./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.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_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/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 ef3c0b8255a23d2275ba01906b6c601d8ccf1c1c ..................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:51:32,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:51:32,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:51:32,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:51:32,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:51:32,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:51:32,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:51:32,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:51:32,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:51:32,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:51:32,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:51:32,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:51:32,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:51:32,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:51:32,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:51:32,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:51:32,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:51:32,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:51:32,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:51:32,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:51:32,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:51:32,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:51:32,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:51:32,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:51:32,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:51:32,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:51:32,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:51:32,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:51:32,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:51:32,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:51:32,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:51:32,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:51:32,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:51:32,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:51:32,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:51:32,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:51:32,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:51:32,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:51:32,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:51:32,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:51:32,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:51:32,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:51:32,685 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:51:32,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:51:32,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:51:32,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:51:32,690 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:51:32,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:51:32,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:51:32,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:51:32,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:51:32,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:51:32,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:51:32,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:51:32,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:51:32,694 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:51:32,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:51:32,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:51:32,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:51:32,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:51:32,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:51:32,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:51:32,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:51:32,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:51:32,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:51:32,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:51:32,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:51:32,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:51:32,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:51:32,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:51:32,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:51:32,699 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_8ab6bdae-662d-4b24-b642-4c17d71bddcd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef3c0b8255a23d2275ba01906b6c601d8ccf1c1c [2020-11-30 00:51:33,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:51:33,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:51:33,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:51:33,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:51:33,210 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:51:33,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer/../../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2020-11-30 00:51:33,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer/data/8543fec16/09399334f9d947f7a9cd2ba9a58c6e27/FLAG52d07188a [2020-11-30 00:51:34,244 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:51:34,249 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2020-11-30 00:51:34,291 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer/data/8543fec16/09399334f9d947f7a9cd2ba9a58c6e27/FLAG52d07188a [2020-11-30 00:51:34,458 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer/data/8543fec16/09399334f9d947f7a9cd2ba9a58c6e27 [2020-11-30 00:51:34,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:51:34,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:51:34,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:51:34,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:51:34,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:51:34,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:51:34" (1/1) ... [2020-11-30 00:51:34,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277baef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:34, skipping insertion in model container [2020-11-30 00:51:34,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:51:34" (1/1) ... [2020-11-30 00:51:34,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:51:34,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:51:35,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:51:35,114 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:51:35,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:51:35,324 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:51:35,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:35 WrapperNode [2020-11-30 00:51:35,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:51:35,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:51:35,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:51:35,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:51:35,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:35" (1/1) ... [2020-11-30 00:51:35,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:35" (1/1) ... [2020-11-30 00:51:35,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:51:35,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:51:35,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:51:35,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:51:35,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:35" (1/1) ... [2020-11-30 00:51:35,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:35" (1/1) ... [2020-11-30 00:51:35,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:35" (1/1) ... [2020-11-30 00:51:35,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:35" (1/1) ... [2020-11-30 00:51:35,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:35" (1/1) ... [2020-11-30 00:51:35,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:35" (1/1) ... [2020-11-30 00:51:35,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:35" (1/1) ... [2020-11-30 00:51:35,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:51:35,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:51:35,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:51:35,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:51:35,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:51:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:51:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:51:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-30 00:51:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:51:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2020-11-30 00:51:35,541 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2020-11-30 00:51:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:51:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:51:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:51:35,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:51:35,544 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 00:51:36,270 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:51:36,270 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 00:51:36,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:51:36 BoogieIcfgContainer [2020-11-30 00:51:36,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:51:36,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:51:36,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:51:36,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:51:36,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:51:34" (1/3) ... [2020-11-30 