./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe000_tso.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_14ab70f0-91c1-4204-b9fa-690b3798f269/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/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 5c92fb673e1abae2508967df9896bc7f2db4e949 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:19:24,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:19:24,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:19:24,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:19:24,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:19:24,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:19:24,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:19:24,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:19:24,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:19:24,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:19:24,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:19:24,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:19:24,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:19:24,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:19:24,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:19:24,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:19:24,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:19:24,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:19:24,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:19:24,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:19:24,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:19:24,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:19:24,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:19:24,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:19:24,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:19:24,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:19:24,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:19:24,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:19:24,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:19:24,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:19:24,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:19:24,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:19:24,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:19:24,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:19:24,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:19:24,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:19:24,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:19:24,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:19:24,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:19:24,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:19:24,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:19:24,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 16:19:24,699 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:19:24,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:19:24,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:19:24,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:19:24,700 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:19:24,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:19:24,701 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:19:24,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:19:24,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:19:24,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:19:24,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:19:24,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:19:24,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:19:24,701 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:19:24,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:19:24,702 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:19:24,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:19:24,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:19:24,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:19:24,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:19:24,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:19:24,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:19:24,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:19:24,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:19:24,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:19:24,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 16:19:24,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:19:24,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:19:24,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:19:24,704 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_14ab70f0-91c1-4204-b9fa-690b3798f269/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 -> 5c92fb673e1abae2508967df9896bc7f2db4e949 [2019-12-07 16:19:24,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:19:24,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:19:24,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:19:24,817 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:19:24,817 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:19:24,818 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2019-12-07 16:19:24,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/bin/uautomizer/data/a51473cda/72a1a467ed824530a5cb9541fd9fbc19/FLAG26bd34ebe [2019-12-07 16:19:25,297 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:19:25,297 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2019-12-07 16:19:25,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/bin/uautomizer/data/a51473cda/72a1a467ed824530a5cb9541fd9fbc19/FLAG26bd34ebe [2019-12-07 16:19:25,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/bin/uautomizer/data/a51473cda/72a1a467ed824530a5cb9541fd9fbc19 [2019-12-07 16:19:25,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:19:25,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:19:25,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:19:25,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:19:25,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:19:25,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:19:25" (1/1) ... [2019-12-07 16:19:25,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f04252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25, skipping insertion in model container [2019-12-07 16:19:25,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:19:25" (1/1) ... [2019-12-07 16:19:25,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:19:25,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:19:25,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:19:25,585 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:19:25,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:19:25,663 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:19:25,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25 WrapperNode [2019-12-07 16:19:25,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:19:25,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:19:25,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:19:25,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:19:25,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25" (1/1) ... [2019-12-07 16:19:25,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25" (1/1) ... [2019-12-07 16:19:25,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:19:25,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:19:25,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:19:25,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:19:25,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25" (1/1) ... [2019-12-07 16:19:25,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25" (1/1) ... [2019-12-07 16:19:25,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25" (1/1) ... [2019-12-07 16:19:25,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25" (1/1) ... [2019-12-07 16:19:25,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25" (1/1) ... [2019-12-07 16:19:25,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25" (1/1) ... [2019-12-07 16:19:25,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25" (1/1) ... [2019-12-07 16:19:25,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:19:25,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:19:25,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:19:25,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:19:25,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/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 16:19:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 16:19:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 16:19:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 16:19:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:19:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 16:19:25,758 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 16:19:25,758 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 16:19:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 16:19:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 16:19:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 16:19:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 16:19:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:19:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:19:25,760 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 16:19:25,938 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:19:25,938 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 16:19:25,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:19:25 BoogieIcfgContainer [2019-12-07 16:19:25,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:19:25,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:19:25,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:19:25,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:19:25,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:19:25" (1/3) ... [2019-12-07 16:19:25,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9f4d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:19:25, skipping insertion in model container [2019-12-07 16:19:25,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:19:25" (2/3) ... [2019-12-07 16:19:25,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9f4d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:19:25, skipping insertion in model container [2019-12-07 16:19:25,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:19:25" (3/3) ... [2019-12-07 16:19:25,943 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_tso.oepc.i [2019-12-07 16:19:25,949 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 16:19:25,949 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:19:25,954 