./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin000_pso.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_f5ece8e6-765d-4750-af7e-f225c58004bc/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/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 4d03eab5d7eb3076e43fdbc822f0c202dd7957a2 ............................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:52:54,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:52:54,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:52:54,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:52:54,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:52:54,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:52:54,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:52:54,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:52:54,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:52:54,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:52:54,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:52:54,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:52:54,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:52:54,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:52:54,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:52:54,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:52:54,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:52:54,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:52:54,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:52:54,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:52:54,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:52:54,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:52:54,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:52:54,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:52:54,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:52:54,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:52:54,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:52:54,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:52:54,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:52:54,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:52:54,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:52:54,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:52:54,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:52:54,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:52:54,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:52:54,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:52:54,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:52:54,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:52:54,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:52:54,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:52:54,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:52:54,984 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:52:55,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:52:55,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:52:55,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:52:55,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:52:55,023 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:52:55,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:52:55,024 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:52:55,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:52:55,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:52:55,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:52:55,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:52:55,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:52:55,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:52:55,026 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:52:55,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:52:55,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:52:55,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:52:55,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:52:55,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:52:55,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:52:55,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:52:55,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:52:55,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:52:55,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:52:55,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:52:55,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:52:55,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:52:55,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:52:55,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:52:55,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d03eab5d7eb3076e43fdbc822f0c202dd7957a2 [2020-11-29 20:52:55,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:52:55,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:52:55,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:52:55,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:52:55,377 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:52:55,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i [2020-11-29 20:52:55,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/bin/uautomizer/data/a09a3a558/f6a52078619f440a8157f17634c4101f/FLAG28754ea84 [2020-11-29 20:52:56,094 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:52:56,098 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i [2020-11-29 20:52:56,131 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/bin/uautomizer/data/a09a3a558/f6a52078619f440a8157f17634c4101f/FLAG28754ea84 [2020-11-29 20:52:56,359 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/bin/uautomizer/data/a09a3a558/f6a52078619f440a8157f17634c4101f [2020-11-29 20:52:56,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:52:56,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:52:56,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:52:56,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:52:56,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:52:56,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:52:56" (1/1) ... [2020-11-29 20:52:56,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ffbc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56, skipping insertion in model container [2020-11-29 20:52:56,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:52:56" (1/1) ... [2020-11-29 20:52:56,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:52:56,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:52:56,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:52:56,817 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:52:56,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:52:56,950 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:52:56,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56 WrapperNode [2020-11-29 20:52:56,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:52:56,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:52:56,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:52:56,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:52:56,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56" (1/1) ... [2020-11-29 20:52:56,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56" (1/1) ... [2020-11-29 20:52:57,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:52:57,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:52:57,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:52:57,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:52:57,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56" (1/1) ... [2020-11-29 20:52:57,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56" (1/1) ... [2020-11-29 20:52:57,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56" (1/1) ... [2020-11-29 20:52:57,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56" (1/1) ... [2020-11-29 20:52:57,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56" (1/1) ... [2020-11-29 20:52:57,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56" (1/1) ... [2020-11-29 20:52:57,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56" (1/1) ... [2020-11-29 20:52:57,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:52:57,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:52:57,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:52:57,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:52:57,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/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 20:52:57,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:52:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 20:52:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:52:57,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:52:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 20:52:57,117 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 20:52:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 20:52:57,117 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 20:52:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:52:57,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 20:52:57,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:52:57,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:52:57,120 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 20:52:57,602 