./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/dekker.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/dekker.i -s /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/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 f6cb963e1fbb040f542eba054f6a77048b7f932a ............................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:25:48,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:25:48,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:25:48,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:25:48,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:25:48,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:25:48,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:25:48,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:25:48,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:25:48,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:25:48,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:25:48,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:25:48,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:25:48,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:25:48,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:25:48,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:25:48,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:25:48,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:25:48,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:25:48,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:25:48,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:25:48,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:25:48,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:25:48,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:25:48,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:25:48,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:25:48,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:25:48,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:25:48,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:25:48,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:25:48,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:25:48,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:25:48,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:25:48,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:25:48,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:25:48,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:25:48,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:25:48,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:25:48,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:25:48,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:25:48,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:25:48,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:25:48,692 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:25:48,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:25:48,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:25:48,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:25:48,693 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:25:48,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:25:48,693 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:25:48,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:25:48,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:25:48,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:25:48,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:25:48,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:25:48,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:25:48,694 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:25:48,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:25:48,694 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:25:48,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:25:48,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:25:48,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:25:48,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:25:48,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:25:48,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:25:48,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:25:48,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:25:48,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:25:48,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:25:48,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:25:48,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:25:48,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:25:48,696 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_22138c73-4c95-427a-bfec-9799619dde83/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 -> f6cb963e1fbb040f542eba054f6a77048b7f932a [2019-12-07 18:25:48,794 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:25:48,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:25:48,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:25:48,805 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:25:48,805 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:25:48,806 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/bin/uautomizer/../../sv-benchmarks/c/pthread-atomic/dekker.i [2019-12-07 18:25:48,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/bin/uautomizer/data/1af059c44/59d72ef2cc2f4e3292d1813c42d35937/FLAG201350514 [2019-12-07 18:25:49,347 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:25:49,347 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/sv-benchmarks/c/pthread-atomic/dekker.i [2019-12-07 18:25:49,359 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/bin/uautomizer/data/1af059c44/59d72ef2cc2f4e3292d1813c42d35937/FLAG201350514 [2019-12-07 18:25:49,371 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/bin/uautomizer/data/1af059c44/59d72ef2cc2f4e3292d1813c42d35937 [2019-12-07 18:25:49,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:25:49,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:25:49,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:25:49,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:25:49,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:25:49,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:25:49" (1/1) ... [2019-12-07 18:25:49,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c77c204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49, skipping insertion in model container [2019-12-07 18:25:49,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:25:49" (1/1) ... [2019-12-07 18:25:49,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:25:49,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:25:49,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:25:49,629 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:25:49,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:25:49,700 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:25:49,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49 WrapperNode [2019-12-07 18:25:49,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:25:49,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:25:49,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:25:49,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:25:49,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49" (1/1) ... [2019-12-07 18:25:49,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49" (1/1) ... [2019-12-07 18:25:49,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:25:49,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:25:49,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:25:49,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:25:49,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49" (1/1) ... [2019-12-07 18:25:49,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49" (1/1) ... [2019-12-07 18:25:49,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49" (1/1) ... [2019-12-07 18:25:49,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49" (1/1) ... [2019-12-07 18:25:49,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49" (1/1) ... [2019-12-07 18:25:49,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49" (1/1) ... [2019-12-07 18:25:49,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49" (1/1) ... [2019-12-07 18:25:49,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:25:49,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:25:49,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:25:49,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:25:49,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:25:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 18:25:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-12-07 18:25:49,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-12-07 18:25:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-07 18:25:49,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-07 18:25:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:25:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:25:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:25:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:25:49,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:25:49,796 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 18:25:49,970 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:25:49,970 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-07 18:25:49,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:25:49 BoogieIcfgContainer [2019-12-07 18:25:49,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:25:49,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:25:49,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:25:49,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:25:49,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:25:49" (1/3) ... [2019-12-07 18:25:49,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1172c1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:25:49, skipping insertion in model container [2019-12-07 18:25:49,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:25:49" (2/3) ... [2019-12-07 18:25:49,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1172c1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:25:49, skipping insertion