./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe031_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe031_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b587afa57daf57a0495065851ba1ebf70e187f92 .................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:42:18,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:42:18,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:42:18,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:42:18,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:42:18,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:42:18,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:42:18,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:42:18,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:42:18,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:42:18,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:42:18,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:42:18,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:42:18,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:42:18,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:42:18,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:42:18,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:42:18,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:42:18,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:42:18,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:42:18,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:42:18,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:42:18,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:42:18,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:42:18,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:42:18,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:42:18,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:42:18,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:42:18,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:42:18,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:42:18,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:42:18,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:42:18,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:42:18,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:42:18,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:42:18,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:42:18,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:42:18,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:42:18,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:42:18,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:42:18,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:42:18,271 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:42:18,280 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:42:18,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:42:18,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:42:18,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:42:18,281 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:42:18,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:42:18,281 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:42:18,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:42:18,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:42:18,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:42:18,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:42:18,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:42:18,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:42:18,282 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:42:18,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:42:18,282 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:42:18,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:42:18,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:42:18,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:42:18,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:42:18,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:42:18,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:42:18,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:42:18,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:42:18,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:42:18,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:42:18,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:42:18,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:42:18,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:42:18,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b587afa57daf57a0495065851ba1ebf70e187f92 [2019-12-07 18:42:18,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:42:18,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:42:18,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:42:18,398 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:42:18,398 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:42:18,399 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe031_tso.oepc.i [2019-12-07 18:42:18,437 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer/data/5ed1dbd7d/88f19ca3e1d84adea5481fa2d6afce1a/FLAGed4390c11 [2019-12-07 18:42:18,942 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:42:18,943 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/sv-benchmarks/c/pthread-wmm/safe031_tso.oepc.i [2019-12-07 18:42:18,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer/data/5ed1dbd7d/88f19ca3e1d84adea5481fa2d6afce1a/FLAGed4390c11 [2019-12-07 18:42:18,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer/data/5ed1dbd7d/88f19ca3e1d84adea5481fa2d6afce1a [2019-12-07 18:42:18,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:42:18,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:42:18,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:42:18,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:42:18,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:42:18,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:42:18" (1/1) ... [2019-12-07 18:42:18,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f04252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:18, skipping insertion in model container [2019-12-07 18:42:18,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:42:18" (1/1) ... [2019-12-07 18:42:18,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:42:18,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:42:19,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:42:19,220 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:42:19,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:42:19,296 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:42:19,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:19 WrapperNode [2019-12-07 18:42:19,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:42:19,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:42:19,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:42:19,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:42:19,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:19" (1/1) ... [2019-12-07 18:42:19,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:19" (1/1) ... [2019-12-07 18:42:19,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:42:19,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:42:19,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:42:19,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:42:19,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:19" (1/1) ... [2019-12-07 18:42:19,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:19" (1/1) ... [2019-12-07 18:42:19,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:19" (1/1) ... [2019-12-07 18:42:19,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:19" (1/1) ... [2019-12-07 18:42:19,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:19" (1/1) ... [2019-12-07 18:42:19,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:19" (1/1) ... [2019-12-07 18:42:19,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:19" (1/1) ... [2019-12-07 18:42:19,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:42:19,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:42:19,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:42:19,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:42:19,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:42:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:42:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 18:42:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:42:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:42:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 18:42:19,388 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 18:42:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 18:42:19,388 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 18:42:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 18:42:19,388 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 18:42:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 18:42:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:42:19,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:42:19,389 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 18:42:19,566 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:42:19,566 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 18:42:19,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:42:19 BoogieIcfgContainer [2019-12-07 18:42:19,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:42:19,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:42:19,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:42:19,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:42:19,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:42:18" (1/3) ... [2019-12-07 18:42:19,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b4b018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:42:19, skipping insertion in model container [2019-12-07 18:42:19,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:42:19" (2/3) ... [2019-12-07 18:42:19,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b4b018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:42:19, skipping insertion in model container [2019-12-07 18:42:19,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:42:19" (3/3) ... [2019-12-07 18:42:19,572 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2019-12-07 18:42:19,578 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 18:42:19,578 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:42:19,582 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:42:19,583 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 18:42:19,603 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,603 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,603 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,603 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,604 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,604 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,604 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,604 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,604 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,604 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,605 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,605 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,605 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,605 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,605 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,606 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,606 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,606 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:42:19,621 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 18:42:19,634 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:42:19,634 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:42:19,634 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:42:19,634 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:42:19,634 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:42:19,634 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:42:19,634 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:42:19,634 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:42:19,642 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-07 18:42:19,643 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-07 18:42:19,668 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-07 18:42:19,668 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:42:19,673 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 18:42:19,675 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-07 18:42:19,685 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-07 18:42:19,686 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:42:19,687 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 18:42:19,688 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 18:42:19,689 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 18:42:20,365 INFO L206 etLargeBlockEncoding]: Checked pairs total: 469 [2019-12-07 18:42:20,365 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-07 18:42:20,368 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-07 18:42:20,377 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-07 18:42:20,379 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-07 18:42:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 