./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.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_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/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 20b719c68feea1a9e07df2ca6fb82d473e19c0b2 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:28:37,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:28:37,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:28:37,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:28:37,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:28:37,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:28:37,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:28:37,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:28:37,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:28:37,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:28:37,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:28:37,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:28:37,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:28:37,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:28:37,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:28:37,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:28:37,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:28:37,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:28:37,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:28:37,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:28:37,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:28:37,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:28:37,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:28:37,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:28:37,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:28:37,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:28:37,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:28:37,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:28:37,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:28:37,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:28:37,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:28:37,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:28:37,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:28:37,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:28:37,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:28:37,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:28:37,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:28:37,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:28:37,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:28:37,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:28:37,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:28:37,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:28:38,023 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:28:38,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:28:38,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:28:38,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:28:38,030 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:28:38,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:28:38,031 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:28:38,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:28:38,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:28:38,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:28:38,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:28:38,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:28:38,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:28:38,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:28:38,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:28:38,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:28:38,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:28:38,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:28:38,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:28:38,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:28:38,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:28:38,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:28:38,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:28:38,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:28:38,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:28:38,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:28:38,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:28:38,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:28:38,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:28:38,037 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_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20b719c68feea1a9e07df2ca6fb82d473e19c0b2 [2020-11-29 22:28:38,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:28:38,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:28:38,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:28:38,368 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:28:38,370 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:28:38,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2020-11-29 22:28:38,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/bin/uautomizer/data/8744b3bcd/d094a4884b5e4e9ab96dbf757237a0eb/FLAG12090d417 [2020-11-29 22:28:39,103 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:28:39,106 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2020-11-29 22:28:39,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/bin/uautomizer/data/8744b3bcd/d094a4884b5e4e9ab96dbf757237a0eb/FLAG12090d417 [2020-11-29 22:28:39,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/bin/uautomizer/data/8744b3bcd/d094a4884b5e4e9ab96dbf757237a0eb [2020-11-29 22:28:39,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:28:39,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:28:39,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:28:39,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:28:39,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:28:39,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:28:39" (1/1) ... [2020-11-29 22:28:39,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d828d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39, skipping insertion in model container [2020-11-29 22:28:39,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:28:39" (1/1) ... [2020-11-29 22:28:39,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:28:39,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:28:39,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:28:39,838 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:28:39,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:28:39,951 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:28:39,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39 WrapperNode [2020-11-29 22:28:39,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:28:39,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:28:39,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:28:39,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:28:39,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39" (1/1) ... [2020-11-29 22:28:39,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39" (1/1) ... [2020-11-29 22:28:39,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:28:39,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:28:39,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:28:39,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:28:40,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39" (1/1) ... [2020-11-29 22:28:40,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39" (1/1) ... [2020-11-29 22:28:40,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39" (1/1) ... [2020-11-29 22:28:40,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39" (1/1) ... [2020-11-29 22:28:40,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39" (1/1) ... [2020-11-29 22:28:40,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39" (1/1) ... [2020-11-29 22:28:40,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39" (1/1) ... [2020-11-29 22:28:40,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:28:40,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:28:40,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:28:40,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:28:40,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/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 [2020-11-29 22:28:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:28:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 22:28:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:28:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:28:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 22:28:40,125 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 22:28:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 22:28:40,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 22:28:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 22:28:40,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 22:28:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:28:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 22:28:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:28:40,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:28:40,129 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-29 22:28:40,684 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:28:40,684 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 22:28:40,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:28:40 BoogieIcfgContainer [2020-11-29 22:28:40,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:28:40,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:28:40,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:28:40,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:28:40,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:28:39" (1/3) ... [2020-11-29 22:28:40,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a25eb91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:28:40, skipping insertion in model container [2020-11-29 22:28:40,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:28:39" (2/3) ... [2020-11-29 22:28:40,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a25eb91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:28:40, skipping insertion in model container [2020-11-29 22:28:40,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:28:40" (3/3) ... [2020-11-29 22:28:40,696 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-11-29 22:28:40,708 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 22:28:40,708 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:28:40,712 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 22:28:40,713 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 22:28:40,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,757 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,757 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,759 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,760 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,761 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,761 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,766 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,774 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,774 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,774 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,774 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,780 