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 16:19:25,954 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 16:19:25,971 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,972 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,972 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,972 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,972 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,972 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,973 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,973 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,973 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,973 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,974 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,974 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,974 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,974 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,974 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,975 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,975 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,975 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 16:19:25,993 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 16:19:26,005 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:19:26,005 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:19:26,005 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:19:26,005 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:19:26,005 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:19:26,006 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:19:26,006 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:19:26,006 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:19:26,014 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-07 16:19:26,015 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 16:19:26,043 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 16:19:26,044 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 16:19:26,048 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 16:19:26,050 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 16:19:26,061 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 16:19:26,061 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 16:19:26,062 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 16:19:26,064 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 16:19:26,065 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 16:19:26,812 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-12-07 16:19:26,936 INFO L206 etLargeBlockEncoding]: Checked pairs total: 478 [2019-12-07 16:19:26,937 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-07 16:19:26,939 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-07 16:19:26,948 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-07 16:19:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-07 16:19:26,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 16:19:26,954 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:19:26,955 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:19:26,955 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:19:26,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:19:26,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1804038140, now seen corresponding path program 1 times [2019-12-07 16:19:26,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:19:26,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398468583] [2019-12-07 16:19:26,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:19:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:19:27,168 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 16:19:27,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398468583] [2019-12-07 16:19:27,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:19:27,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:19:27,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931438313] [2019-12-07 16:19:27,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:19:27,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:19:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:19:27,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:19:27,184 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-07 16:19:27,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:19:27,226 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-07 16:19:27,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:19:27,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 16:19:27,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:19:27,237 INFO L225 Difference]: With dead ends: 58 [2019-12-07 16:19:27,238 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 16:19:27,239 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 16:19:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 16:19:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 16:19:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 16:19:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 16:19:27,270 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 16:19:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:19:27,271 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 16:19:27,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:19:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 16:19:27,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:19:27,272 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:19:27,272 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:19:27,272 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:19:27,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:19:27,272 INFO L82 PathProgramCache]: Analyzing trace with hash 982750768, now seen corresponding path program 1 times [2019-12-07 16:19:27,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:19:27,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727936036] [2019-12-07 16:19:27,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:19:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:19:27,348 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 16:19:27,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727936036] [2019-12-07 16:19:27,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:19:27,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:19:27,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723748150] [2019-12-07 16:19:27,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:19:27,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:19:27,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:19:27,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:19:27,350 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 4 states. [2019-12-07 16:19:27,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:19:27,362 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2019-12-07 16:19:27,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:19:27,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 16:19:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:19:27,363 INFO L225 Difference]: With dead ends: 39 [2019-12-07 16:19:27,363 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 16:19:27,364 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 16:19:27,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 16:19:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-12-07 16:19:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 16:19:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 61 transitions. [2019-12-07 16:19:27,369 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 61 transitions. Word has length 9 [2019-12-07 16:19:27,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:19:27,369 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 61 transitions. [2019-12-07 16:19:27,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:19:27,370 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 61 transitions. [2019-12-07 16:19:27,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:19:27,370 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:19:27,370 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:19:27,370 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:19:27,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:19:27,371 INFO L82 PathProgramCache]: Analyzing trace with hash 90665039, now seen corresponding path program 1 times [2019-12-07 16:19:27,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:19:27,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396871737] [2019-12-07 16:19:27,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:19:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:19:27,423 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 16:19:27,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396871737] [2019-12-07 16:19:27,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:19:27,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:19:27,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487032305] [2019-12-07 16:19:27,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:19:27,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:19:27,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:19:27,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:19:27,424 INFO L87 Difference]: Start difference. First operand 35 states and 61 transitions. Second operand 4 states. [2019-12-07 16:19:27,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:19:27,436 INFO L93 Difference]: Finished difference Result 38 states and 61 transitions. [2019-12-07 16:19:27,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:19:27,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 16:19:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:19:27,437 INFO L225 Difference]: With dead ends: 38 [2019-12-07 16:19:27,437 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 16:19:27,437 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 16:19:27,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 16:19:27,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-12-07 16:19:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 16:19:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 53 transitions. [2019-12-07 16:19:27,440 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 53 transitions. Word has length 9 [2019-12-07 16:19:27,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:19:27,441 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 53 transitions. [2019-12-07 16:19:27,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:19:27,441 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2019-12-07 16:19:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 16:19:27,441 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:19:27,441 