00:51:36,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133c75ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:51:36, skipping insertion in model container [2020-11-30 00:51:36,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:35" (2/3) ... [2020-11-30 00:51:36,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133c75ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:51:36, skipping insertion in model container [2020-11-30 00:51:36,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:51:36" (3/3) ... [2020-11-30 00:51:36,285 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2020-11-30 00:51:36,301 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 00:51:36,301 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:51:36,308 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:51:36,309 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 00:51:36,341 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,341 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,342 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,342 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,342 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,343 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,343 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~p~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,343 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~p~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,344 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,344 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,345 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,345 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,345 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,346 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,346 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,346 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~p~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,347 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~p~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,347 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,348 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,349 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,349 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,349 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~p~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,349 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~p~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,350 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,350 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~p~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,350 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,351 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~p~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,351 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,351 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,352 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,352 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,352 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~p~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,352 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~p~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,353 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,353 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,354 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,357 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,358 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,358 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~p~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,358 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,359 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,359 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,359 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,359 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~p~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,360 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,360 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,360 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,361 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,361 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:51:36,377 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-11-30 00:51:36,393 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:51:36,421 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:51:36,422 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:51:36,422 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:51:36,422 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:51:36,422 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:51:36,423 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:51:36,423 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:51:36,423 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:51:36,441 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 00:51:36,443 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 103 transitions, 214 flow [2020-11-30 00:51:36,447 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 103 transitions, 214 flow [2020-11-30 00:51:36,450 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 103 transitions, 214 flow [2020-11-30 00:51:36,517 INFO L129 PetriNetUnfolder]: 10/102 cut-off events. [2020-11-30 00:51:36,517 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-11-30 00:51:36,530 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 102 events. 10/102 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 157 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 58. Up to 3 conditions per place. [2020-11-30 00:51:36,535 INFO L116 LiptonReduction]: Number of co-enabled transitions 1650 [2020-11-30 00:51:39,816 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-11-30 00:51:39,957 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-30 00:51:40,556 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-11-30 00:51:40,700 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-30 00:51:41,884 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2020-11-30 00:51:42,325 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-11-30 00:51:42,469 INFO L131 LiptonReduction]: Checked pairs total: 3041 [2020-11-30 00:51:42,470 INFO L133 LiptonReduction]: Total number of compositions: 97 [2020-11-30 00:51:42,476 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 29 transitions, 66 flow [2020-11-30 00:51:42,492 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 84 states. [2020-11-30 00:51:42,495 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-11-30 00:51:42,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 00:51:42,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:51:42,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 00:51:42,504 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:51:42,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:51:42,512 INFO L82 PathProgramCache]: Analyzing trace with hash 382634512, now seen corresponding path program 1 times [2020-11-30 00:51:42,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:51:42,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132854390] [2020-11-30 00:51:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:51:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:42,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:42,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132854390] [2020-11-30 00:51:42,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:51:42,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 00:51:42,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062758478] [2020-11-30 00:51:42,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:51:42,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:51:42,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:51:42,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:51:42,843 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-11-30 00:51:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:51:42,943 INFO L93 Difference]: Finished difference Result 105 states and 178 transitions. [2020-11-30 00:51:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:51:42,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 00:51:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:51:42,959 INFO L225 Difference]: With dead ends: 105 [2020-11-30 00:51:42,962 INFO L226 Difference]: Without dead ends: 38 [2020-11-30 00:51:42,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:51:42,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-30 00:51:43,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-11-30 00:51:43,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-30 00:51:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-11-30 00:51:43,029 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 5 [2020-11-30 00:51:43,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:51:43,029 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-11-30 00:51:43,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:51:43,030 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-11-30 00:51:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:51:43,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:51:43,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:51:43,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:51:43,034 