18:42:20,384 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:42:20,385 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:42:20,385 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:42:20,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:42:20,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1445202822, now seen corresponding path program 1 times [2019-12-07 18:42:20,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:42:20,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617757646] [2019-12-07 18:42:20,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:42:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:42:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:42:20,566 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617757646] [2019-12-07 18:42:20,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:42:20,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 18:42:20,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047928454] [2019-12-07 18:42:20,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:42:20,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:42:20,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:42:20,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:42:20,581 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2019-12-07 18:42:20,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:42:20,606 INFO L93 Difference]: Finished difference Result 69 states and 130 transitions. [2019-12-07 18:42:20,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:42:20,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 18:42:20,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:42:20,616 INFO L225 Difference]: With dead ends: 69 [2019-12-07 18:42:20,616 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 18:42:20,618 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:42:20,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 18:42:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2019-12-07 18:42:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 18:42:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 54 transitions. [2019-12-07 18:42:20,644 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 54 transitions. Word has length 8 [2019-12-07 18:42:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:42:20,645 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 54 transitions. [2019-12-07 18:42:20,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:42:20,645 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 54 transitions. [2019-12-07 18:42:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 18:42:20,646 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:42:20,646 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:42:20,646 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:42:20,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:42:20,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1662106288, now seen corresponding path program 1 times [2019-12-07 18:42:20,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:42:20,647 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610273904] [2019-12-07 18:42:20,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:42:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:42:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:42:20,693 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610273904] [2019-12-07 18:42:20,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:42:20,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 18:42:20,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577382093] [2019-12-07 18:42:20,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:42:20,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:42:20,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:42:20,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:42:20,695 INFO L87 Difference]: Start difference. First operand 34 states and 54 transitions. Second operand 3 states. [2019-12-07 18:42:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:42:20,701 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2019-12-07 18:42:20,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:42:20,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-07 18:42:20,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:42:20,702 INFO L225 Difference]: With dead ends: 33 [2019-12-07 18:42:20,702 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 18:42:20,703 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:42:20,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 18:42:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-12-07 18:42:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 18:42:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 40 transitions. [2019-12-07 18:42:20,706 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 40 transitions. Word has length 9 [2019-12-07 18:42:20,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:42:20,706 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 40 transitions. [2019-12-07 18:42:20,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:42:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 40 transitions. [2019-12-07 18:42:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:42:20,707 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:42:20,707 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:42:20,707 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:42:20,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:42:20,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1821789570, now seen corresponding path program 1 times [2019-12-07 18:42:20,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:42:20,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522375690] [2019-12-07 18:42:20,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:42:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:42:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:42:20,771 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522375690] [2019-12-07 18:42:20,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:42:20,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:42:20,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816345063] [2019-12-07 18:42:20,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:42:20,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:42:20,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:42:20,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:42:20,773 INFO L87 Difference]: Start difference. First operand 27 states and 40 transitions. Second operand 6 states. [2019-12-07 18:42:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:42:20,827 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2019-12-07 18:42:20,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:42:20,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 18:42:20,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:42:20,828 INFO L225 Difference]: With dead ends: 26 [2019-12-07 18:42:20,828 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 18:42:20,829 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 18:42:20,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 18:42:20,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 18:42:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 18:42:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-07 18:42:20,831 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2019-12-07 18:42:20,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:42:20,831 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 18:42:20,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:42:20,831 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-12-07 18:42:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:42:20,831 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:42:20,832 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:42:20,832 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:42:20,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:42:20,832 INFO L82 PathProgramCache]: Analyzing trace with hash 505163460, now seen corresponding path program 1 times [2019-12-07 18:42:20,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:42:20,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843711792] [2019-12-07 18:42:20,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:42:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:42:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:42:20,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843711792] [2019-12-07 18:42:20,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:42:20,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:42:20,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174274944] [2019-12-07 18:42:20,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:42:20,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:42:20,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:42:20,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:42:20,880 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-12-07 18:42:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:42:20,892 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-12-07 18:42:20,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:42:20,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 18:42:20,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:42:20,893 INFO L225 Difference]: With dead ends: 14 [2019-12-07 18:42:20,893 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:42:20,893 INFO L630 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 [2019-12-07 18:42:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:42:20,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:42:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:42:20,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:42:20,894 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 18:42:20,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:42:20,894 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:42:20,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:42:20,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:42:20,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:42:20,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:42:20 BasicIcfg [2019-12-07 18:42:20,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:42:20,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:42:20,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:42:20,897 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:42:20,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:42:19" (3/4) ... [2019-12-07 18:42:20,899 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:42:20,904 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 18:42:20,904 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 18:42:20,904 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 18:42:20,907 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 18:42:20,907 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 18:42:20,907 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 18:42:20,937 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4b45b08b-b795-4bfe-b0e5-9fd9e23b3190/bin/uautomizer/witness.graphml [2019-12-07 18:42:20,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:42:20,939 INFO L168 Benchmark]: Toolchain (without parser) took 1976.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 939.4 MB in the beginning and 1.0 GB in the end (delta: -110.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:42:20,939 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:42:20,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -112.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:42:20,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.51 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:42:20,940 INFO L168 Benchmark]: Boogie Preprocessor took 17.12 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:42:20,941 INFO L168 Benchmark]: RCFGBuilder took 222.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:42:20,941 INFO L168 Benchmark]: TraceAbstraction took 1328.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -33.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:42:20,942 INFO L168 Benchmark]: Witness Printer took 40.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:42:20,944 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 333.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.4 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -112.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.51 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.12 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 222.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1328.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -33.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 40.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 62 ProgramPointsBefore, 22 ProgramPointsAfterwards, 53 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 240 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 14 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 469 CheckedPairsTotal, 44 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 24 SDslu, 23 SDs, 0 SdLazy, 24 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 1564 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...