 INFO L168 Benchmark]: RCFGBuilder took 227.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:23:04,113 INFO L168 Benchmark]: TraceAbstraction took 1720.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 998.5 MB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:23:04,114 INFO L168 Benchmark]: Witness Printer took 52.26 ms. Allocated memory is still 1.1 GB. Free memory was 998.5 MB in the beginning and 996.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:23:04,116 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 348.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.1 MB in the beginning and 1.1 GB in the end (delta: -126.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 227.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1720.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 998.5 MB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. * Witness Printer took 52.26 ms. Allocated memory is still 1.1 GB. Free memory was 998.5 MB in the beginning and 996.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 63 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 232 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 478 CheckedPairsTotal, 47 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 85 SDslu, 44 SDs, 0 SdLazy, 58 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 2686 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...