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,780 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 22:28:40,784 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 22:28:40,795 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 22:28:40,827 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:28:40,828 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:28:40,829 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:28:40,829 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:28:40,829 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:28:40,829 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:28:40,829 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:28:40,829 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:28:40,845 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 22:28:40,847 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-29 22:28:40,850 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-29 22:28:40,852 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-29 22:28:40,896 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-29 22:28:40,896 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 22:28:40,900 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 62 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. [2020-11-29 22:28:40,903 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-29 22:28:43,004 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-11-29 22:28:43,561 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-29 22:28:43,713 INFO L131 LiptonReduction]: Checked pairs total: 2822 [2020-11-29 22:28:43,713 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-29 22:28:43,721 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-29 22:28:43,767 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-29 22:28:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-29 22:28:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:28:43,777 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:43,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:43,778 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:28:43,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:43,784 INFO L82 PathProgramCache]: Analyzing trace with hash 406549293, now seen corresponding path program 1 times [2020-11-29 22:28:43,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:43,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206736955] [2020-11-29 22:28:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:43,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206736955] [2020-11-29 22:28:43,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:43,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:28:43,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967776497] [2020-11-29 22:28:43,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:28:43,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:43,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:28:43,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:28:43,993 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-29 22:28:44,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:44,040 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-29 22:28:44,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:28:44,041 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 22:28:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:44,068 INFO L225 Difference]: With dead ends: 362 [2020-11-29 22:28:44,069 INFO L226 Difference]: Without dead ends: 298 [2020-11-29 22:28:44,071 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 [2020-11-29 22:28:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-29 22:28:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-29 22:28:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-29 22:28:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-29 22:28:44,141 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-29 22:28:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:44,142 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-29 22:28:44,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:28:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-29 22:28:44,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:28:44,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:44,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:44,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:28:44,145 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:28:44,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:44,145 INFO L82 PathProgramCache]: Analyzing trace with hash -281880887, now seen corresponding path program 1 times [2020-11-29 22:28:44,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:44,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090426454] [2020-11-29 22:28:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:44,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090426454] [2020-11-29 22:28:44,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:44,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:28:44,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222301119] [2020-11-29 22:28:44,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 22:28:44,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:44,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:28:44,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:28:44,299 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-29 22:28:44,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:44,325 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-29 22:28:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:28:44,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 22:28:44,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:44,328 INFO L225 Difference]: With dead ends: 217 [2020-11-29 22:28:44,328 INFO L226 Difference]: Without dead ends: 217 [2020-11-29 22:28:44,329 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 [2020-11-29 22:28:44,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-29 22:28:44,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-29 22:28:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-29 22:28:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-29 22:28:44,359 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-29 22:28:44,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:44,359 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-29 22:28:44,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 22:28:44,360 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-29 22:28:44,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 22:28:44,361 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:44,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:44,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:28:44,362 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:28:44,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:44,362 INFO L82 PathProgramCache]: Analyzing trace with hash -389577111, now seen corresponding path program 1 times [2020-11-29 22:28:44,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:44,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596734185] [2020-11-29 22:28:44,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:44,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596734185] [2020-11-29 22:28:44,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:44,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:28:44,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849565531] [2020-11-29 22:28:44,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:28:44,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:44,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:28:44,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:28:44,463 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-11-29 22:28:44,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:44,497 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-29 22:28:44,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:28:44,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 22:28:44,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:44,499 INFO L225 Difference]: With dead ends: 136 [2020-11-29 22:28:44,500 INFO L226 Difference]: Without dead ends: 136 [2020-11-29 22:28:44,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:28:44,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-29 22:28:44,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-29 22:28:44,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-29 22:28:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-29 22:28:44,507 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-29 22:28:44,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:44,507 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-29 22:28:44,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:28:44,507 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-29 22:28:44,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 22:28:44,509 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:44,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:44,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:28:44,510 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:28:44,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:44,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1823296511, now seen corresponding path program 1 times [2020-11-29 22:28:44,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:44,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126456509] [2020-11-29 22:28:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:44,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126456509] [2020-11-29 22:28:44,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:44,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:28:44,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847867175] [2020-11-29 22:28:44,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:28:44,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:44,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:28:44,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:28:44,624 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-11-29 22:28:44,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:44,680 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-29 22:28:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:28:44,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 22:28:44,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:44,681 INFO L225 Difference]: With dead ends: 109 [2020-11-29 22:28:44,681 INFO L226 Difference]: Without dead ends: 109 [2020-11-29 22:28:44,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:28:44,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-29 22:28:44,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-29 22:28:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-29 22:28:44,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-29 22:28:44,685 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-29 22:28:44,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:44,685 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-29 22:28:44,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:28:44,686 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-29 22:28:44,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 22:28:44,687 