./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe011_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe011_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 111652fecc1f9904459ad425a5e9e5680d2d8f19 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:29:24,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:29:24,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:29:24,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:29:24,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:29:24,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:29:24,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:29:24,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:29:24,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:29:24,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:29:24,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:29:24,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:29:24,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:29:24,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:29:24,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:29:24,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:29:24,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:29:24,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:29:24,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:29:24,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:29:24,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:29:24,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:29:24,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:29:24,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:29:24,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:29:24,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:29:24,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:29:24,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:29:24,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:29:24,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:29:24,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:29:24,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:29:24,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:29:24,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:29:24,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:29:24,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:29:24,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:29:24,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:29:24,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:29:24,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:29:24,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:29:24,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:29:25,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:29:25,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:29:25,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:29:25,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:29:25,022 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:29:25,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:29:25,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:29:25,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:29:25,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:29:25,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:29:25,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:29:25,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:29:25,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:29:25,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:29:25,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:29:25,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:29:25,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:29:25,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:29:25,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:29:25,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:29:25,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:29:25,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:29:25,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:29:25,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:29:25,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:29:25,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:29:25,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:29:25,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:29:25,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:29:25,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 111652fecc1f9904459ad425a5e9e5680d2d8f19 [2020-11-30 00:29:25,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:29:25,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:29:25,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:29:25,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:29:25,320 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:29:25,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe011_tso.oepc.i [2020-11-30 00:29:25,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer/data/09ab1bbed/abd3c96148be4c019f5f4474e8832532/FLAG4543e6212 [2020-11-30 00:29:25,954 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:29:25,954 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/sv-benchmarks/c/pthread-wmm/safe011_tso.oepc.i [2020-11-30 00:29:25,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer/data/09ab1bbed/abd3c96148be4c019f5f4474e8832532/FLAG4543e6212 [2020-11-30 00:29:26,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer/data/09ab1bbed/abd3c96148be4c019f5f4474e8832532 [2020-11-30 00:29:26,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:29:26,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:29:26,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:29:26,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:29:26,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:29:26,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:29:26" (1/1) ... [2020-11-30 00:29:26,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28929a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26, skipping insertion in model container [2020-11-30 00:29:26,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:29:26" (1/1) ... [2020-11-30 00:29:26,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:29:26,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:29:26,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:29:26,727 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:29:26,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:29:26,867 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:29:26,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26 WrapperNode [2020-11-30 00:29:26,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:29:26,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:29:26,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:29:26,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:29:26,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26" (1/1) ... [2020-11-30 00:29:26,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26" (1/1) ... [2020-11-30 00:29:26,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:29:26,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:29:26,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:29:26,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:29:26,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26" (1/1) ... [2020-11-30 00:29:26,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26" (1/1) ... [2020-11-30 00:29:26,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26" (1/1) ... [2020-11-30 00:29:26,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26" (1/1) ... [2020-11-30 00:29:26,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26" (1/1) ... [2020-11-30 00:29:26,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26" (1/1) ... [2020-11-30 00:29:26,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26" (1/1) ... [2020-11-30 00:29:26,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:29:26,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:29:26,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:29:26,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:29:27,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/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 [2020-11-30 00:29:27,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:29:27,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-30 00:29:27,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:29:27,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:29:27,088 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-30 00:29:27,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-30 00:29:27,088 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-30 00:29:27,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-30 00:29:27,088 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-30 00:29:27,089 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-30 00:29:27,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:29:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-30 