./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_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_029a5e80-283b-4e68-b13c-898d7bdfc6e7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/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 882ea361b7af061cd8d42e5cfb7b075ce7064afa ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:07:54,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:07:54,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:07:54,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:07:54,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:07:54,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:07:54,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:07:54,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:07:54,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:07:54,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:07:54,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:07:54,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:07:54,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:07:54,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:07:54,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:07:54,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:07:54,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:07:54,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:07:54,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:07:54,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:07:54,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:07:54,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:07:54,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:07:54,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:07:54,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:07:54,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:07:54,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:07:54,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:07:54,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:07:54,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:07:54,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:07:54,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:07:54,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:07:54,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:07:55,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:07:55,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:07:55,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:07:55,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:07:55,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:07:55,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:07:55,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:07:55,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:07:55,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:07:55,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:07:55,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:07:55,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:07:55,053 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:07:55,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:07:55,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:07:55,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:07:55,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:07:55,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:07:55,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:07:55,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:07:55,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:07:55,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:07:55,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:07:55,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:07:55,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:07:55,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:07:55,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:07:55,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:07:55,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:07:55,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:07:55,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:07:55,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:07:55,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:07:55,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:07:55,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:07:55,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:07:55,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:07:55,059 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_029a5e80-283b-4e68-b13c-898d7bdfc6e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 882ea361b7af061cd8d42e5cfb7b075ce7064afa [2020-11-28 03:07:55,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:07:55,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:07:55,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:07:55,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:07:55,378 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:07:55,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i [2020-11-28 03:07:55,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/bin/uautomizer/data/7a5a50557/bb35203f6c6c4d23852be6d5511e83c6/FLAG38de41cdc [2020-11-28 03:07:56,019 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:07:56,020 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i [2020-11-28 03:07:56,032 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/bin/uautomizer/data/7a5a50557/bb35203f6c6c4d23852be6d5511e83c6/FLAG38de41cdc [2020-11-28 03:07:56,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/bin/uautomizer/data/7a5a50557/bb35203f6c6c4d23852be6d5511e83c6 [2020-11-28 03:07:56,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:07:56,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:07:56,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:56,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:07:56,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:07:56,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:56" (1/1) ... [2020-11-28 03:07:56,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a4edd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56, skipping insertion in model container [2020-11-28 03:07:56,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:56" (1/1) ... [2020-11-28 03:07:56,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:07:56,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:07:56,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:56,714 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:07:56,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:56,824 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:07:56,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56 WrapperNode [2020-11-28 03:07:56,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:56,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:56,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:07:56,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:07:56,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56" (1/1) ... [2020-11-28 03:07:56,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56" (1/1) ... [2020-11-28 03:07:56,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:56,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:07:56,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:07:56,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:07:56,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56" (1/1) ... [2020-11-28 03:07:56,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56" (1/1) ... [2020-11-28 03:07:56,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56" (1/1) ... [2020-11-28 03:07:56,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56" (1/1) ... [2020-11-28 03:07:56,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56" (1/1) ... [2020-11-28 03:07:56,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56" (1/1) ... [2020-11-28 03:07:56,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56" (1/1) ... [2020-11-28 03:07:56,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:07:56,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:07:56,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:07:56,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:07:56,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/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 [2020-11-28 03:07:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:07:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:07:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:07:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:07:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:07:56,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:07:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:07:56,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:07:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 03:07:56,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 03:07:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:07:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:07:56,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:07:56,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:07:56,979 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 03:07:57,415 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:07:57,415 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:07:57,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:57 BoogieIcfgContainer [2020-11-28 03:07:57,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:07:57,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:07:57,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:07:57,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:07:57,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:07:56" (1/3) ... [2020-11-28 03:07:57,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4dcced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:57, skipping insertion in model container [2020-11-28 03:07:57,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:56" (2/3) ... [2020-11-28 03:07:57,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4dcced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:57, skipping insertion in model container [2020-11-28 03:07:57,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:57" (3/3) ... [2020-11-28 03:07:57,431 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2020-11-28 03:07:57,447 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:07:57,447 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:07:57,452 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:07:57,453 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:07:57,485 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,486 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,486 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,486 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,487 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,487 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,488 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,488 