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:19:27,441 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:19:27,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:19:27,441 INFO L82 PathProgramCache]: Analyzing trace with hash 400560283, now seen corresponding path program 1 times [2019-12-07 16:19:27,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:19:27,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933228911] [2019-12-07 16:19:27,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:19:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:19:27,494 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 16:19:27,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933228911] [2019-12-07 16:19:27,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:19:27,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:19:27,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221194657] [2019-12-07 16:19:27,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:19:27,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:19:27,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:19:27,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:19:27,495 INFO L87 Difference]: Start difference. First operand 31 states and 53 transitions. Second operand 4 states. [2019-12-07 16:19:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:19:27,505 INFO L93 Difference]: Finished difference Result 36 states and 59 transitions. [2019-12-07 16:19:27,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:19:27,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 16:19:27,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:19:27,506 INFO L225 Difference]: With dead ends: 36 [2019-12-07 16:19:27,506 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 16:19:27,507 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 16:19:27,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 16:19:27,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2019-12-07 16:19:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 16:19:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2019-12-07 16:19:27,510 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 46 transitions. Word has length 10 [2019-12-07 16:19:27,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:19:27,510 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 46 transitions. [2019-12-07 16:19:27,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:19:27,510 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 46 transitions. [2019-12-07 16:19:27,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 16:19:27,511 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:19:27,511 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:19:27,511 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:19:27,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:19:27,511 INFO L82 PathProgramCache]: Analyzing trace with hash -525836137, now seen corresponding path program 1 times [2019-12-07 16:19:27,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:19:27,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229484230] [2019-12-07 16:19:27,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:19:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:19:27,547 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 16:19:27,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229484230] [2019-12-07 16:19:27,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:19:27,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:19:27,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331673481] [2019-12-07 16:19:27,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:19:27,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:19:27,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:19:27,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:19:27,549 INFO L87 Difference]: Start difference. First operand 28 states and 46 transitions. Second operand 4 states. [2019-12-07 16:19:27,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:19:27,565 INFO L93 Difference]: Finished difference Result 34 states and 52 transitions. [2019-12-07 16:19:27,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:19:27,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 16:19:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:19:27,566 INFO L225 Difference]: With dead ends: 34 [2019-12-07 16:19:27,566 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 16:19:27,566 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 16:19:27,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 16:19:27,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-07 16:19:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 16:19:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2019-12-07 16:19:27,568 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 11 [2019-12-07 16:19:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:19:27,568 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2019-12-07 16:19:27,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:19:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2019-12-07 16:19:27,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 16:19:27,568 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:19:27,568 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:19:27,569 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:19:27,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:19:27,569 INFO L82 PathProgramCache]: Analyzing trace with hash -577609367, now seen corresponding path program 2 times [2019-12-07 16:19:27,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:19:27,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818991931] [2019-12-07 16:19:27,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:19:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:19:27,615 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 16:19:27,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818991931] [2019-12-07 16:19:27,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:19:27,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:19:27,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055750677] [2019-12-07 16:19:27,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 16:19:27,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:19:27,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:19:27,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:19:27,617 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand 5 states. [2019-12-07 16:19:27,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:19:27,628 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-12-07 16:19:27,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:19:27,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 16:19:27,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:19:27,628 INFO L225 Difference]: With dead ends: 21 [2019-12-07 16:19:27,628 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 16:19:27,628 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 16:19:27,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 16:19:27,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 16:19:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 16:19:27,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 16:19:27,629 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 16:19:27,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:19:27,629 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:19:27,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 16:19:27,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 16:19:27,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 16:19:27,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:19:27 BasicIcfg [2019-12-07 16:19:27,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:19:27,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:19:27,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:19:27,632 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:19:27,632 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:19:25" (3/4) ... [2019-12-07 16:19:27,635 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 16:19:27,639 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 16:19:27,639 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 16:19:27,640 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 16:19:27,642 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 16:19:27,643 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 16:19:27,643 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 16:19:27,672 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_14ab70f0-91c1-4204-b9fa-690b3798f269/bin/uautomizer/witness.graphml [2019-12-07 16:19:27,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:19:27,674 INFO L168 Benchmark]: Toolchain (without parser) took 2354.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 939.4 MB in the beginning and 1.0 GB in the end (delta: -81.7 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:19:27,674 INFO L168 Benchmark]: CDTParser took 0.18 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 16:19:27,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -134.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:19:27,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.78 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 16:19:27,675 INFO L168 Benchmark]: Boogie Preprocessor took 18.35 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 16:19:27,675 INFO L168 Benchmark]: RCFGBuilder took 224.49 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-12-07 16:19:27,676 INFO L168 Benchmark]: TraceAbstraction took 1692.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:19:27,676 INFO L168 Benchmark]: Witness Printer took 40.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:19:27,678 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 343.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -134.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.78 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 18.35 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 224.49 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1692.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * Witness Printer took 40.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 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: 61 SDtfs, 61 SDslu, 48 SDs, 0 SdLazy, 42 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 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, 15 StatesRemovedByMinimization, 3 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, 2746 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...