./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe000_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_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/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 2b31afe6a0b1e539547810c10c92ccc7a6b9358f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 18:21:07,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:21:07,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:21:07,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:21:07,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:21:07,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:21:07,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:21:07,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:21:07,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:21:07,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:21:07,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:21:07,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:21:07,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:21:07,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:21:07,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:21:07,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:21:07,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:21:07,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:21:07,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:21:07,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:21:07,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:21:07,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:21:07,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:21:07,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:21:07,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:21:07,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:21:07,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:21:07,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:21:07,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:21:07,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:21:07,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:21:07,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:21:07,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:21:07,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:21:07,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:21:07,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:21:07,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:21:07,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:21:07,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:21:07,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:21:07,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:21:07,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:21:07,827 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:21:07,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:21:07,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:21:07,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:21:07,828 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:21:07,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:21:07,828 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:21:07,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:21:07,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:21:07,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:21:07,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:21:07,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:21:07,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:21:07,829 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:21:07,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:21:07,830 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:21:07,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:21:07,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:21:07,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:21:07,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:21:07,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:21:07,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:21:07,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:21:07,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:21:07,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:21:07,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:21:07,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:21:07,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:21:07,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:21:07,832 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_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/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 -> 2b31afe6a0b1e539547810c10c92ccc7a6b9358f [2019-12-07 18:21:07,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:21:07,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:21:07,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:21:07,954 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:21:07,955 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:21:07,955 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i [2019-12-07 18:21:07,996 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/bin/uautomizer/data/2998b338f/4df5b799908a4ac6bd7671375cfdefbd/FLAG19f119fdc [2019-12-07 18:21:08,439 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:21:08,440 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i [2019-12-07 18:21:08,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/bin/uautomizer/data/2998b338f/4df5b799908a4ac6bd7671375cfdefbd/FLAG19f119fdc [2019-12-07 18:21:08,463 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/bin/uautomizer/data/2998b338f/4df5b799908a4ac6bd7671375cfdefbd [2019-12-07 18:21:08,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:21:08,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:21:08,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:21:08,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:21:08,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:21:08,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:21:08" (1/1) ... [2019-12-07 18:21:08,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b06cb05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08, skipping insertion in model container [2019-12-07 18:21:08,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:21:08" (1/1) ... [2019-12-07 18:21:08,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:21:08,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:21:08,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:21:08,765 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:21:08,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:21:08,854 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:21:08,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08 WrapperNode [2019-12-07 18:21:08,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:21:08,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:21:08,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:21:08,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:21:08,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08" (1/1) ... [2019-12-07 18:21:08,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08" (1/1) ... [2019-12-07 18:21:08,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:21:08,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:21:08,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:21:08,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:21:08,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08" (1/1) ... [2019-12-07 18:21:08,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08" (1/1) ... [2019-12-07 18:21:08,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08" (1/1) ... [2019-12-07 18:21:08,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08" (1/1) ... [2019-12-07 18:21:08,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08" (1/1) ... [2019-12-07 18:21:08,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08" (1/1) ... [2019-12-07 18:21:08,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08" (1/1) ... [2019-12-07 18:21:08,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:21:08,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:21:08,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:21:08,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:21:08,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/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 18:21:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:21:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 18:21:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:21:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:21:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 18:21:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 18:21:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 18:21:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 18:21:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 18:21:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 18:21:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 18:21:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:21:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:21:08,971 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 18:21:09,156 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:21:09,156 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 18:21:09,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:21:09 BoogieIcfgContainer [2019-12-07 18:21:09,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:21:09,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:21:09,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:21:09,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:21:09,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:21:08" (1/3) ... [2019-12-07 18:21:09,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10774395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:21:09, skipping insertion in model container [2019-12-07 18:21:09,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:08" (2/3) ... [2019-12-07 18:21:09,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10774395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:21:09, skipping insertion in model container [2019-12-07 18:21:09,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:21:09" (3/3) ... [2019-12-07 18:21:09,162 