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,488 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,489 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,489 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,489 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,489 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,490 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,490 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,490 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,490 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,493 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,493 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,493 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,494 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,498 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,498 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,501 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,501 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:57,509 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:07:57,520 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:07:57,541 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:07:57,541 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:07:57,542 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:07:57,542 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:07:57,542 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:07:57,542 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:07:57,542 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:07:57,542 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:07:57,554 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:07:57,556 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:07:57,559 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:07:57,561 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 03:07:57,602 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 03:07:57,602 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:07:57,606 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 03:07:57,609 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 03:07:59,845 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-28 03:07:59,942 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-28 03:07:59,942 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-28 03:07:59,947 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 03:07:59,976 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 03:07:59,978 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 03:07:59,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:07:59,985 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:59,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:59,985 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:59,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:59,991 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-28 03:07:59,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:00,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301556066] [2020-11-28 03:08:00,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:00,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:00,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301556066] [2020-11-28 03:08:00,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:00,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:08:00,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661581449] [2020-11-28 03:08:00,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:08:00,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:00,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:08:00,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:08:00,173 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 03:08:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:00,203 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 03:08:00,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:08:00,204 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:08:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:00,219 INFO L225 Difference]: With dead ends: 362 [2020-11-28 03:08:00,219 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 03:08:00,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:08:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 03:08:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 03:08:00,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 03:08:00,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 03:08:00,294 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 03:08:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:00,296 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 03:08:00,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:08:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 03:08:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:08:00,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:00,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:00,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:08:00,298 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:00,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-28 03:08:00,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:00,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155102274] [2020-11-28 03:08:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:00,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155102274] [2020-11-28 03:08:00,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:00,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:08:00,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216107385] [2020-11-28 03:08:00,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:08:00,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:00,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:08:00,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:08:00,476 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-11-28 03:08:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:00,571 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-28 03:08:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:08:00,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 03:08:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:00,581 INFO L225 Difference]: With dead ends: 330 [2020-11-28 03:08:00,581 INFO L226 Difference]: Without dead ends: 266 [2020-11-28 03:08:00,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:08:00,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-28 03:08:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-28 03:08:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-28 03:08:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-28 03:08:00,622 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-28 03:08:00,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:00,623 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-28 03:08:00,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:08:00,623 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-28 03:08:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:08:00,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:00,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:00,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:08:00,628 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:00,628 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-11-28 03:08:00,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:00,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019979791] [2020-11-28 03:08:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:00,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:00,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019979791] [2020-11-28 03:08:00,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:00,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:08:00,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343196448] [2020-11-28 03:08:00,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:08:00,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:00,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:08:00,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:08:00,778 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-11-28 03:08:00,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:00,907 INFO L93 Difference]: Finished difference Result 338 states and 914 transitions. [2020-11-28 03:08:00,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:08:00,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 03:08:00,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:00,910 INFO L225 Difference]: With dead ends: 338 [2020-11-28 03:08:00,910 INFO L226 Difference]: Without dead ends: 194 [2020-11-28 03:08:00,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:08:00,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-28 03:08:00,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-28 03:08:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-28 03:08:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 494 transitions. [2020-11-28 03:08:00,929 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 494 transitions. Word has length 10 [2020-11-28 03:08:00,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:00,929 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 494 transitions. [2020-11-28 03:08:00,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:08:00,929 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 494 transitions. [2020-11-28 03:08:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:08:00,935 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:00,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:00,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:08:00,937 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:00,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:00,939 INFO L82 PathProgramCache]: Analyzing trace with hash 150494398, now seen corresponding path program 1 times [2020-11-28 03:08:00,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:00,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329610590] [2020-11-28 03:08:00,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:01,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329610590] [2020-11-28 03:08:01,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:01,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:08:01,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896538546] [2020-11-28 03:08:01,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:08:01,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:01,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:08:01,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:08:01,064 INFO L87 Difference]: Start difference. First operand 194 states and 494 transitions. Second operand 4 states. [2020-11-28 03:08:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:01,085 INFO L93 Difference]: Finished difference Result 206 states and 508 transitions. [2020-11-28 