./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/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 b5f5081a79a52fea970666bdbaa0bec9706e6a67 ......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 09:58:22,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:58:22,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:58:22,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:58:22,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:58:22,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:58:22,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:58:22,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:58:22,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:58:22,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:58:22,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:58:22,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:58:22,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:58:22,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:58:22,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:58:22,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:58:22,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:58:22,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:58:22,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:58:22,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:58:22,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:58:22,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:58:22,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:58:22,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:58:22,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:58:22,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:58:22,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:58:22,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:58:22,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:58:22,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:58:22,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:58:22,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:58:22,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:58:22,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:58:22,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:58:22,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:58:22,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:58:22,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:58:22,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:58:22,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:58:22,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:58:22,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 09:58:22,758 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:58:22,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:58:22,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:58:22,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:58:22,760 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:58:22,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:58:22,760 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:58:22,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:58:22,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:58:22,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:58:22,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 09:58:22,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 09:58:22,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 09:58:22,762 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:58:22,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:58:22,762 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:58:22,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 09:58:22,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:58:22,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:58:22,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 09:58:22,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 09:58:22,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 09:58:22,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:58:22,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 09:58:22,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 09:58:22,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 09:58:22,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 09:58:22,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 09:58:22,765 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_482a5d61-73c0-4d81-950a-3a2b78c48a7c/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 -> b5f5081a79a52fea970666bdbaa0bec9706e6a67 [2019-11-20 09:58:22,923 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:58:22,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:58:22,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:58:22,940 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:58:22,940 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:58:22,942 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i [2019-11-20 09:58:23,010 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/bin/uautomizer/data/cc42672f6/dfa33674372045b4afe4932f0842e340/FLAG2354c5115 [2019-11-20 09:58:23,391 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:58:23,393 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i [2019-11-20 09:58:23,399 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/bin/uautomizer/data/cc42672f6/dfa33674372045b4afe4932f0842e340/FLAG2354c5115 [2019-11-20 09:58:23,736 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/bin/uautomizer/data/cc42672f6/dfa33674372045b4afe4932f0842e340 [2019-11-20 09:58:23,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:58:23,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:58:23,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:58:23,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:58:23,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:58:23,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:58:23" (1/1) ... [2019-11-20 09:58:23,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77cdaae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:23, skipping insertion in model container [2019-11-20 09:58:23,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:58:23" (1/1) ... [2019-11-20 09:58:23,756 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:58:23,773 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:58:23,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:58:23,997 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:58:24,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:58:24,106 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:58:24,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:24 WrapperNode [2019-11-20 09:58:24,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:58:24,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:58:24,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:58:24,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:58:24,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:24" (1/1) ... [2019-11-20 09:58:24,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:24" (1/1) ... [2019-11-20 09:58:24,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:58:24,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:58:24,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:58:24,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:58:24,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:24" (1/1) ... [2019-11-20 09:58:24,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:24" (1/1) ... [2019-11-20 09:58:24,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:24" (1/1) ... [2019-11-20 09:58:24,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:24" (1/1) ... [2019-11-20 09:58:24,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:24" (1/1) ... [2019-11-20 09:58:24,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:24" (1/1) ... [2019-11-20 09:58:24,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:24" (1/1) ... [2019-11-20 09:58:24,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:58:24,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:58:24,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:58:24,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:58:24,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 09:58:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 09:58:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:58:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:58:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 09:58:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 09:58:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 09:58:24,476 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:58:24,476 INFO L285 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-20 09:58:24,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:58:24 BoogieIcfgContainer [2019-11-20 09:58:24,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:58:24,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 09:58:24,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 09:58:24,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 09:58:24,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:58:23" (1/3) ... [2019-11-20 09:58:24,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414557f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:58:24, skipping insertion in model container [2019-11-20 09:58:24,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:24" (2/3) ... [2019-11-20 09:58:24,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414557f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:58:24, skipping