./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/sync01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/sync01.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 993484b14586fce8c379b166a15b1fad6f27a8c2 .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 02:44:57,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 02:44:57,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 02:44:57,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 02:44:57,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 02:44:57,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 02:44:57,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 02:44:57,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 02:44:57,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 02:44:57,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 02:44:57,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 02:44:57,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 02:44:57,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 02:44:57,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 02:44:57,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 02:44:57,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 02:44:57,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 02:44:57,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 02:44:57,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 02:44:57,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 02:44:57,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 02:44:57,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 02:44:57,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 02:44:57,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 02:44:57,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 02:44:57,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 02:44:57,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 02:44:57,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 02:44:57,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 02:44:57,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 02:44:57,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 02:44:57,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 02:44:57,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 02:44:57,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 02:44:57,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 02:44:57,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 02:44:57,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 02:44:57,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 02:44:57,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 02:44:57,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 02:44:57,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 02:44:57,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 02:44:57,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 02:44:57,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 02:44:57,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 02:44:57,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 02:44:57,625 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 02:44:57,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 02:44:57,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 02:44:57,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 02:44:57,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 02:44:57,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 02:44:57,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 02:44:57,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 02:44:57,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 02:44:57,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 02:44:57,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 02:44:57,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 02:44:57,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 02:44:57,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 02:44:57,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 02:44:57,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 02:44:57,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 02:44:57,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:44:57,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 02:44:57,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 02:44:57,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 02:44:57,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 02:44:57,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 02:44:57,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 02:44:57,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 02:44:57,633 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 993484b14586fce8c379b166a15b1fad6f27a8c2 [2020-10-20 02:44:57,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 02:44:57,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 02:44:57,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 02:44:57,888 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 02:44:57,891 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 02:44:57,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/sync01.i [2020-10-20 02:44:57,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8cd19895/9ebf74ffc57d4ee68d9113a30b42410a/FLAGa8e2c5a02 [2020-10-20 02:44:58,615 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 02:44:58,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/sync01.i [2020-10-20 02:44:58,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8cd19895/9ebf74ffc57d4ee68d9113a30b42410a/FLAGa8e2c5a02 [2020-10-20 02:44:58,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8cd19895/9ebf74ffc57d4ee68d9113a30b42410a [2020-10-20 02:44:58,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 02:44:58,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 02:44:58,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 02:44:58,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 02:44:58,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 02:44:58,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:44:58" (1/1) ... [2020-10-20 02:44:58,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d78058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:58, skipping insertion in model container [2020-10-20 02:44:58,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:44:58" (1/1) ... [2020-10-20 02:44:58,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 02:44:58,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 02:44:59,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:44:59,410 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 02:44:59,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:44:59,667 INFO L208 MainTranslator]: Completed translation [2020-10-20 02:44:59,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:59 WrapperNode [2020-10-20 02:44:59,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 02:44:59,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 02:44:59,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 02:44:59,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 02:44:59,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:59" (1/1) ... [2020-10-20 02:44:59,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:59" (1/1) ... [2020-10-20 02:44:59,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 02:44:59,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 02:44:59,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 02:44:59,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 02:44:59,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:59" (1/1) ... [2020-10-20 02:44:59,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:59" (1/1) ... [2020-10-20 02:44:59,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:59" (1/1) ... [2020-10-20 02:44:59,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:59" (1/1) ... [2020-10-20 02:44:59,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:59" (1/1) ... [2020-10-20 02:44:59,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:59" (1/1) ... [2020-10-20 02:44:59,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:59" (1/1) ... [2020-10-20 02:44:59,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 02:44:59,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 02:44:59,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 02:44:59,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 02:44:59,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:44:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 02:44:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 02:44:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 02:44:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-20 02:44:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-20 02:44:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-10-20 02:44:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-10-20 02:44:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 02:44:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-20 02:44:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 02:44:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 02:44:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 02:44:59,954 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 02:45:00,680 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 02:45:00,680 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 02:45:00,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:00 BoogieIcfgContainer [2020-10-20 02:45:00,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 02:45:00,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 02:45:00,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 02:45:00,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 02:45:00,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 02:44:58" (1/3) ... [2020-10-20 