in model container [2019-12-07 18:25:49,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:25:49" (3/3) ... [2019-12-07 18:25:49,976 INFO L109 eAbstractionObserver]: Analyzing ICFG dekker.i [2019-12-07 18:25:49,982 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 18:25:49,982 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:25:49,986 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-07 18:25:49,986 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 18:25:50,007 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:25:50,007 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:25:50,007 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:25:50,007 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:25:50,008 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:25:50,009 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:25:50,009 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:25:50,010 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:25:50,010 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:25:50,010 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:25:50,011 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:25:50,011 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:25:50,033 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 18:25:50,046 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:25:50,046 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:25:50,046 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:25:50,047 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:25:50,047 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:25:50,047 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:25:50,047 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:25:50,047 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:25:50,055 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 77 transitions [2019-12-07 18:25:50,056 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 77 transitions [2019-12-07 18:25:50,088 INFO L134 PetriNetUnfolder]: 13/77 cut-off events. [2019-12-07 18:25:50,088 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:25:50,092 INFO L76 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 77 events. 13/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 175 event pairs. 19/82 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2019-12-07 18:25:50,096 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 77 transitions [2019-12-07 18:25:50,112 INFO L134 PetriNetUnfolder]: 13/77 cut-off events. [2019-12-07 18:25:50,113 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:25:50,114 INFO L76 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 77 events. 13/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 175 event pairs. 19/82 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2019-12-07 18:25:50,117 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1428 [2019-12-07 18:25:50,118 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 18:25:50,745 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3136 [2019-12-07 18:25:50,745 INFO L214 etLargeBlockEncoding]: Total number of compositions: 41 [2019-12-07 18:25:50,747 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 45 transitions [2019-12-07 18:25:50,777 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2019-12-07 18:25:50,779 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2019-12-07 18:25:50,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 18:25:50,784 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:25:50,785 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 18:25:50,785 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:25:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:25:50,791 INFO L82 PathProgramCache]: Analyzing trace with hash 307755311, now seen corresponding path program 1 times [2019-12-07 18:25:50,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:25:50,797 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709002152] [2019-12-07 18:25:50,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:25:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:25:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:25:50,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709002152] [2019-12-07 18:25:50,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:25:50,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:25:50,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226347313] [2019-12-07 18:25:50,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 18:25:50,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:25:50,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 18:25:50,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 18:25:50,910 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 2 states. [2019-12-07 18:25:50,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:25:50,933 INFO L93 Difference]: Finished difference Result 335 states and 891 transitions. [2019-12-07 18:25:50,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:25:50,934 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-12-07 18:25:50,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:25:50,946 INFO L225 Difference]: With dead ends: 335 [2019-12-07 18:25:50,946 INFO L226 Difference]: Without dead ends: 296 [2019-12-07 18:25:50,947 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 [2019-12-07 18:25:50,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2019-12-07 18:25:50,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2019-12-07 18:25:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2019-12-07 18:25:51,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 806 transitions. [2019-12-07 18:25:51,001 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 806 transitions. Word has length 5 [2019-12-07 18:25:51,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:25:51,002 INFO L462 AbstractCegarLoop]: Abstraction has 296 states and 806 transitions. [2019-12-07 18:25:51,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 18:25:51,002 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 806 transitions. [2019-12-07 18:25:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 18:25:51,003 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:25:51,003 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 18:25:51,003 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:25:51,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:25:51,003 INFO L82 PathProgramCache]: Analyzing trace with hash 950440607, now seen corresponding path program 1 times [2019-12-07 18:25:51,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:25:51,004 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749241210] [2019-12-07 18:25:51,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:25:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:25:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:25:51,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749241210] [2019-12-07 18:25:51,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:25:51,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:25:51,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98768518] [2019-12-07 18:25:51,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:25:51,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:25:51,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:25:51,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:25:51,046 INFO L87 Difference]: Start difference. First operand 296 states and 806 transitions. Second operand 3 states. [2019-12-07 18:25:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:25:51,071 INFO L93 Difference]: Finished difference Result 313 states and 813 transitions. [2019-12-07 18:25:51,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:25:51,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 18:25:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:25:51,074 INFO L225 Difference]: With dead ends: 313 [2019-12-07 18:25:51,074 INFO L226 Difference]: Without dead ends: 250 [2019-12-07 18:25:51,074 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:25:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-12-07 18:25:51,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 232. [2019-12-07 18:25:51,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2019-12-07 18:25:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 621 transitions. [2019-12-07 18:25:51,090 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 621 transitions. Word has length 6 [2019-12-07 18:25:51,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:25:51,090 INFO L462 AbstractCegarLoop]: Abstraction has 232 states and 621 transitions. [2019-12-07 18:25:51,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:25:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 621 transitions. [2019-12-07 18:25:51,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 18:25:51,091 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:25:51,091 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:25:51,091 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:25:51,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:25:51,091 INFO L82 PathProgramCache]: Analyzing trace with hash -863522724, now seen corresponding path program 1 times [2019-12-07 18:25:51,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:25:51,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492906603] [2019-12-07 18:25:51,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:25:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:25:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:25:51,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492906603] [2019-12-07 18:25:51,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:25:51,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:25:51,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172565940] [2019-12-07 18:25:51,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:25:51,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:25:51,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:25:51,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:25:51,121 INFO L87 Difference]: Start difference. First operand 232 states