./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stateful01-2.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_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stateful01-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/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 7bac82cd4a0797200932e51fab694b09c1d6fd54 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:27:22,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:27:22,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:27:22,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:27:22,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:27:22,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:27:22,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:27:22,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:27:22,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:27:22,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:27:22,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:27:22,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:27:22,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:27:22,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:27:22,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:27:22,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:27:22,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:27:22,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:27:22,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:27:22,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:27:22,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:27:22,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:27:22,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:27:22,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:27:22,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:27:22,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:27:22,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:27:22,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:27:22,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:27:22,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:27:22,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:27:22,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:27:22,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:27:22,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:27:22,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:27:22,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:27:22,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:27:22,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:27:22,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:27:22,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:27:22,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:27:22,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:27:22,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:27:22,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:27:22,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:27:22,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:27:22,521 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:27:22,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:27:22,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:27:22,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:27:22,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:27:22,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:27:22,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:27:22,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:27:22,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:27:22,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:27:22,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:27:22,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:27:22,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:27:22,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:27:22,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:27:22,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:27:22,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:27:22,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:27:22,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:27:22,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:27:22,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:27:22,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:27:22,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:27:22,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:27:22,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:27:22,526 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_9db4514e-f6cb-40b8-9ca4-587a4079d490/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bac82cd4a0797200932e51fab694b09c1d6fd54 [2020-11-29 20:27:22,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:27:22,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:27:22,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:27:22,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:27:22,863 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:27:22,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer/../../sv-benchmarks/c/pthread/stateful01-2.i [2020-11-29 20:27:22,963 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer/data/56e0196c9/b29d8ceddfef4ee68564a2aa0dc34875/FLAG62f4f7fdf [2020-11-29 20:27:23,553 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:27:23,553 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/sv-benchmarks/c/pthread/stateful01-2.i [2020-11-29 20:27:23,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer/data/56e0196c9/b29d8ceddfef4ee68564a2aa0dc34875/FLAG62f4f7fdf [2020-11-29 20:27:23,802 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer/data/56e0196c9/b29d8ceddfef4ee68564a2aa0dc34875 [2020-11-29 20:27:23,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:27:23,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:27:23,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:27:23,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:27:23,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:27:23,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:27:23" (1/1) ... [2020-11-29 20:27:23,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6330648c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:23, skipping insertion in model container [2020-11-29 20:27:23,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:27:23" (1/1) ... [2020-11-29 20:27:23,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:27:23,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:27:24,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:27:24,340 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:27:24,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:27:24,537 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:27:24,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:24 WrapperNode [2020-11-29 20:27:24,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:27:24,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:27:24,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:27:24,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:27:24,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:24" (1/1) ... [2020-11-29 20:27:24,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:24" (1/1) ... [2020-11-29 20:27:24,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:27:24,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:27:24,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:27:24,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:27:24,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:24" (1/1) ... [2020-11-29 20:27:24,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:24" (1/1) ... [2020-11-29 20:27:24,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:24" (1/1) ... [2020-11-29 20:27:24,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:24" (1/1) ... [2020-11-29 20:27:24,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:24" (1/1) ... [2020-11-29 20:27:24,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:24" (1/1) ... [2020-11-29 20:27:24,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:24" (1/1) ... [2020-11-29 20:27:24,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:27:24,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:27:24,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:27:24,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:27:24,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:27:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:27:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-11-29 20:27:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-11-29 20:27:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-11-29 20:27:24,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-11-29 20:27:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:27:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-29 20:27:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:27:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:27:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:27:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:27:24,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:27:24,731 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-29 20:27:25,392 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:27:25,394 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 20:27:25,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:27:25 BoogieIcfgContainer [2020-11-29 