02:45:00,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c821f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:45:00, skipping insertion in model container [2020-10-20 02:45:00,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:59" (2/3) ... [2020-10-20 02:45:00,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c821f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:45:00, skipping insertion in model container [2020-10-20 02:45:00,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:00" (3/3) ... [2020-10-20 02:45:00,696 INFO L111 eAbstractionObserver]: Analyzing ICFG sync01.i [2020-10-20 02:45:00,708 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 02:45:00,708 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 02:45:00,717 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 02:45:00,718 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 02:45:00,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,770 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,770 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,770 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,771 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,771 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,771 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,772 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,772 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,772 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,774 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,774 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,775 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,776 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,787 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,788 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,788 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,788 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,789 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,789 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,796 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,796 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,796 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,796 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,797 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,797 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,797 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:00,808 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-20 02:45:00,819 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 02:45:00,836 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 02:45:00,837 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 02:45:00,837 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 02:45:00,837 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 02:45:00,837 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 02:45:00,837 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 02:45:00,838 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 02:45:00,838 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 02:45:00,852 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 02:45:00,855 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 100 transitions, 222 flow [2020-10-20 02:45:00,858 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 100 transitions, 222 flow [2020-10-20 02:45:00,860 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 222 flow [2020-10-20 02:45:00,916 INFO L129 PetriNetUnfolder]: 7/100 cut-off events. [2020-10-20 02:45:00,916 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-20 02:45:00,923 INFO L80 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 100 events. 7/100 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2020-10-20 02:45:00,925 INFO L117 LiptonReduction]: Number of co-enabled transitions 840 [2020-10-20 02:45:03,033 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-20 02:45:03,138 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-20 02:45:03,428 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-20 02:45:03,639 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-20 02:45:04,042 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-20 02:45:04,404 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-20 02:45:05,425 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 181 DAG size of output: 169 [2020-10-20 02:45:05,900 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-20 02:45:05,910 INFO L132 LiptonReduction]: Checked pairs total: 3706 [2020-10-20 02:45:05,911 INFO L134 LiptonReduction]: Total number of compositions: 83 [2020-10-20 02:45:05,917 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 34 transitions, 90 flow [2020-10-20 02:45:05,936 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2020-10-20 02:45:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-10-20 02:45:05,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 02:45:05,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:05,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:05,951 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:05,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1987548451, now seen corresponding path program 1 times [2020-10-20 02:45:05,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:05,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609424751] [2020-10-20 02:45:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:06,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609424751] [2020-10-20 02:45:06,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:06,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:45:06,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347089300] [2020-10-20 02:45:06,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 02:45:06,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:06,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 02:45:06,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 02:45:06,193 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2020-10-20 02:45:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:06,219 INFO L93 Difference]: Finished difference Result 198 states and 455 transitions. [2020-10-20 02:45:06,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 02:45:06,220 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-10-20 02:45:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:06,236 INFO L225 Difference]: With dead ends: 198 [2020-10-20 02:45:06,236 INFO L226 Difference]: Without dead ends: 197 [2020-10-20 02:45:06,238 INFO L677 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 [2020-10-20 02:45:06,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-20 02:45:06,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2020-10-20 02:45:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-20 02:45:06,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 454 transitions. [2020-10-20 02:45:06,297 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 454 transitions. Word has length 15 [2020-10-20 02:45:06,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:06,298 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 454 transitions. [2020-10-20 02:45:06,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 02:45:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 454 transitions. [2020-10-20 02:45:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 02:45:06,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:06,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:06,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 02:45:06,302 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:06,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1186536217, now seen corresponding path program 1 times [2020-10-20 02:45:06,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:06,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295693698] [2020-10-20 02:45:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:06,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295693698] [2020-10-20 02:45:06,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:06,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:45:06,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149820714] [2020-10-20 02:45:06,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:45:06,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:06,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:45:06,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:06,462 INFO L87 Difference]: Start difference. First operand 197 states and 454 transitions. Second operand 3 states. [2020-10-20 02:45:06,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:06,486 INFO L93 Difference]: Finished difference Result 107 states and 223 transitions. [2020-10-20 02:45:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:45:06,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-20 02:45:06,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:06,489 INFO L225 Difference]: With dead ends: 107 [2020-10-20 02:45:06,489 INFO L226 Difference]: Without dead ends: 107 [2020-10-20 02:45:06,490 INFO L677 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 [2020-10-20 02:45:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-20 02:45:06,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-20 02:45:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-20 02:45:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 223 transitions. [2020-10-20 02:45:06,500 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 223 transitions. Word has length 21 [2020-10-20 02:45:06,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:06,500 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 223 transitions. [2020-10-20 02:45:06,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:45:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 223 transitions. [2020-10-20 02:45:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 