00:29:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:29:27,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:29:27,091 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 00:29:27,506 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:29:27,507 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 00:29:27,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:29:27 BoogieIcfgContainer [2020-11-30 00:29:27,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:29:27,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:29:27,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:29:27,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:29:27,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:29:26" (1/3) ... [2020-11-30 00:29:27,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528c4337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:29:27, skipping insertion in model container [2020-11-30 00:29:27,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:26" (2/3) ... [2020-11-30 00:29:27,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528c4337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:29:27, skipping insertion in model container [2020-11-30 00:29:27,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:29:27" (3/3) ... [2020-11-30 00:29:27,517 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-11-30 00:29:27,528 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 00:29:27,528 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:29:27,533 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:29:27,534 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 00:29:27,558 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,559 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,559 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,561 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,561 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,562 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,562 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,565 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,565 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,569 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,570 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,576 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,576 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:29:27,578 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-30 00:29:27,593 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 00:29:27,629 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:29:27,631 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:29:27,631 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:29:27,631 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:29:27,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:29:27,632 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:29:27,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:29:27,632 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:29:27,648 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 00:29:27,650 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-30 00:29:27,653 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-30 00:29:27,655 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-30 00:29:27,714 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-30 00:29:27,714 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-30 00:29:27,718 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-30 00:29:27,721 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-30 00:29:30,123 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-30 00:29:30,405 INFO L131 LiptonReduction]: Checked pairs total: 3321 [2020-11-30 00:29:30,406 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-30 00:29:30,410 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-30 00:29:30,434 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-30 00:29:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-30 00:29:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:29:30,443 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:29:30,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:29:30,444 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:29:30,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:30,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1248499387, now seen corresponding path program 1 times [2020-11-30 00:29:30,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:30,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235572254] [2020-11-30 00:29:30,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:29:30,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235572254] [2020-11-30 00:29:30,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:29:30,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 00:29:30,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079374644] [2020-11-30 00:29:30,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:29:30,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:29:30,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:29:30,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:29:30,710 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-30 00:29:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:29:30,758 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-30 00:29:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:29:30,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-30 00:29:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:29:30,778 INFO L225 Difference]: With dead ends: 282 [2020-11-30 00:29:30,779 INFO L226 Difference]: Without dead ends: 218 [2020-11-30 00:29:30,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:29:30,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-30 00:29:30,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-30 00:29:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-30 00:29:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-30 00:29:30,842 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-30 00:29:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:29:30,843 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-30 00:29:30,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:29:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-30 00:29:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:29:30,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:29:30,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:29:30,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:29:30,845 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:29:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:30,846 INFO L82 PathProgramCache]: Analyzing trace with hash 48774317, now seen corresponding path program 1 times [2020-11-30 00:29:30,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:30,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423179505] [2020-11-30 00:29:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:29:30,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423179505] [2020-11-30 00:29:30,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:29:30,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:29:30,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755233260] [2020-11-30 00:29:30,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:29:30,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:29:30,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:29:30,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:29:30,938 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-30 00:29:31,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:29:31,008 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-30 00:29:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:29:31,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 00:29:31,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:29:31,018 INFO L225 Difference]: With dead ends: 242 [2020-11-30 00:29:31,019 INFO L226 Difference]: Without dead ends: 146 [2020-11-30 00:29:31,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:29:31,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-30 00:29:31,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-30 00:29:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-30 00:29:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-30 00:29:31,042 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-11-30 00:29:31,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:29:31,043 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-30 00:29:31,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:29:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-30 00:29:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:29:31,052 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:29:31,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:29:31,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:29:31,052 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:29:31,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:31,053 INFO L82 PathProgramCache]: Analyzing trace