20:27:25,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:27:25,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:27:25,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:27:25,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:27:25,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:27:23" (1/3) ... [2020-11-29 20:27:25,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2f9b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:27:25, skipping insertion in model container [2020-11-29 20:27:25,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:27:24" (2/3) ... [2020-11-29 20:27:25,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2f9b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:27:25, skipping insertion in model container [2020-11-29 20:27:25,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:27:25" (3/3) ... [2020-11-29 20:27:25,413 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2020-11-29 20:27:25,423 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 20:27:25,423 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:27:25,427 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:27:25,428 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 20:27:25,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,454 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,454 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,458 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,458 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,458 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,458 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,458 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,463 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,463 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,464 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,471 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,471 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,471 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,471 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,471 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:27:25,481 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-29 20:27:25,493 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 20:27:25,513 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:27:25,514 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:27:25,514 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:27:25,514 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:27:25,514 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:27:25,514 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:27:25,514 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:27:25,515 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:27:25,527 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 20:27:25,529 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 87 transitions, 196 flow [2020-11-29 20:27:25,532 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 87 transitions, 196 flow [2020-11-29 20:27:25,534 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 87 transitions, 196 flow [2020-11-29 20:27:25,583 INFO L129 PetriNetUnfolder]: 3/87 cut-off events. [2020-11-29 20:27:25,584 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-29 20:27:25,586 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 87 events. 3/87 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 32. Up to 3 conditions per place. [2020-11-29 20:27:25,589 INFO L116 LiptonReduction]: Number of co-enabled transitions 680 [2020-11-29 20:27:27,393 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-29 20:27:27,505 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-11-29 20:27:28,078 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-11-29 20:27:28,215 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-29 20:27:29,000 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2020-11-29 20:27:29,273 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-11-29 20:27:29,283 INFO L131 LiptonReduction]: Checked pairs total: 3315 [2020-11-29 20:27:29,283 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-11-29 20:27:29,295 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 30 transitions, 82 flow [2020-11-29 20:27:29,316 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2020-11-29 20:27:29,317 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-11-29 20:27:29,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:27:29,327 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:29,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:29,328 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:27:29,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:29,333 INFO L82 PathProgramCache]: Analyzing trace with hash -122239032, now seen corresponding path program 1 times [2020-11-29 20:27:29,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:29,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668575531] [2020-11-29 20:27:29,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:29,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668575531] [2020-11-29 20:27:29,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:27:29,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:27:29,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087776062] [2020-11-29 20:27:29,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:27:29,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:29,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:27:29,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:27:29,693 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 5 states. [2020-11-29 20:27:29,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:29,790 INFO L93 Difference]: Finished difference Result 198 states and 413 transitions. [2020-11-29 20:27:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:27:29,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-29 20:27:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:29,807 INFO L225 Difference]: With dead ends: 198 [2020-11-29 20:27:29,810 INFO L226 Difference]: Without dead ends: 170 [2020-11-29 20:27:29,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:27:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-29 20:27:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-11-29 20:27:29,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-11-29 20:27:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 361 transitions. [2020-11-29 20:27:29,886 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 361 transitions. Word has length 25 [2020-11-29 20:27:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:29,887 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 361 transitions. [2020-11-29 20:27:29,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:27:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 361 transitions. [2020-11-29 20:27:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:27:29,893 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:29,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:29,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:27:29,894 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:27:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:29,898 INFO L82 PathProgramCache]: Analyzing trace with hash -150867222, now seen corresponding path program 1 times [2020-11-29 20:27:29,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:29,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753589905] [2020-11-29 20:27:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:30,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753589905] [2020-11-29 20:27:30,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:27:30,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:27:30,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929494180] [2020-11-29 20:27:30,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:27:30,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:30,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:27:30,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:27:30,151 INFO L87 Difference]: Start difference. First operand 170 states and 361 transitions. Second operand 6 states. [2020-11-29 20:27:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:30,256 INFO L93 Difference]: Finished difference Result 335 states and 699 transitions. [2020-11-29 20:27:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:27:30,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-29 20:27:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:30,259 INFO L225 Difference]: With dead ends: 335 [2020-11-29 20:27:30,259 INFO L226 Difference]: Without dead ends: 216 [2020-11-29 20:27:30,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:27:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-29 20:27:30,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 128. [2020-11-29 20:27:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 20:27:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 265 transitions. [2020-11-29 20:27:30,277 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 265 transitions. Word has length 25 [2020-11-29 20:27:30,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:30,277 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 265 transitions. [2020-11-29 20:27:30,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:27:30,280 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 265 transitions. [2020-11-29 20:27:30,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:27:30,281 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:30,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:30,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:27:30,284 