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:51:43,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:51:43,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1132588708, now seen corresponding path program 1 times [2020-11-30 00:51:43,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:51:43,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748852427] [2020-11-30 00:51:43,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:51:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:43,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748852427] [2020-11-30 00:51:43,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:51:43,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:51:43,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514304309] [2020-11-30 00:51:43,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:51:43,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:51:43,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:51:43,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:51:43,282 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 5 states. [2020-11-30 00:51:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:51:43,337 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2020-11-30 00:51:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:51:43,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-30 00:51:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:51:43,338 INFO L225 Difference]: With dead ends: 17 [2020-11-30 00:51:43,338 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 00:51:43,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:51:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 00:51:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 00:51:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 00:51:43,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-30 00:51:43,342 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 9 [2020-11-30 00:51:43,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:51:43,342 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-30 00:51:43,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:51:43,343 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-30 00:51:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:51:43,343 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:51:43,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:51:43,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:51:43,344 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:51:43,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:51:43,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2136993341, now seen corresponding path program 1 times [2020-11-30 00:51:43,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:51:43,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489872200] [2020-11-30 00:51:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:51:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:43,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489872200] [2020-11-30 00:51:43,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:51:43,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:51:43,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909603262] [2020-11-30 00:51:43,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:51:43,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:51:43,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:51:43,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:51:43,622 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 7 states. [2020-11-30 00:51:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:51:43,785 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-11-30 00:51:43,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:51:43,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-30 00:51:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:51:43,788 INFO L225 Difference]: With dead ends: 14 [2020-11-30 00:51:43,788 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:51:43,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:51:43,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:51:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:51:43,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:51:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:51:43,790 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-30 00:51:43,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:51:43,790 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:51:43,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:51:43,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:51:43,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:51:43,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:51:43,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:51:43 BasicIcfg [2020-11-30 00:51:43,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:51:43,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:51:43,798 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:51:43,799 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:51:43,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:51:36" (3/4) ... [2020-11-30 00:51:43,804 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:51:43,816 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2020-11-30 00:51:43,826 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-30 00:51:43,826 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:51:43,827 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:51:43,827 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:51:43,906 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8ab6bdae-662d-4b24-b642-4c17d71bddcd/bin/uautomizer/witness.graphml [2020-11-30 00:51:43,907 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:51:43,912 INFO L168 Benchmark]: Toolchain (without parser) took 9445.70 ms. Allocated memory was 94.4 MB in the beginning and 159.4 MB in the end (delta: 65.0 MB). Free memory was 62.4 MB in the beginning and 62.6 MB in the end (delta: -154.3 kB). Peak memory consumption was 64.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:43,913 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 94.4 MB. Free memory was 52.7 MB in the beginning and 52.6 MB in the end (delta: 65.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:43,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 860.79 ms. Allocated memory is still 94.4 MB. Free memory was 62.2 MB in the beginning and 52.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:43,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.12 ms. Allocated memory is still 94.4 MB. Free memory was 51.7 MB in the beginning and 49.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:43,916 INFO L168 Benchmark]: Boogie Preprocessor took 48.52 ms. Allocated memory is still 94.4 MB. Free memory was 49.8 MB in the beginning and 48.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:43,916 INFO L168 Benchmark]: RCFGBuilder took 835.41 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 48.2 MB in the beginning and 91.8 MB in the end (delta: -43.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:43,918 INFO L168 Benchmark]: TraceAbstraction took 7521.36 ms. Allocated memory was 123.7 MB in the beginning and 159.4 MB in the end (delta: 35.7 MB). Free memory was 91.0 MB in the beginning and 65.7 MB in the end (delta: 25.3 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:43,918 INFO L168 Benchmark]: Witness Printer took 109.20 ms. Allocated memory is still 159.4 MB. Free memory was 65.7 MB in the beginning and 62.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:43,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 94.4 MB. Free memory was 52.7 MB in the beginning and 52.6 MB in the end (delta: 65.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 860.79 ms. Allocated memory is still 94.4 MB. Free memory was 62.2 MB in the beginning and 52.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.12 ms. Allocated memory is still 94.4 MB. Free memory was 51.7 MB in the beginning and 49.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.52 ms. Allocated memory is still 94.4 MB. Free memory was 49.8 MB in the beginning and 48.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 835.41 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 48.2 MB in the beginning and 91.8 MB in the end (delta: -43.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7521.36 ms. Allocated memory was 123.7 MB in the beginning and 159.4 MB in the end (delta: 35.7 MB). Free memory was 91.0 MB in the beginning and 65.7 MB in the end (delta: 25.3 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.1 GB. * Witness Printer took 109.20 ms. Allocated memory is still 159.4 MB. Free memory was 65.7 MB in the beginning and 62.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1125 VarBasedMoverChecksPositive, 136 VarBasedMoverChecksNegative, 94 SemBasedMoverChecksPositive, 42 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.9s, 99 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.0s, 97 PlacesBefore, 25 PlacesAfterwards, 103 TransitionsBefore, 29 TransitionsAfterwards, 1650 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 97 TotalNumberOfCompositions, 3041 MoverChecksTotal - PositiveResult [Line: 683]: 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 2 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 34 SDtfs, 34 SDslu, 28 SDs, 0 SdLazy, 46 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 2216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...