with hash -604430829, now seen corresponding path program 1 times [2020-11-30 00:29:31,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:31,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389394958] [2020-11-30 00:29:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:29:31,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389394958] [2020-11-30 00:29:31,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:29:31,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 00:29:31,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145340016] [2020-11-30 00:29:31,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:29:31,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:29:31,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:29:31,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:29:31,148 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-30 00:29:31,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:29:31,162 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-11-30 00:29:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:29:31,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-30 00:29:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:29:31,168 INFO L225 Difference]: With dead ends: 144 [2020-11-30 00:29:31,168 INFO L226 Difference]: Without dead ends: 144 [2020-11-30 00:29:31,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:29:31,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-30 00:29:31,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-30 00:29:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-30 00:29:31,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-11-30 00:29:31,194 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-11-30 00:29:31,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:29:31,195 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-11-30 00:29:31,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:29:31,195 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-11-30 00:29:31,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:29:31,198 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:29:31,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:29:31,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:29:31,199 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:29:31,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:31,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1306895020, now seen corresponding path program 1 times [2020-11-30 00:29:31,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:31,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213920122] [2020-11-30 00:29:31,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:29:31,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213920122] [2020-11-30 00:29:31,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:29:31,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:29:31,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613817971] [2020-11-30 00:29:31,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:29:31,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:29:31,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:29:31,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:29:31,313 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-11-30 00:29:31,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:29:31,366 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-11-30 00:29:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:29:31,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 00:29:31,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:29:31,370 INFO L225 Difference]: With dead ends: 164 [2020-11-30 00:29:31,370 INFO L226 Difference]: Without dead ends: 124 [2020-11-30 00:29:31,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:29:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-30 00:29:31,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-11-30 00:29:31,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-30 00:29:31,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-11-30 00:29:31,385 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-11-30 00:29:31,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:29:31,385 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-11-30 00:29:31,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:29:31,385 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-11-30 00:29:31,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:29:31,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:29:31,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:29:31,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:29:31,387 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:29:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:31,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1812224197, now seen corresponding path program 1 times [2020-11-30 00:29:31,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:31,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999986900] [2020-11-30 00:29:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:29:31,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999986900] [2020-11-30 00:29:31,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:29:31,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:29:31,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133266584] [2020-11-30 00:29:31,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:29:31,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:29:31,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:29:31,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:29:31,462 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-11-30 00:29:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:29:31,525 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-11-30 00:29:31,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:29:31,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-30 00:29:31,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:29:31,528 INFO L225 Difference]: With dead ends: 122 [2020-11-30 00:29:31,528 INFO L226 Difference]: Without dead ends: 97 [2020-11-30 00:29:31,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:29:31,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-30 00:29:31,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-30 00:29:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-30 00:29:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-11-30 00:29:31,543 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-11-30 00:29:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:29:31,544 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-11-30 00:29:31,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:29:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-11-30 00:29:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:29:31,545 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:29:31,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:29:31,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:29:31,545 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:29:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:31,546 INFO L82 PathProgramCache]: Analyzing trace with hash 111718158, now seen corresponding path program 1 times [2020-11-30 00:29:31,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:31,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934965662] [2020-11-30 00:29:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:29:31,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934965662] [2020-11-30 00:29:31,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:29:31,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:29:31,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776611418] [2020-11-30 00:29:31,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:29:31,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:29:31,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:29:31,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:29:31,606 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-11-30 00:29:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:29:31,619 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-11-30 00:29:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:29:31,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-30 00:29:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:29:31,621 INFO L225 Difference]: With dead ends: 115 [2020-11-30 00:29:31,621 INFO L226 Difference]: Without dead ends: 98 [2020-11-30 00:29:31,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:29:31,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-30 00:29:31,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-11-30 00:29:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-30 00:29:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-11-30 00:29:31,626 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-11-30 00:29:31,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:29:31,627 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-11-30 00:29:31,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:29:31,627 