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:52:57,602 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 20:52:57,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:52:57 BoogieIcfgContainer [2020-11-29 20:52:57,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:52:57,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:52:57,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:52:57,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:52:57,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:52:56" (1/3) ... [2020-11-29 20:52:57,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8422c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:52:57, skipping insertion in model container [2020-11-29 20:52:57,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:52:56" (2/3) ... [2020-11-29 20:52:57,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8422c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:52:57, skipping insertion in model container [2020-11-29 20:52:57,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:52:57" (3/3) ... [2020-11-29 20:52:57,613 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_pso.oepc.i [2020-11-29 20:52:57,624 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 20:52:57,624 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:52:57,629 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:52:57,630 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 20:52:57,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,659 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,659 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,659 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,661 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,661 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,661 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,661 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,665 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,666 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:52:57,677 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 20:52:57,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 20:52:57,719 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:52:57,720 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:52:57,720 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:52:57,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:52:57,721 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:52:57,721 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:52:57,722 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:52:57,722 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:52:57,737 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 20:52:57,740 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-29 20:52:57,743 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-29 20:52:57,745 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-11-29 20:52:57,808 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-11-29 20:52:57,809 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 20:52:57,813 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-11-29 20:52:57,818 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-11-29 20:52:58,790 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-29 20:52:59,969 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-11-29 20:53:00,343 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-29 20:53:00,465 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-29 20:53:00,507 INFO L131 LiptonReduction]: Checked pairs total: 1892 [2020-11-29 20:53:00,507 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-11-29 20:53:00,512 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-11-29 20:53:00,532 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-11-29 20:53:00,533 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-11-29 20:53:00,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:53:00,537 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:53:00,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:53:00,538 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:53:00,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:53:00,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1281927427, now seen corresponding path program 1 times [2020-11-29 20:53:00,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:53:00,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442441285] [2020-11-29 20:53:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:53:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:53:00,745 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 20:53:00,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442441285] [2020-11-29 20:53:00,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:53:00,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:53:00,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663944484] [2020-11-29 20:53:00,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:53:00,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:53:00,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:53:00,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:53:00,771 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-11-29 20:53:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:53:00,791 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-11-29 20:53:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:53:00,792 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-29 20:53:00,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:53:00,801 INFO L225 Difference]: With dead ends: 90 [2020-11-29 20:53:00,801 INFO L226 Difference]: Without dead ends: 74 [2020-11-29 20:53:00,803 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 20:53:00,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-29 20:53:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-29 20:53:00,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-29 20:53:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-11-29 20:53:00,859 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-11-29 20:53:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:53:00,859 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-11-29 20:53:00,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:53:00,860 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-11-29 20:53:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:53:00,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:53:00,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:53:00,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:53:00,861 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:53:00,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:53:00,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1085050971, now seen corresponding path program 1 times [2020-11-29 20:53:00,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:53:00,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670004742] [2020-11-29 20:53:00,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:53:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:53:01,003 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 20:53:01,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670004742] [2020-11-29 20:53:01,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:53:01,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:53:01,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021603935] [2020-11-29 20:53:01,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:53:01,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:53:01,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:53:01,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:53:01,006 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-11-29 20:53:01,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:53:01,049 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2020-11-29 20:53:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:53:01,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 20:53:01,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:53:01,052 INFO L225 Difference]: With dead ends: 82 [2020-11-29 20:53:01,052 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 20:53:01,053 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 [2020-11-29 20:53:01,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 20:53:01,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-29 20:53:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 20:53:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 138 transitions. [2020-11-29 20:53:01,059 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 138 transitions. Word has length 7 [2020-11-29 20:53:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:53:01,059 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 138 transitions. [2020-11-29 20:53:01,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:53:01,059 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 138 transitions. [2020-11-29 20:53:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:53:01,060 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:53:01,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:53:01,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:53:01,061 