insertion in model container [2019-11-20 09:58:24,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:58:24" (3/3) ... [2019-11-20 09:58:24,486 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.c_1.i [2019-11-20 09:58:24,496 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 09:58:24,503 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-20 09:58:24,515 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-20 09:58:24,539 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 09:58:24,540 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 09:58:24,540 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 09:58:24,540 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:58:24,540 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:58:24,540 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 09:58:24,540 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:58:24,541 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 09:58:24,555 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-20 09:58:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 09:58:24,561 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:58:24,561 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 09:58:24,562 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:58:24,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:58:24,570 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-20 09:58:24,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:58:24,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923719773] [2019-11-20 09:58:24,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:58:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:58:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:58:24,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923719773] [2019-11-20 09:58:24,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:58:24,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 09:58:24,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713356220] [2019-11-20 09:58:24,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 09:58:24,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:58:24,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 09:58:24,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 09:58:24,739 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-20 09:58:24,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:58:24,763 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-11-20 09:58:24,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 09:58:24,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-20 09:58:24,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:58:24,772 INFO L225 Difference]: With dead ends: 25 [2019-11-20 09:58:24,772 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 09:58:24,774 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 09:58:24,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 09:58:24,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 09:58:24,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 09:58:24,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-11-20 09:58:24,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2019-11-20 09:58:24,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:58:24,805 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-11-20 09:58:24,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 09:58:24,805 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-11-20 09:58:24,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 09:58:24,805 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 09:58:24,806 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:58:24,806 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 09:58:24,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:58:24,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1810629644, now seen corresponding path program 1 times [2019-11-20 09:58:24,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:58:24,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026565713] [2019-11-20 09:58:24,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:58:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:58:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:58:24,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026565713] [2019-11-20 09:58:24,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:58:24,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 09:58:24,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279290982] [2019-11-20 09:58:24,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 09:58:24,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:58:24,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 09:58:24,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 09:58:24,896 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand 5 states. [2019-11-20 09:58:24,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:58:24,952 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-11-20 09:58:24,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 09:58:24,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-20 09:58:24,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 09:58:24,953 INFO L225 Difference]: With dead ends: 8 [2019-11-20 09:58:24,953 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 09:58:24,954 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 09:58:24,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 09:58:24,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 09:58:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 09:58:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 09:58:24,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-20 09:58:24,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 09:58:24,956 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 09:58:24,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 09:58:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 09:58:24,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 09:58:24,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 09:58:24,965 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 09:58:24,966 INFO L444 ceAbstractionStarter]: For program point L31(lines 31 43) no Hoare annotation was computed. [2019-11-20 09:58:24,966 INFO L444 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2019-11-20 09:58:24,966 INFO L444 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-11-20 09:58:24,966 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-11-20 09:58:24,966 INFO L444 ceAbstractionStarter]: For program point L25(lines 25 29) no Hoare annotation was computed. [2019-11-20 09:58:24,967 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-20 09:58:24,967 INFO L444 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-11-20 09:58:24,967 INFO L444 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-11-20 09:58:24,967 INFO L444 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-20 09:58:24,967 INFO L444 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-20 09:58:24,968 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-20 09:58:24,968 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 09:58:24,968 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 09:58:24,968 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-11-20 09:58:24,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:58:24 BoogieIcfgContainer [2019-11-20 09:58:24,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 09:58:24,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 09:58:24,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 09:58:24,973 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 09:58:24,974 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:58:24" (3/4) ... [2019-11-20 09:58:24,978 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 09:58:24,993 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-20 09:58:24,993 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 09:58:24,994 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 09:58:25,033 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_482a5d61-73c0-4d81-950a-3a2b78c48a7c/bin/uautomizer/witness.graphml [2019-11-20 09:58:25,034 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 09:58:25,036 INFO L168 Benchmark]: Toolchain (without parser) took 1295.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -139.4 MB). Peak memory consumption was 616.5 kB. Max. memory is 11.5 GB. [2019-11-20 09:58:25,036 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:58:25,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:25,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:58:25,038 INFO L168 Benchmark]: Boogie Preprocessor took 18.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:25,039 INFO L168 Benchmark]: RCFGBuilder took 311.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:25,039 INFO L168 Benchmark]: TraceAbstraction took 492.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:25,040 INFO L168 Benchmark]: Witness Printer took 61.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:58:25,042 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 366.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 311.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 492.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 61.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 13]: 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 1 procedures, 15 locations, 2 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 3 SDslu, 16 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...