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-11-30 00:29:31,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:29:31,628 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:29:31,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:29:31,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:29:31,629 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:29:31,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:31,630 INFO L82 PathProgramCache]: Analyzing trace with hash 567564355, now seen corresponding path program 1 times [2020-11-30 00:29:31,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:31,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167711079] [2020-11-30 00:29:31,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:29:31,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167711079] [2020-11-30 00:29:31,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:29:31,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:29:31,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221354963] [2020-11-30 00:29:31,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:29:31,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:29:31,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:29:31,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:29:31,736 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-11-30 00:29:31,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:29:31,810 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-11-30 00:29:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:29:31,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-30 00:29:31,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:29:31,811 INFO L225 Difference]: With dead ends: 92 [2020-11-30 00:29:31,811 INFO L226 Difference]: Without dead ends: 36 [2020-11-30 00:29:31,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:29:31,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-30 00:29:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-30 00:29:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 00:29:31,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-30 00:29:31,814 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-11-30 00:29:31,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:29:31,814 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-30 00:29:31,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:29:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-30 00:29:31,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:29:31,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:29:31,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:29:31,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:29:31,815 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:29:31,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:31,816 INFO L82 PathProgramCache]: Analyzing trace with hash -170339707, now seen corresponding path program 1 times [2020-11-30 00:29:31,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:31,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818508845] [2020-11-30 00:29:31,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:29:31,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818508845] [2020-11-30 00:29:31,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:29:31,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:29:31,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841724792] [2020-11-30 00:29:31,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:29:31,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:29:31,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:29:31,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:29:31,884 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-11-30 00:29:31,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:29:31,891 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-30 00:29:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:29:31,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 00:29:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:29:31,892 INFO L225 Difference]: With dead ends: 35 [2020-11-30 00:29:31,892 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:29:31,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:29:31,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:29:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:29:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:29:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:29:31,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-30 00:29:31,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:29:31,894 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:29:31,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:29:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:29:31,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:29:31,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:29:31,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:29:31 BasicIcfg [2020-11-30 00:29:31,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:29:31,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:29:31,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:29:31,898 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:29:31,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:29:27" (3/4) ... [2020-11-30 00:29:31,907 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:29:31,913 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-30 00:29:31,913 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-30 00:29:31,913 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-30 00:29:31,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 00:29:31,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:29:31,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:29:31,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:29:31,981 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9036f986-8916-414f-8632-34380d84c161/bin/uautomizer/witness.graphml [2020-11-30 00:29:31,982 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:29:31,983 INFO L168 Benchmark]: Toolchain (without parser) took 5748.15 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 62.9 MB in the beginning and 45.6 MB in the end (delta: 17.3 MB). Peak memory consumption was 61.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:29:31,984 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 72.6 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:29:31,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.76 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 54.4 MB in the end (delta: 8.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:29:31,984 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.71 ms. Allocated memory is still 98.6 MB. Free memory was 53.9 MB in the beginning and 52.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:29:31,985 INFO L168 Benchmark]: Boogie Preprocessor took 46.24 ms. Allocated memory is still 98.6 MB. Free memory was 52.4 MB in the beginning and 51.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:29:31,985 INFO L168 Benchmark]: RCFGBuilder took 515.94 ms. Allocated memory is still 98.6 MB. Free memory was 51.0 MB in the beginning and 67.1 MB in the end (delta: -16.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:29:31,986 INFO L168 Benchmark]: TraceAbstraction took 4386.74 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 66.4 MB in the beginning and 47.7 MB in the end (delta: 18.7 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:29:31,986 INFO L168 Benchmark]: Witness Printer took 84.31 ms. Allocated memory is still 144.7 MB. Free memory was 47.7 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:29:31,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 72.6 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 629.76 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 54.4 MB in the end (delta: 8.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.71 ms. Allocated memory is still 98.6 MB. Free memory was 53.9 MB in the beginning and 52.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.24 ms. Allocated memory is still 98.6 MB. Free memory was 52.4 MB in the beginning and 51.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 515.94 ms. Allocated memory is still 98.6 MB. Free memory was 51.0 MB in the beginning and 67.1 MB in the end (delta: -16.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4386.74 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 66.4 MB in the beginning and 47.7 MB in the end (delta: 18.7 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. * Witness Printer took 84.31 ms. Allocated memory is still 144.7 MB. Free memory was 47.7 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 988 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3321 MoverChecksTotal - PositiveResult [Line: 17]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 144 SDtfs, 121 SDslu, 167 SDs, 0 SdLazy, 96 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 2883 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...