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:27:30,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:30,285 INFO L82 PathProgramCache]: Analyzing trace with hash 809966124, now seen corresponding path program 2 times [2020-11-29 20:27:30,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:30,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008639792] [2020-11-29 20:27:30,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:30,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008639792] [2020-11-29 20:27:30,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:27:30,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:27:30,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362942467] [2020-11-29 20:27:30,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:27:30,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:30,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:27:30,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:27:30,355 INFO L87 Difference]: Start difference. First operand 128 states and 265 transitions. Second operand 3 states. [2020-11-29 20:27:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:30,391 INFO L93 Difference]: Finished difference Result 81 states and 125 transitions. [2020-11-29 20:27:30,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:27:30,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 20:27:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:30,393 INFO L225 Difference]: With dead ends: 81 [2020-11-29 20:27:30,393 INFO L226 Difference]: Without dead ends: 73 [2020-11-29 20:27:30,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:27:30,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-29 20:27:30,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-11-29 20:27:30,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-29 20:27:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2020-11-29 20:27:30,399 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 25 [2020-11-29 20:27:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:30,399 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2020-11-29 20:27:30,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:27:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2020-11-29 20:27:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:27:30,400 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:27:30,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:27:30,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:27:30,400 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:27:30,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:27:30,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1396863724, now seen corresponding path program 3 times [2020-11-29 20:27:30,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:27:30,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376585342] [2020-11-29 20:27:30,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:27:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:27:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:27:30,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376585342] [2020-11-29 20:27:30,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:27:30,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:27:30,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177228299] [2020-11-29 20:27:30,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:27:30,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:27:30,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:27:30,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:27:30,542 INFO L87 Difference]: Start difference. First operand 73 states and 111 transitions. Second operand 6 states. [2020-11-29 20:27:30,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:30,592 INFO L93 Difference]: Finished difference Result 72 states and 110 transitions. [2020-11-29 20:27:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:27:30,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-29 20:27:30,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:30,597 INFO L225 Difference]: With dead ends: 72 [2020-11-29 20:27:30,597 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:27:30,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:27:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:27:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:27:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:27:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:27:30,598 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-11-29 20:27:30,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:30,598 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:27:30,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:27:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:27:30,599 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:27:30,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:27:30,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:27:30 BasicIcfg [2020-11-29 20:27:30,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:27:30,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:27:30,603 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:27:30,603 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:27:30,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:27:25" (3/4) ... [2020-11-29 20:27:30,607 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:27:30,613 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2020-11-29 20:27:30,613 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2020-11-29 20:27:30,618 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-29 20:27:30,618 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:27:30,618 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:27:30,619 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:27:30,664 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9db4514e-f6cb-40b8-9ca4-587a4079d490/bin/uautomizer/witness.graphml [2020-11-29 20:27:30,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:27:30,666 INFO L168 Benchmark]: Toolchain (without parser) took 6859.32 ms. Allocated memory was 81.8 MB in the beginning and 142.6 MB in the end (delta: 60.8 MB). Free memory was 59.8 MB in the beginning and 51.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 70.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:27:30,667 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory is still 57.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:27:30,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 740.21 ms. Allocated memory is still 81.8 MB. Free memory was 62.4 MB in the beginning and 56.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:27:30,668 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.50 ms. Allocated memory is still 81.8 MB. Free memory was 56.5 MB in the beginning and 54.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:27:30,668 INFO L168 Benchmark]: Boogie Preprocessor took 26.52 ms. Allocated memory is still 81.8 MB. Free memory was 54.6 MB in the beginning and 53.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:27:30,669 INFO L168 Benchmark]: RCFGBuilder took 742.31 ms. Allocated memory was 81.8 MB in the beginning and 117.4 MB in the end (delta: 35.7 MB). Free memory was 53.0 MB in the beginning and 91.9 MB in the end (delta: -38.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:27:30,669 INFO L168 Benchmark]: TraceAbstraction took 5201.36 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 91.9 MB in the beginning and 54.2 MB in the end (delta: 37.7 MB). Peak memory consumption was 62.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:27:30,670 INFO L168 Benchmark]: Witness Printer took 61.90 ms. Allocated memory is still 142.6 MB. Free memory was 53.1 MB in the beginning and 51.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:27:30,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory is still 57.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 740.21 ms. Allocated memory is still 81.8 MB. Free memory was 62.4 MB in the beginning and 56.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.50 ms. Allocated memory is still 81.8 MB. Free memory was 56.5 MB in the beginning and 54.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.52 ms. Allocated memory is still 81.8 MB. Free memory was 54.6 MB in the beginning and 53.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 742.31 ms. Allocated memory was 81.8 MB in the beginning and 117.4 MB in the end (delta: 35.7 MB). Free memory was 53.0 MB in the beginning and 91.9 MB in the end (delta: -38.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5201.36 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 91.9 MB in the beginning and 54.2 MB in the end (delta: 37.7 MB). Peak memory consumption was 62.9 MB. Max. memory is 16.1 GB. * Witness Printer took 61.90 ms. Allocated memory is still 142.6 MB. Free memory was 53.1 MB in the beginning and 51.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 440 VarBasedMoverChecksPositive, 50 VarBasedMoverChecksNegative, 14 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 146 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 90 PlacesBefore, 35 PlacesAfterwards, 87 TransitionsBefore, 30 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 3315 MoverChecksTotal - PositiveResult [Line: 20]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 150 SDtfs, 101 SDslu, 275 SDs, 0 SdLazy, 70 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred 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, 88 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 12648 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...