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2019-12-07 18:21:09,168 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 18:21:09,169 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:21:09,174 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:21:09,174 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 18:21:09,195 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,196 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,196 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,196 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,196 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,196 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,196 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,197 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,197 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,197 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,197 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,197 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,197 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,198 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,198 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,198 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,198 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,198 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:21:09,216 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 18:21:09,229 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:21:09,229 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:21:09,229 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:21:09,229 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:21:09,230 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:21:09,230 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:21:09,230 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:21:09,230 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:21:09,238 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-07 18:21:09,239 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 18:21:09,267 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 18:21:09,268 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:21:09,272 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 18:21:09,275 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 18:21:09,288 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 18:21:09,288 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:21:09,289 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 18:21:09,291 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 18:21:09,292 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 18:21:10,024 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-12-07 18:21:10,139 INFO L206 etLargeBlockEncoding]: Checked pairs total: 478 [2019-12-07 18:21:10,139 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-07 18:21:10,142 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-07 18:21:10,150 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-07 18:21:10,151 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-07 18:21:10,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 18:21:10,156 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:21:10,156 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:21:10,156 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:21:10,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:10,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1804038140, now seen corresponding path program 1 times [2019-12-07 18:21:10,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:10,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659777963] [2019-12-07 18:21:10,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:10,346 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 18:21:10,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659777963] [2019-12-07 18:21:10,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:21:10,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:21:10,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167450908] [2019-12-07 18:21:10,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:21:10,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:21:10,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:21:10,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:21:10,362 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-07 18:21:10,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:21:10,412 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-07 18:21:10,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:21:10,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 18:21:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:21:10,423 INFO L225 Difference]: With dead ends: 58 [2019-12-07 18:21:10,424 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 18:21:10,425 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 18:21:10,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 18:21:10,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 18:21:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 18:21:10,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 18:21:10,448 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 18:21:10,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:21:10,449 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 18:21:10,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:21:10,449 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 18:21:10,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 18:21:10,450 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:21:10,450 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:21:10,450 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:21:10,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:10,450 INFO L82 PathProgramCache]: Analyzing trace with hash 982750768, now seen corresponding path program 1 times [2019-12-07 18:21:10,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:10,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7497229] [2019-12-07 18:21:10,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:10,520 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 18:21:10,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7497229] [2019-12-07 18:21:10,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:21:10,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:21:10,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896237004] [2019-12-07 18:21:10,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:21:10,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:21:10,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:21:10,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:21:10,522 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 4 states. [2019-12-07 18:21:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:21:10,532 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2019-12-07 18:21:10,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:21:10,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 18:21:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:21:10,533 INFO L225 Difference]: With dead ends: 39 [2019-12-07 18:21:10,533 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 18:21:10,534 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 18:21:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 18:21:10,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-12-07 18:21:10,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 18:21:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 61 transitions. [2019-12-07 18:21:10,538 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 61 transitions. Word has length 9 [2019-12-07 18:21:10,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:21:10,538 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 61 transitions. [2019-12-07 18:21:10,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:21:10,538 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 61 transitions. [2019-12-07 18:21:10,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 18:21:10,539 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:21:10,539 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:21:10,539 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:21:10,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:10,539 INFO L82 PathProgramCache]: Analyzing trace with hash 90665039, now seen corresponding path program 1 times [2019-12-07 18:21:10,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:10,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417561344] [2019-12-07 18:21:10,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:10,583 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 18:21:10,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417561344] [2019-12-07 18:21:10,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:21:10,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:21:10,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832404319] [2019-12-07 18:21:10,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:21:10,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:21:10,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:21:10,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:21:10,585 INFO L87 Difference]: Start difference. First operand 35 states and 61 transitions. Second operand 4 states. [2019-12-07 18:21:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:21:10,594 INFO L93 Difference]: Finished difference Result 38 states and 61 transitions. [2019-12-07 18:21:10,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:21:10,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 18:21:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:21:10,595 INFO L225 Difference]: With dead ends: 38 [2019-12-07 18:21:10,595 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 18:21:10,596 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 18:21:10,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 18:21:10,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-12-07 18:21:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 18:21:10,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 53 transitions. [2019-12-07 18:21:10,599 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 53 transitions. Word has length 9 [2019-12-07 18:21:10,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:21:10,599 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 