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:53:01,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:53:01,061 INFO L82 PathProgramCache]: Analyzing trace with hash 722349434, now seen corresponding path program 1 times [2020-11-29 20:53:01,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:53:01,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347550986] [2020-11-29 20:53:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:53:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:53:01,159 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 20:53:01,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347550986] [2020-11-29 20:53:01,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:53:01,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:53:01,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641237866] [2020-11-29 20:53:01,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:53:01,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:53:01,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:53:01,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:53:01,162 INFO L87 Difference]: Start difference. First operand 66 states and 138 transitions. Second operand 6 states. [2020-11-29 20:53:01,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:53:01,342 INFO L93 Difference]: Finished difference Result 78 states and 155 transitions. [2020-11-29 20:53:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:53:01,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-29 20:53:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:53:01,347 INFO L225 Difference]: With dead ends: 78 [2020-11-29 20:53:01,347 INFO L226 Difference]: Without dead ends: 42 [2020-11-29 20:53:01,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:53:01,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-29 20:53:01,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-29 20:53:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-29 20:53:01,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-11-29 20:53:01,354 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 8 [2020-11-29 20:53:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:53:01,354 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-11-29 20:53:01,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:53:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-11-29 20:53:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:53:01,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:53:01,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:53:01,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:53:01,356 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:53:01,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:53:01,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1631439828, now seen corresponding path program 1 times [2020-11-29 20:53:01,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:53:01,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995935438] [2020-11-29 20:53:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:53:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:53:01,504 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 20:53:01,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995935438] [2020-11-29 20:53:01,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:53:01,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:53:01,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712212953] [2020-11-29 20:53:01,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:53:01,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:53:01,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:53:01,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:53:01,506 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 6 states. [2020-11-29 20:53:01,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:53:01,611 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2020-11-29 20:53:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:53:01,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-29 20:53:01,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:53:01,611 INFO L225 Difference]: With dead ends: 36 [2020-11-29 20:53:01,612 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:53:01,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:53:01,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:53:01,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:53:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:53:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:53:01,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-29 20:53:01,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:53:01,613 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:53:01,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:53:01,613 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:53:01,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:53:01,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:53:01,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:53:01 BasicIcfg [2020-11-29 20:53:01,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:53:01,619 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:53:01,619 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:53:01,619 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:53:01,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:52:57" (3/4) ... [2020-11-29 20:53:01,622 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:53:01,631 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 20:53:01,631 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 20:53:01,639 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-29 20:53:01,640 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:53:01,640 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:53:01,640 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:53:01,702 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f5ece8e6-765d-4750-af7e-f225c58004bc/bin/uautomizer/witness.graphml [2020-11-29 20:53:01,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:53:01,703 INFO L168 Benchmark]: Toolchain (without parser) took 5339.19 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 69.1 MB in the beginning and 94.6 MB in the end (delta: -25.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:53:01,704 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory was 37.8 MB in the beginning and 37.8 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:53:01,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 582.49 ms. Allocated memory is still 98.6 MB. Free memory was 69.1 MB in the beginning and 55.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:53:01,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.45 ms. Allocated memory is still 98.6 MB. Free memory was 55.0 MB in the beginning and 52.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:53:01,706 INFO L168 Benchmark]: Boogie Preprocessor took 24.55 ms. Allocated memory is still 98.6 MB. Free memory was 52.9 MB in the beginning and 51.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:53:01,710 INFO L168 Benchmark]: RCFGBuilder took 570.89 ms. Allocated memory is still 98.6 MB. Free memory was 51.7 MB in the beginning and 58.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:53:01,710 INFO L168 Benchmark]: TraceAbstraction took 4011.71 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 57.8 MB in the beginning and 97.8 MB in the end (delta: -40.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:53:01,711 INFO L168 Benchmark]: Witness Printer took 83.41 ms. Allocated memory is still 144.7 MB. Free memory was 97.8 MB in the beginning and 94.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:53:01,713 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 79.7 MB. Free memory was 37.8 MB in the beginning and 37.8 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 582.49 ms. Allocated memory is still 98.6 MB. Free memory was 69.1 MB in the beginning and 55.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.45 ms. Allocated memory is still 98.6 MB. Free memory was 55.0 MB in the beginning and 52.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.55 ms. Allocated memory is still 98.6 MB. Free memory was 52.9 MB in the beginning and 51.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 570.89 ms. Allocated memory is still 98.6 MB. Free memory was 51.7 MB in the beginning and 58.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4011.71 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 57.8 MB in the beginning and 97.8 MB in the end (delta: -40.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 83.41 ms. Allocated memory is still 144.7 MB. Free memory was 97.8 MB in the beginning and 94.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 543 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 43 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 1892 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 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 51 SDtfs, 76 SDslu, 69 SDs, 0 SdLazy, 65 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1063 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...