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:44,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:44,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 22:28:44,687 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:28:44,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:44,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1915158341, now seen corresponding path program 1 times [2020-11-29 22:28:44,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:44,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907427720] [2020-11-29 22:28:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:44,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907427720] [2020-11-29 22:28:44,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:44,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:28:44,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780757173] [2020-11-29 22:28:44,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:28:44,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:44,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:28:44,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:28:44,828 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-29 22:28:44,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:44,871 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-11-29 22:28:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:28:44,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 22:28:44,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:44,872 INFO L225 Difference]: With dead ends: 135 [2020-11-29 22:28:44,873 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 22:28:44,873 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 [2020-11-29 22:28:44,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 22:28:44,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-29 22:28:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 22:28:44,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-11-29 22:28:44,875 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-11-29 22:28:44,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:44,875 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-11-29 22:28:44,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:28:44,875 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-11-29 22:28:44,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 22:28:44,876 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:44,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:44,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 22:28:44,876 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:28:44,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:44,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1566003365, now seen corresponding path program 2 times [2020-11-29 22:28:44,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:44,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725077602] [2020-11-29 22:28:44,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:44,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725077602] [2020-11-29 22:28:44,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:44,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:28:44,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495794574] [2020-11-29 22:28:44,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:28:44,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:44,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:28:44,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:28:44,971 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-11-29 22:28:45,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:45,028 INFO L93 Difference]: Finished difference Result 69 states and 121 transitions. [2020-11-29 22:28:45,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:28:45,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 22:28:45,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:45,029 INFO L225 Difference]: With dead ends: 69 [2020-11-29 22:28:45,029 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 22:28:45,029 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 [2020-11-29 22:28:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 22:28:45,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-29 22:28:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 22:28:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-11-29 22:28:45,031 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-11-29 22:28:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:45,031 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-11-29 22:28:45,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:28:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-11-29 22:28:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 22:28:45,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:28:45,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:28:45,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 22:28:45,033 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:28:45,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:28:45,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1541967813, now seen corresponding path program 3 times [2020-11-29 22:28:45,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:28:45,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997599055] [2020-11-29 22:28:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:28:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:28:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:28:45,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997599055] [2020-11-29 22:28:45,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:28:45,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:28:45,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792214949] [2020-11-29 22:28:45,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:28:45,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:28:45,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:28:45,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:28:45,140 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-11-29 22:28:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:28:45,171 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-11-29 22:28:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:28:45,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 22:28:45,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:28:45,172 INFO L225 Difference]: With dead ends: 30 [2020-11-29 22:28:45,172 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:28:45,172 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 [2020-11-29 22:28:45,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:28:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:28:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:28:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:28:45,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-29 22:28:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:28:45,173 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:28:45,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:28:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:28:45,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:28:45,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 22:28:45,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:28:45 BasicIcfg [2020-11-29 22:28:45,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:28:45,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:28:45,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:28:45,177 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:28:45,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:28:40" (3/4) ... [2020-11-29 22:28:45,181 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:28:45,186 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 22:28:45,186 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 22:28:45,186 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 22:28:45,191 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 22:28:45,191 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:28:45,191 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:28:45,192 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:28:45,231 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ab2fc9c2-a172-4e2b-b91c-7dc00cd17adb/bin/uautomizer/witness.graphml [2020-11-29 22:28:45,231 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:28:45,232 INFO L168 Benchmark]: Toolchain (without parser) took 5863.30 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 55.7 MB in the beginning and 91.4 MB in the end (delta: -35.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-11-29 22:28:45,233 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:28:45,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 579.36 ms. Allocated memory is still 88.1 MB. Free memory was 55.5 MB in the beginning and 45.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:28:45,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.35 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 43.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:28:45,234 INFO L168 Benchmark]: Boogie Preprocessor took 25.60 ms. Allocated memory is still 88.1 MB. Free memory was 43.3 MB in the beginning and 41.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:28:45,235 INFO L168 Benchmark]: RCFGBuilder took 664.34 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 41.9 MB in the beginning and 70.7 MB in the end (delta: -28.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:28:45,236 INFO L168 Benchmark]: TraceAbstraction took 4486.60 ms. Allocated memory was 107.0 MB in the beginning and 136.3 MB in the end (delta: 29.4 MB). Free memory was 69.9 MB in the beginning and 93.5 MB in the end (delta: -23.5 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:28:45,237 INFO L168 Benchmark]: Witness Printer took 54.09 ms. Allocated memory is still 136.3 MB. Free memory was 93.5 MB in the beginning and 91.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:28:45,244 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 88.1 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 579.36 ms. Allocated memory is still 88.1 MB. Free memory was 55.5 MB in the beginning and 45.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.35 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 43.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.60 ms. Allocated memory is still 88.1 MB. Free memory was 43.3 MB in the beginning and 41.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 664.34 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 41.9 MB in the beginning and 70.7 MB in the end (delta: -28.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4486.60 ms. Allocated memory was 107.0 MB in the beginning and 136.3 MB in the end (delta: 29.4 MB). Free memory was 69.9 MB in the beginning and 93.5 MB in the end (delta: -23.5 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Witness Printer took 54.09 ms. Allocated memory is still 136.3 MB. Free memory was 93.5 MB in the beginning and 91.4 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 1022 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2822 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: 4.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 129 SDtfs, 85 SDslu, 171 SDs, 0 SdLazy, 55 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3355 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...