./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/15_dekker.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/15_dekker.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 316c62654735ab7f9412d0ff424f710640d92e79 ....................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:46:36,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:36,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:36,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:36,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:36,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:36,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:36,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:36,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:36,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:36,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:36,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:36,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:36,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:36,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:36,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:36,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:36,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:36,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:36,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:36,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:36,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:36,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:36,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:36,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:36,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:36,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:36,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:36,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:36,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:36,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:36,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:36,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:36,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:36,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:36,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:36,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:36,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:36,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:36,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:36,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:36,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:46:36,472 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:36,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:36,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:36,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:36,473 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:36,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:36,474 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:46:36,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:46:36,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:46:36,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:36,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:46:36,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:36,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:46:36,475 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:46:36,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:36,475 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:36,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:46:36,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:36,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:36,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:36,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:36,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:36,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:36,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:36,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:46:36,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:46:36,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:46:36,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:46:36,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 316c62654735ab7f9412d0ff424f710640d92e79 [2019-11-25 08:46:36,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:36,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:36,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:36,640 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:36,641 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:36,641 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/15_dekker.i [2019-11-25 08:46:36,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer/data/0e882bcc9/0f303fd790f84f60b92868207ded7dab/FLAGd66247988 [2019-11-25 08:46:37,239 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:37,244 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/sv-benchmarks/c/pthread-ext/15_dekker.i [2019-11-25 08:46:37,263 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer/data/0e882bcc9/0f303fd790f84f60b92868207ded7dab/FLAGd66247988 [2019-11-25 08:46:37,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer/data/0e882bcc9/0f303fd790f84f60b92868207ded7dab [2019-11-25 08:46:37,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:37,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:37,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:37,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:37,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:37,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:37" (1/1) ... [2019-11-25 08:46:37,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c7fdb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:37, skipping insertion in model container [2019-11-25 08:46:37,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:37" (1/1) ... [2019-11-25 08:46:37,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:37,763 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:38,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:38,108 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:38,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:38,249 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:38,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:38 WrapperNode [2019-11-25 08:46:38,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:38,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:38,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:38,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:38,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:38" (1/1) ... [2019-11-25 08:46:38,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:38" (1/1) ... [2019-11-25 08:46:38,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:38,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:38,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:38,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:38,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:38" (1/1) ... [2019-11-25 08:46:38,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:38" (1/1) ... [2019-11-25 08:46:38,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:38" (1/1) ... [2019-11-25 08:46:38,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:38" (1/1) ... [2019-11-25 08:46:38,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:38" (1/1) ... [2019-11-25 08:46:38,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:38" (1/1) ... [2019-11-25 08:46:38,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:38" (1/1) ... [2019-11-25 08:46:38,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:38,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:38,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:38,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:38,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:38,378 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-25 08:46:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-25 08:46:38,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:46:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:46:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:46:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:38,381 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-25 08:46:38,664 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:38,665 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-25 08:46:38,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:38 BoogieIcfgContainer [2019-11-25 08:46:38,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:38,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:38,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:38,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:38,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:37" (1/3) ... [2019-11-25 08:46:38,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260d0181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:38, skipping