03:08:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:08:01,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:08:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:01,088 INFO L225 Difference]: With dead ends: 206 [2020-11-28 03:08:01,088 INFO L226 Difference]: Without dead ends: 182 [2020-11-28 03:08:01,088 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 [2020-11-28 03:08:01,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-28 03:08:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-11-28 03:08:01,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-28 03:08:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 456 transitions. [2020-11-28 03:08:01,097 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 456 transitions. Word has length 12 [2020-11-28 03:08:01,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:01,097 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 456 transitions. [2020-11-28 03:08:01,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:08:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 456 transitions. [2020-11-28 03:08:01,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:08:01,098 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:01,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:01,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:08:01,099 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:01,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:01,099 INFO L82 PathProgramCache]: Analyzing trace with hash -10402391, now seen corresponding path program 1 times [2020-11-28 03:08:01,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:01,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837752372] [2020-11-28 03:08:01,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:01,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837752372] [2020-11-28 03:08:01,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:01,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:08:01,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441113000] [2020-11-28 03:08:01,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:08:01,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:01,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:08:01,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:08:01,181 INFO L87 Difference]: Start difference. First operand 182 states and 456 transitions. Second operand 5 states. [2020-11-28 03:08:01,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:01,270 INFO L93 Difference]: Finished difference Result 194 states and 473 transitions. [2020-11-28 03:08:01,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:08:01,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:08:01,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:01,276 INFO L225 Difference]: With dead ends: 194 [2020-11-28 03:08:01,277 INFO L226 Difference]: Without dead ends: 158 [2020-11-28 03:08:01,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:08:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-28 03:08:01,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-11-28 03:08:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-28 03:08:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 394 transitions. [2020-11-28 03:08:01,286 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 394 transitions. Word has length 13 [2020-11-28 03:08:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:01,287 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 394 transitions. [2020-11-28 03:08:01,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:08:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 394 transitions. [2020-11-28 03:08:01,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:08:01,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:01,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:01,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:08:01,289 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:01,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1736979236, now seen corresponding path program 1 times [2020-11-28 03:08:01,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:01,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633401708] [2020-11-28 03:08:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:01,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633401708] [2020-11-28 03:08:01,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:01,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:08:01,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716425394] [2020-11-28 03:08:01,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:08:01,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:01,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:08:01,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:08:01,367 INFO L87 Difference]: Start difference. First operand 158 states and 394 transitions. Second operand 5 states. [2020-11-28 03:08:01,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:01,428 INFO L93 Difference]: Finished difference Result 236 states and 587 transitions. [2020-11-28 03:08:01,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:08:01,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:08:01,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:01,430 INFO L225 Difference]: With dead ends: 236 [2020-11-28 03:08:01,430 INFO L226 Difference]: Without dead ends: 128 [2020-11-28 03:08:01,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:08:01,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-28 03:08:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-28 03:08:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 03:08:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-11-28 03:08:01,436 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-11-28 03:08:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:01,437 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-11-28 03:08:01,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:08:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-11-28 03:08:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:08:01,438 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:01,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:01,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:08:01,439 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:01,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:01,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1184784502, now seen corresponding path program 2 times [2020-11-28 03:08:01,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:01,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511164123] [2020-11-28 03:08:01,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:01,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511164123] [2020-11-28 03:08:01,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:01,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:08:01,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165123806] [2020-11-28 03:08:01,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:08:01,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:01,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:08:01,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:08:01,521 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 5 states. [2020-11-28 03:08:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:01,577 INFO L93 Difference]: Finished difference Result 158 states and 381 transitions. [2020-11-28 03:08:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:08:01,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:08:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:01,578 INFO L225 Difference]: With dead ends: 158 [2020-11-28 03:08:01,578 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 03:08:01,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:08:01,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 03:08:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-11-28 03:08:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-28 03:08:01,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-11-28 03:08:01,582 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 13 [2020-11-28 03:08:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:01,582 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-11-28 03:08:01,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:08:01,583 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-11-28 03:08:01,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:08:01,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:01,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:01,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:08:01,584 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:01,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:01,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 1 times [2020-11-28 03:08:01,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:01,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217396664] [2020-11-28 03:08:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:01,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217396664] [2020-11-28 03:08:01,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:01,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:08:01,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950940724] [2020-11-28 03:08:01,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:08:01,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:01,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:08:01,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:08:01,657 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-11-28 03:08:01,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:01,691 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-11-28 03:08:01,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:08:01,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 03:08:01,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:01,693 INFO L225 Difference]: With dead ends: 91 [2020-11-28 03:08:01,693 INFO L226 Difference]: Without dead ends: 69 [2020-11-28 03:08:01,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:08:01,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-28 03:08:01,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-11-28 03:08:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-28 03:08:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-11-28 03:08:01,696 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-11-28 03:08:01,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:01,696 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-11-28 03:08:01,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:08:01,697 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-11-28 03:08:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:08:01,697 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:01,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:01,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:08:01,697 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:01,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:01,698 INFO L82 PathProgramCache]: Analyzing trace