53 transitions. [2019-12-07 18:21:10,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:21:10,599 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2019-12-07 18:21:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:21:10,599 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:21:10,599 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:21:10,600 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:21:10,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:10,600 INFO L82 PathProgramCache]: Analyzing trace with hash 400560283, now seen corresponding path program 1 times [2019-12-07 18:21:10,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:10,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154237836] [2019-12-07 18:21:10,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:10,641 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 18:21:10,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154237836] [2019-12-07 18:21:10,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:21:10,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:21:10,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846601753] [2019-12-07 18:21:10,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:21:10,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:21:10,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:21:10,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:21:10,642 INFO L87 Difference]: Start difference. First operand 31 states and 53 transitions. Second operand 4 states. [2019-12-07 18:21:10,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:21:10,651 INFO L93 Difference]: Finished difference Result 36 states and 59 transitions. [2019-12-07 18:21:10,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:21:10,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 18:21:10,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:21:10,652 INFO L225 Difference]: With dead ends: 36 [2019-12-07 18:21:10,652 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 18:21:10,653 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 18:21:10,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 18:21:10,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2019-12-07 18:21:10,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 18:21:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2019-12-07 18:21:10,655 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 46 transitions. Word has length 10 [2019-12-07 18:21:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:21:10,656 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 46 transitions. [2019-12-07 18:21:10,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:21:10,656 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 46 transitions. [2019-12-07 18:21:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:21:10,656 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:21:10,656 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:21:10,656 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:21:10,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:10,657 INFO L82 PathProgramCache]: Analyzing trace with hash -525836137, now seen corresponding path program 1 times [2019-12-07 18:21:10,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:10,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968454213] [2019-12-07 18:21:10,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:10,686 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 18:21:10,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968454213] [2019-12-07 18:21:10,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:21:10,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:21:10,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723328307] [2019-12-07 18:21:10,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:21:10,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:21:10,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:21:10,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:21:10,687 INFO L87 Difference]: Start difference. First operand 28 states and 46 transitions. Second operand 4 states. [2019-12-07 18:21:10,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:21:10,700 INFO L93 Difference]: Finished difference Result 34 states and 52 transitions. [2019-12-07 18:21:10,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:21:10,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 18:21:10,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:21:10,700 INFO L225 Difference]: With dead ends: 34 [2019-12-07 18:21:10,700 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 18:21:10,701 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 18:21:10,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 18:21:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-07 18:21:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 18:21:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2019-12-07 18:21:10,702 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 11 [2019-12-07 18:21:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:21:10,703 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2019-12-07 18:21:10,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:21:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2019-12-07 18:21:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:21:10,703 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:21:10,703 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:21:10,703 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:21:10,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:10,704 INFO L82 PathProgramCache]: Analyzing trace with hash -577609367, now seen corresponding path program 2 times [2019-12-07 18:21:10,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:10,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637757264] [2019-12-07 18:21:10,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:10,755 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 18:21:10,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637757264] [2019-12-07 18:21:10,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:21:10,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:21:10,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018090945] [2019-12-07 18:21:10,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:21:10,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:21:10,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:21:10,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:21:10,757 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand 5 states. [2019-12-07 18:21:10,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:21:10,765 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-12-07 18:21:10,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:21:10,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:21:10,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:21:10,766 INFO L225 Difference]: With dead ends: 21 [2019-12-07 18:21:10,766 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:21:10,766 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 18:21:10,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:21:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:21:10,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:21:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:21:10,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 18:21:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:21:10,767 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:21:10,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:21:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:21:10,767 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:21:10,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:21:10 BasicIcfg [2019-12-07 18:21:10,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:21:10,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:21:10,770 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:21:10,770 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:21:10,770 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:21:09" (3/4) ... [2019-12-07 18:21:10,772 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:21:10,777 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 18:21:10,777 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 18:21:10,777 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 18:21:10,780 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 18:21:10,780 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 18:21:10,780 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 18:21:10,813 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a568e39d-d5ba-44d6-8fc9-23de6bd326f6/bin/uautomizer/witness.graphml [2019-12-07 18:21:10,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:21:10,814 INFO L168 Benchmark]: Toolchain (without parser) took 2347.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 939.8 MB in the beginning and 1.0 GB in the end (delta: -92.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:10,815 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:21:10,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -142.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:10,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.48 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 18:21:10,816 INFO L168 Benchmark]: Boogie Preprocessor took 24.31 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 18:21:10,816 INFO L168 Benchmark]: RCFGBuilder took 238.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:10,817 INFO L168 Benchmark]: TraceAbstraction took 1611.89 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:10,817 INFO L168 Benchmark]: Witness Printer took 43.11 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:10,819 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 387.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -142.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.48 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 24.31 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 238.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1611.89 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Witness Printer took 43.11 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: 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: 1.5s, 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...