insertion in model container [2019-11-25 08:46:38,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:38" (2/3) ... [2019-11-25 08:46:38,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260d0181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:38, skipping insertion in model container [2019-11-25 08:46:38,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:38" (3/3) ... [2019-11-25 08:46:38,672 INFO L109 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2019-11-25 08:46:38,710 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,710 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,710 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,710 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,711 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,712 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,712 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,712 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,713 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,713 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,714 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,714 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,715 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,715 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,715 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,715 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,716 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,716 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:38,735 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-25 08:46:38,735 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:38,742 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-25 08:46:38,751 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-25 08:46:38,769 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:38,769 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:46:38,769 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:38,769 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:38,770 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:38,770 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:38,770 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:38,770 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:38,781 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 108 transitions [2019-11-25 08:46:38,830 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 428 states. [2019-11-25 08:46:38,832 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states. [2019-11-25 08:46:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:46:38,839 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:38,839 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:38,840 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:38,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:38,845 INFO L82 PathProgramCache]: Analyzing trace with hash 601012429, now seen corresponding path program 1 times [2019-11-25 08:46:38,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:38,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838243873] [2019-11-25 08:46:38,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:38,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838243873] [2019-11-25 08:46:38,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:38,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:46:38,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223537382] [2019-11-25 08:46:38,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:46:38,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:39,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:46:39,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:46:39,008 INFO L87 Difference]: Start difference. First operand 428 states. Second operand 2 states. [2019-11-25 08:46:39,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:39,037 INFO L93 Difference]: Finished difference Result 428 states and 928 transitions. [2019-11-25 08:46:39,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:46:39,038 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-11-25 08:46:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:39,053 INFO L225 Difference]: With dead ends: 428 [2019-11-25 08:46:39,053 INFO L226 Difference]: Without dead ends: 373 [2019-11-25 08:46:39,055 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:46:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2019-11-25 08:46:39,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2019-11-25 08:46:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2019-11-25 08:46:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 818 transitions. [2019-11-25 08:46:39,127 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 818 transitions. Word has length 18 [2019-11-25 08:46:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:39,127 INFO L462 AbstractCegarLoop]: Abstraction has 373 states and 818 transitions. [2019-11-25 08:46:39,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:46:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 818 transitions. [2019-11-25 08:46:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:46:39,128 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:39,129 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:39,129 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:39,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:39,129 INFO L82 PathProgramCache]: Analyzing trace with hash 601042220, now seen corresponding path program 1 times [2019-11-25 08:46:39,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:39,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869406261] [2019-11-25 08:46:39,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:39,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869406261] [2019-11-25 08:46:39,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:39,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:46:39,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374071521] [2019-11-25 08:46:39,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:39,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:39,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:39,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:39,192 INFO L87 Difference]: Start difference. First operand 373 states and 818 transitions. Second operand 3 states. [2019-11-25 08:46:39,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:39,228 INFO L93 Difference]: Finished difference Result 378 states and 801 transitions. [2019-11-25 08:46:39,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:39,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-25 08:46:39,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:39,232 INFO L225 Difference]: With dead ends: 378 [2019-11-25 08:46:39,232 INFO L226 Difference]: Without dead ends: 279 [2019-11-25 08:46:39,233 INFO L630 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 [2019-11-25 08:46:39,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2019-11-25 08:46:39,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 264. [2019-11-25 08:46:39,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2019-11-25 08:46:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 560 transitions. [2019-11-25 08:46:39,256 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 560 transitions. Word has length 18 [2019-11-25 08:46:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:39,256 INFO L462 AbstractCegarLoop]: Abstraction has 264 states and 560 transitions. [2019-11-25 08:46:39,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 560 transitions. [2019-11-25 08:46:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:46:39,258 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:39,258 INFO L410 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] [2019-11-25 08:46:39,258 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:39,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:39,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1652523885, now seen corresponding path program 1 times [2019-11-25 08:46:39,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:39,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10722218] [2019-11-25 08:46:39,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:39,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10722218] [2019-11-25 08:46:39,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:39,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:46:39,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132699591] [2019-11-25 08:46:39,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:39,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:39,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:39,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:39,325 INFO L87 Difference]: Start difference. First operand 264 states and 560 transitions. Second operand 3 states. [2019-11-25 08:46:39,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:39,357 INFO L93 Difference]: Finished difference Result 247 states and 513 transitions. [2019-11-25 