with hash -27259733, now seen corresponding path program 1 times [2020-11-28 03:08:01,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:01,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116183492] [2020-11-28 03:08:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:01,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116183492] [2020-11-28 03:08:01,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:01,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:08:01,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967558506] [2020-11-28 03:08:01,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:08:01,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:01,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:08:01,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:08:01,778 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-11-28 03:08:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:01,817 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-11-28 03:08:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:08:01,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 03:08:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:01,818 INFO L225 Difference]: With dead ends: 65 [2020-11-28 03:08:01,818 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 03:08:01,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:08:01,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 03:08:01,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-28 03:08:01,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 03:08:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-11-28 03:08:01,821 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-11-28 03:08:01,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:01,821 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-11-28 03:08:01,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:08:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-11-28 03:08:01,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:08:01,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:01,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:01,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:08:01,822 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:01,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:01,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-11-28 03:08:01,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:01,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943622159] [2020-11-28 03:08:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:01,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943622159] [2020-11-28 03:08:01,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:01,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:08:01,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677807782] [2020-11-28 03:08:01,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:08:01,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:01,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:08:01,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:08:01,886 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-11-28 03:08:01,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:01,949 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-11-28 03:08:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:08:01,950 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 03:08:01,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:01,950 INFO L225 Difference]: With dead ends: 43 [2020-11-28 03:08:01,950 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 03:08:01,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:08:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 03:08:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-28 03:08:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 03:08:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-11-28 03:08:01,953 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-11-28 03:08:01,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:01,953 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-11-28 03:08:01,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:08:01,953 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-11-28 03:08:01,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:08:01,953 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:08:01,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:08:01,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:08:01,954 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:08:01,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:08:01,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-11-28 03:08:01,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:08:01,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792294977] [2020-11-28 03:08:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:08:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:08:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:08:02,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792294977] [2020-11-28 03:08:02,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:08:02,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:08:02,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874774717] [2020-11-28 03:08:02,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:08:02,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:08:02,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:08:02,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:08:02,003 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-11-28 03:08:02,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:08:02,030 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-11-28 03:08:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:08:02,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:08:02,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:08:02,031 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:08:02,031 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:08:02,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:08:02,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:08:02,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:08:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:08:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:08:02,032 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 03:08:02,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:08:02,032 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:08:02,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:08:02,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:08:02,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:08:02,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:08:02,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:08:02 BasicIcfg [2020-11-28 03:08:02,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:08:02,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:08:02,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:08:02,036 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:08:02,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:57" (3/4) ... [2020-11-28 03:08:02,040 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:08:02,046 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:08:02,046 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:08:02,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 03:08:02,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 03:08:02,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:08:02,054 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:08:02,054 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:08:02,114 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_029a5e80-283b-4e68-b13c-898d7bdfc6e7/bin/uautomizer/witness.graphml [2020-11-28 03:08:02,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:08:02,119 INFO L168 Benchmark]: Toolchain (without parser) took 5835.88 ms. Allocated memory was 104.9 MB in the beginning and 157.3 MB in the end (delta: 52.4 MB). Free memory was 67.2 MB in the beginning and 52.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 65.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:02,124 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory is still 84.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:08:02,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.95 ms. Allocated memory is still 104.9 MB. Free memory was 67.0 MB in the beginning and 60.6 MB in the end (delta: 6.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:02,125 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.47 ms. Allocated memory is still 104.9 MB. Free memory was 60.6 MB in the beginning and 58.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:02,125 INFO L168 Benchmark]: Boogie Preprocessor took 26.02 ms. Allocated memory is still 104.9 MB. Free memory was 58.5 MB in the beginning and 57.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:08:02,126 INFO L168 Benchmark]: RCFGBuilder took 520.95 ms. Allocated memory is still 104.9 MB. Free memory was 56.9 MB in the beginning and 75.0 MB in the end (delta: -18.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:02,126 INFO L168 Benchmark]: TraceAbstraction took 4616.58 ms. Allocated memory was 104.9 MB in the beginning and 157.3 MB in the end (delta: 52.4 MB). Free memory was 74.4 MB in the beginning and 55.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 74.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:02,127 INFO L168 Benchmark]: Witness Printer took 81.89 ms. Allocated memory is still 157.3 MB. Free memory was 55.2 MB in the beginning and 52.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:08:02,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory is still 84.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 538.95 ms. Allocated memory is still 104.9 MB. Free memory was 67.0 MB in the beginning and 60.6 MB in the end (delta: 6.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.47 ms. Allocated memory is still 104.9 MB. Free memory was 60.6 MB in the beginning and 58.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.02 ms. Allocated memory is still 104.9 MB. Free memory was 58.5 MB in the beginning and 57.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 520.95 ms. Allocated memory is still 104.9 MB. Free memory was 56.9 MB in the beginning and 75.0 MB in the end (delta: -18.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4616.58 ms. Allocated memory was 104.9 MB in the beginning and 157.3 MB in the end (delta: 52.4 MB). Free memory was 74.4 MB in the beginning and 55.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 74.5 MB. Max. memory is 16.1 GB. * Witness Printer took 81.89 ms. Allocated memory is still 157.3 MB. Free memory was 55.2 MB in the beginning and 52.1 MB in the end (delta: 3.1 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 955 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 212 SDtfs, 291 SDslu, 345 SDs, 0 SdLazy, 169 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 4924 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...