02:45:06,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:06,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:06,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 02:45:06,503 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:06,504 INFO L82 PathProgramCache]: Analyzing trace with hash -128024041, now seen corresponding path program 2 times [2020-10-20 02:45:06,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:06,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80810891] [2020-10-20 02:45:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:06,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80810891] [2020-10-20 02:45:06,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:06,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 02:45:06,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792267423] [2020-10-20 02:45:06,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 02:45:06,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:06,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 02:45:06,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 02:45:06,618 INFO L87 Difference]: Start difference. First operand 107 states and 223 transitions. Second operand 5 states. [2020-10-20 02:45:06,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:06,718 INFO L93 Difference]: Finished difference Result 95 states and 177 transitions. [2020-10-20 02:45:06,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 02:45:06,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-20 02:45:06,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:06,720 INFO L225 Difference]: With dead ends: 95 [2020-10-20 02:45:06,720 INFO L226 Difference]: Without dead ends: 95 [2020-10-20 02:45:06,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 02:45:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-20 02:45:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-20 02:45:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-20 02:45:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 177 transitions. [2020-10-20 02:45:06,737 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 177 transitions. Word has length 21 [2020-10-20 02:45:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:06,739 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 177 transitions. [2020-10-20 02:45:06,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 02:45:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 177 transitions. [2020-10-20 02:45:06,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 02:45:06,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:06,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:06,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 02:45:06,741 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:06,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:06,742 INFO L82 PathProgramCache]: Analyzing trace with hash -436496159, now seen corresponding path program 3 times [2020-10-20 02:45:06,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:06,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072141433] [2020-10-20 02:45:06,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:06,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072141433] [2020-10-20 02:45:06,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:06,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 02:45:06,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561006766] [2020-10-20 02:45:06,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 02:45:06,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:06,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 02:45:06,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 02:45:06,890 INFO L87 Difference]: Start difference. First operand 95 states and 177 transitions. Second operand 7 states. [2020-10-20 02:45:06,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:06,963 INFO L93 Difference]: Finished difference Result 87 states and 155 transitions. [2020-10-20 02:45:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 02:45:06,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-20 02:45:06,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:06,965 INFO L225 Difference]: With dead ends: 87 [2020-10-20 02:45:06,965 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 02:45:06,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-20 02:45:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 02:45:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 02:45:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 02:45:06,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 02:45:06,966 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-20 02:45:06,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:06,966 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 02:45:06,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 02:45:06,967 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 02:45:06,967 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 02:45:06,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 02:45:06,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 02:45:06 BasicIcfg [2020-10-20 02:45:06,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 02:45:06,971 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 02:45:06,971 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 02:45:06,972 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 02:45:06,972 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:00" (3/4) ... [2020-10-20 02:45:06,976 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 02:45:06,984 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2020-10-20 02:45:06,984 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2020-10-20 02:45:06,989 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-20 02:45:06,989 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 02:45:06,990 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 02:45:06,990 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 02:45:07,049 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 02:45:07,050 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 02:45:07,051 INFO L168 Benchmark]: Toolchain (without parser) took 8137.15 ms. Allocated memory was 42.5 MB in the beginning and 80.7 MB in the end (delta: 38.3 MB). Free memory was 19.2 MB in the beginning and 29.4 MB in the end (delta: -10.2 MB). Peak memory consumption was 28.1 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:07,052 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 32.0 MB. Free memory was 9.1 MB in the beginning and 9.1 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 02:45:07,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 748.57 ms. Allocated memory was 42.5 MB in the beginning and 47.7 MB in the end (delta: 5.2 MB). Free memory was 18.3 MB in the beginning and 28.0 MB in the end (delta: -9.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:07,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.35 ms. Allocated memory is still 47.7 MB. Free memory was 28.0 MB in the beginning and 25.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:07,053 INFO L168 Benchmark]: Boogie Preprocessor took 72.15 ms. Allocated memory is still 47.7 MB. Free memory was 25.4 MB in the beginning and 23.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:07,054 INFO L168 Benchmark]: RCFGBuilder took 829.64 ms. Allocated memory is still 47.7 MB. Free memory was 23.7 MB in the beginning and 14.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:07,055 INFO L168 Benchmark]: TraceAbstraction took 6285.72 ms. Allocated memory was 47.7 MB in the beginning and 80.7 MB in the end (delta: 33.0 MB). Free memory was 13.5 MB in the beginning and 33.6 MB in the end (delta: -20.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:07,055 INFO L168 Benchmark]: Witness Printer took 78.30 ms. Allocated memory is still 80.7 MB. Free memory was 33.6 MB in the beginning and 29.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:07,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 32.0 MB. Free memory was 9.1 MB in the beginning and 9.1 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 748.57 ms. Allocated memory was 42.5 MB in the beginning and 47.7 MB in the end (delta: 5.2 MB). Free memory was 18.3 MB in the beginning and 28.0 MB in the end (delta: -9.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 111.35 ms. Allocated memory is still 47.7 MB. Free memory was 28.0 MB in the beginning and 25.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 72.15 ms. Allocated memory is still 47.7 MB. Free memory was 25.4 MB in the beginning and 23.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 829.64 ms. Allocated memory is still 47.7 MB. Free memory was 23.7 MB in the beginning and 14.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 6285.72 ms. Allocated memory was 47.7 MB in the beginning and 80.7 MB in the end (delta: 33.0 MB). Free memory was 13.5 MB in the beginning and 33.6 MB in the end (delta: -20.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. * Witness Printer took 78.30 ms. Allocated memory is still 80.7 MB. Free memory was 33.6 MB in the beginning and 29.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 606 VarBasedMoverChecksPositive, 71 VarBasedMoverChecksNegative, 36 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 212 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.0s, 99 PlacesBefore, 35 PlacesAfterwards, 100 TransitionsBefore, 34 TransitionsAfterwards, 840 CoEnabledTransitionPairs, 7 FixpointIterations, 52 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 83 TotalNumberOfCompositions, 3706 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 110 SDtfs, 78 SDslu, 141 SDs, 0 SdLazy, 70 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 3076 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...