08:46:39,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:39,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-11-25 08:46:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:39,360 INFO L225 Difference]: With dead ends: 247 [2019-11-25 08:46:39,360 INFO L226 Difference]: Without dead ends: 182 [2019-11-25 08:46:39,360 INFO L630 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 [2019-11-25 08:46:39,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-11-25 08:46:39,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2019-11-25 08:46:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-11-25 08:46:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 374 transitions. [2019-11-25 08:46:39,373 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 374 transitions. Word has length 22 [2019-11-25 08:46:39,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:39,373 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 374 transitions. [2019-11-25 08:46:39,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:39,373 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 374 transitions. [2019-11-25 08:46:39,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:46:39,375 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:39,375 INFO L410 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, 1] [2019-11-25 08:46:39,376 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:39,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1222482101, now seen corresponding path program 1 times [2019-11-25 08:46:39,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:39,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077052252] [2019-11-25 08:46:39,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:39,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077052252] [2019-11-25 08:46:39,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:39,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:46:39,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384354840] [2019-11-25 08:46:39,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:39,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:39,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:39,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:39,424 INFO L87 Difference]: Start difference. First operand 182 states and 374 transitions. Second operand 3 states. [2019-11-25 08:46:39,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:39,437 INFO L93 Difference]: Finished difference Result 182 states and 369 transitions. [2019-11-25 08:46:39,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:39,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-11-25 08:46:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:39,439 INFO L225 Difference]: With dead ends: 182 [2019-11-25 08:46:39,440 INFO L226 Difference]: Without dead ends: 160 [2019-11-25 08:46:39,440 INFO L630 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 [2019-11-25 08:46:39,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-11-25 08:46:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2019-11-25 08:46:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-11-25 08:46:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 321 transitions. [2019-11-25 08:46:39,449 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 321 transitions. Word has length 26 [2019-11-25 08:46:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:39,449 INFO L462 AbstractCegarLoop]: Abstraction has 160 states and 321 transitions. [2019-11-25 08:46:39,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 321 transitions. [2019-11-25 08:46:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:46:39,451 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:39,451 INFO L410 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, 1] [2019-11-25 08:46:39,451 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:39,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:39,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1605614162, now seen corresponding path program 1 times [2019-11-25 08:46:39,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:39,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326873983] [2019-11-25 08:46:39,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:39,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:39,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326873983] [2019-11-25 08:46:39,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:39,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:46:39,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204033978] [2019-11-25 08:46:39,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:39,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:39,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:39,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:39,488 INFO L87 Difference]: Start difference. First operand 160 states and 321 transitions. Second operand 3 states. [2019-11-25 08:46:39,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:39,511 INFO L93 Difference]: Finished difference Result 103 states and 231 transitions. [2019-11-25 08:46:39,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:39,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-11-25 08:46:39,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:39,512 INFO L225 Difference]: With dead ends: 103 [2019-11-25 08:46:39,512 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:46:39,512 INFO L630 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 [2019-11-25 08:46:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:46:39,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:46:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:46:39,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:46:39,513 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-11-25 08:46:39,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:39,513 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:39,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:39,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:46:39,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:46:39,516 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-25 08:46:39,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:39 BasicIcfg [2019-11-25 08:46:39,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:39,521 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:39,521 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:39,521 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:39,522 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:38" (3/4) ... [2019-11-25 08:46:39,525 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:46:39,533 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-25 08:46:39,539 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-25 08:46:39,540 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:46:39,540 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:46:39,577 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0be46df0-05d6-4d14-9cce-8cc23b31424f/bin/uautomizer/witness.graphml [2019-11-25 08:46:39,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:39,579 INFO L168 Benchmark]: Toolchain (without parser) took 1864.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 938.0 MB in the beginning and 974.1 MB in the end (delta: -36.1 MB). Peak memory consumption was 74.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:39,579 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:39,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 534.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -140.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:39,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:39,581 INFO L168 Benchmark]: Boogie Preprocessor took 26.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:39,581 INFO L168 Benchmark]: RCFGBuilder took 346.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:39,582 INFO L168 Benchmark]: TraceAbstraction took 853.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 974.1 MB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:39,582 INFO L168 Benchmark]: Witness Printer took 55.83 ms. Allocated memory is still 1.1 GB. Free memory is still 974.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:39,585 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 534.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -140.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 346.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 853.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 974.1 MB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 11.5 GB. * Witness Printer took 55.83 ms. Allocated memory is still 1.1 GB. Free memory is still 974.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 701]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 102 locations, 5 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 312 SDtfs, 117 SDslu, 129 SDs, 0 SdLazy, 24 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 2745 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...