and 621 transitions. Second operand 3 states. [2019-12-07 18:25:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:25:51,136 INFO L93 Difference]: Finished difference Result 225 states and 583 transitions. [2019-12-07 18:25:51,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:25:51,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 18:25:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:25:51,138 INFO L225 Difference]: With dead ends: 225 [2019-12-07 18:25:51,138 INFO L226 Difference]: Without dead ends: 156 [2019-12-07 18:25:51,139 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:25:51,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-12-07 18:25:51,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2019-12-07 18:25:51,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-12-07 18:25:51,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 408 transitions. [2019-12-07 18:25:51,149 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 408 transitions. Word has length 8 [2019-12-07 18:25:51,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:25:51,149 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 408 transitions. [2019-12-07 18:25:51,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:25:51,150 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 408 transitions. [2019-12-07 18:25:51,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:25:51,151 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:25:51,151 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:25:51,152 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:25:51,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:25:51,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1690923042, now seen corresponding path program 1 times [2019-12-07 18:25:51,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:25:51,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247607479] [2019-12-07 18:25:51,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:25:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:25:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:25:51,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247607479] [2019-12-07 18:25:51,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:25:51,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:25:51,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488365069] [2019-12-07 18:25:51,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:25:51,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:25:51,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:25:51,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:25:51,185 INFO L87 Difference]: Start difference. First operand 156 states and 408 transitions. Second operand 3 states. [2019-12-07 18:25:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:25:51,196 INFO L93 Difference]: Finished difference Result 156 states and 398 transitions. [2019-12-07 18:25:51,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:25:51,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-07 18:25:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:25:51,198 INFO L225 Difference]: With dead ends: 156 [2019-12-07 18:25:51,198 INFO L226 Difference]: Without dead ends: 136 [2019-12-07 18:25:51,199 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 [2019-12-07 18:25:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-12-07 18:25:51,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2019-12-07 18:25:51,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-12-07 18:25:51,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 340 transitions. [2019-12-07 18:25:51,205 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 340 transitions. Word has length 11 [2019-12-07 18:25:51,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:25:51,205 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 340 transitions. [2019-12-07 18:25:51,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:25:51,206 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 340 transitions. [2019-12-07 18:25:51,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:25:51,207 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:25:51,207 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:25:51,207 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:25:51,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:25:51,208 INFO L82 PathProgramCache]: Analyzing trace with hash -535888112, now seen corresponding path program 2 times [2019-12-07 18:25:51,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:25:51,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029657526] [2019-12-07 18:25:51,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:25:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:25:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:25:51,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029657526] [2019-12-07 18:25:51,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:25:51,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:25:51,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835339038] [2019-12-07 18:25:51,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:25:51,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:25:51,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:25:51,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:25:51,238 INFO L87 Difference]: Start difference. First operand 136 states and 340 transitions. Second operand 3 states. [2019-12-07 18:25:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:25:51,247 INFO L93 Difference]: Finished difference Result 86 states and 251 transitions. [2019-12-07 18:25:51,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:25:51,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-07 18:25:51,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:25:51,248 INFO L225 Difference]: With dead ends: 86 [2019-12-07 18:25:51,248 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:25:51,248 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 [2019-12-07 18:25:51,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:25:51,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:25:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:25:51,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:25:51,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 18:25:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:25:51,249 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:25:51,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:25:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:25:51,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:25:51,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:25:51 BasicIcfg [2019-12-07 18:25:51,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:25:51,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:25:51,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:25:51,258 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:25:51,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:25:49" (3/4) ... [2019-12-07 18:25:51,262 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:25:51,266 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2019-12-07 18:25:51,266 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-12-07 18:25:51,269 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-12-07 18:25:51,269 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 18:25:51,269 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 18:25:51,298 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_22138c73-4c95-427a-bfec-9799619dde83/bin/uautomizer/witness.graphml [2019-12-07 18:25:51,298 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:25:51,300 INFO L168 Benchmark]: Toolchain (without parser) took 1924.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 932.7 MB in the beginning and 1.1 GB in the end (delta: -143.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:25:51,300 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:25:51,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 932.7 MB in the beginning and 1.1 GB in the end (delta: -131.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:25:51,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.12 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:25:51,302 INFO L168 Benchmark]: Boogie Preprocessor took 18.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:25:51,302 INFO L168 Benchmark]: RCFGBuilder took 220.35 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:25:51,303 INFO L168 Benchmark]: TraceAbstraction took 1286.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -48.4 MB). Peak memory consumption was 213.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:25:51,303 INFO L168 Benchmark]: Witness Printer took 39.85 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:25:51,306 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 325.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 932.7 MB in the beginning and 1.1 GB in the end (delta: -131.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.12 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.93 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 220.35 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1286.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -48.4 MB). Peak memory consumption was 213.3 MB. Max. memory is 11.5 GB. * Witness Printer took 39.85 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 70 ProgramPointsBefore, 39 ProgramPointsAfterwards, 77 TransitionsBefore, 45 TransitionsAfterwards, 1428 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 605 VarBasedMoverChecksPositive, 60 VarBasedMoverChecksNegative, 39 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 3136 CheckedPairsTotal, 41 TotalNumberOfCompositions - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 687]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 64 locations, 2 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 199 SDtfs, 82 SDslu, 68 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred 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, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 454 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...