./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/mutex_lock_int.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_1867b853-3fa7-434c-b696-94dbac4f75e9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_int.c_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/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 893a1dbd0a599f9a69d980cdd7a0c124f8071b90 ......................................................................................................................................................................................................................................................................................................... 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 05:19:50,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:19:50,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:19:50,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:19:50,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:19:50,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:19:50,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:19:50,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:19:50,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:19:50,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:19:50,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:19:50,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:19:50,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:19:50,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:19:50,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:19:50,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:19:50,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:19:50,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:19:50,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:19:50,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:19:50,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:19:50,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:19:50,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:19:50,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:19:50,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:19:50,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:19:50,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:19:50,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:19:50,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:19:50,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:19:50,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:19:50,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:19:50,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:19:50,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:19:50,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:19:50,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:19:50,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:19:50,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:19:50,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:19:50,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:19:50,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:19:50,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 05:19:50,834 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:19:50,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:19:50,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:19:50,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:19:50,844 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:19:50,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:19:50,844 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:19:50,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:19:50,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:19:50,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:19:50,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:19:50,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:19:50,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:19:50,846 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:19:50,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:19:50,846 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:19:50,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:19:50,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:19:50,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:19:50,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:19:50,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:19:50,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:19:50,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:19:50,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:19:50,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:19:50,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:19:50,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:19:50,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:19:50,848 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_1867b853-3fa7-434c-b696-94dbac4f75e9/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 -> 893a1dbd0a599f9a69d980cdd7a0c124f8071b90 [2019-11-20 05:19:50,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:19:50,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:19:50,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:19:50,989 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:19:50,990 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:19:50,990 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/mutex_lock_int.c_1.i [2019-11-20 05:19:51,039 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/bin/uautomizer/data/65a67e83b/f6daf4ef045b472592c77411829922e7/FLAGff2de3dd2 [2019-11-20 05:19:51,389 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:19:51,390 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/sv-benchmarks/c/ldv-regression/mutex_lock_int.c_1.i [2019-11-20 05:19:51,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/bin/uautomizer/data/65a67e83b/f6daf4ef045b472592c77411829922e7/FLAGff2de3dd2 [2019-11-20 05:19:51,758 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/bin/uautomizer/data/65a67e83b/f6daf4ef045b472592c77411829922e7 [2019-11-20 05:19:51,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:19:51,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:19:51,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:19:51,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:19:51,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:19:51,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:19:51" (1/1) ... [2019-11-20 05:19:51,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@460caa81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:51, skipping insertion in model container [2019-11-20 05:19:51,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:19:51" (1/1) ... [2019-11-20 05:19:51,789 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:19:51,803 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:19:52,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:19:52,023 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:19:52,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:19:52,114 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:19:52,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:52 WrapperNode [2019-11-20 05:19:52,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:19:52,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:19:52,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:19:52,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:19:52,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:52" (1/1) ... [2019-11-20 05:19:52,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:52" (1/1) ... [2019-11-20 05:19:52,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:19:52,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:19:52,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:19:52,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:19:52,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:52" (1/1) ... [2019-11-20 05:19:52,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:52" (1/1) ... [2019-11-20 05:19:52,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:52" (1/1) ... [2019-11-20 05:19:52,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:52" (1/1) ... [2019-11-20 05:19:52,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:52" (1/1) ... [2019-11-20 05:19:52,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:52" (1/1) ... [2019-11-20 05:19:52,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:52" (1/1) ... [2019-11-20 05:19:52,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:19:52,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:19:52,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:19:52,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:19:52,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/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 05:19:52,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 05:19:52,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:19:52,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:19:52,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 05:19:52,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 05:19:52,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:19:52,384 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:19:52,384 INFO L285 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-20 05:19:52,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:19:52 BoogieIcfgContainer [2019-11-20 05:19:52,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:19:52,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:19:52,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:19:52,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:19:52,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:19:51" (1/3) ... [2019-11-20 05:19:52,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89a297a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:19:52, skipping insertion in model container [2019-11-20 05:19:52,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:19:52" (2/3) ... [2019-11-20 05:19:52,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89a297a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:19:52, skipping insertion in model container [2019-11-20 05:19:52,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:19:52" (3/3) ... [2019-11-20 05:19:52,402 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.c_1.i [2019-11-20 05:19:52,410 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:19:52,415 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-20 05:19:52,424 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-20 05:19:52,452 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:19:52,452 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:19:52,452 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:19:52,452 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:19:52,453 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:19:52,453 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:19:52,453 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:19:52,453 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:19:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-20 05:19:52,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 05:19:52,480 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:19:52,481 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 05:19:52,481 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:19:52,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:19:52,487 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-20 05:19:52,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:19:52,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626629264] [2019-11-20 05:19:52,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:19:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:19:52,620 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 05:19:52,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626629264] [2019-11-20 05:19:52,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:19:52,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 05:19:52,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64882069] [2019-11-20 05:19:52,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:19:52,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:19:52,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:19:52,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:19:52,637 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-20 05:19:52,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:19:52,651 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-11-20 05:19:52,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:19:52,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-20 05:19:52,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:19:52,660 INFO L225 Difference]: With dead ends: 25 [2019-11-20 05:19:52,660 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 05:19:52,663 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 05:19:52,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 05:19:52,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 05:19:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 05:19:52,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-11-20 05:19:52,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2019-11-20 05:19:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:19:52,684 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-11-20 05:19:52,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:19:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-11-20 05:19:52,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 05:19:52,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:19:52,685 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:19:52,685 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:19:52,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:19:52,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1810629644, now seen corresponding path program 1 times [2019-11-20 05:19:52,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:19:52,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121938444] [2019-11-20 05:19:52,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:19:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:19:52,752 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 05:19:52,752 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121938444] [2019-11-20 05:19:52,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:19:52,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 05:19:52,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128144874] [2019-11-20 05:19:52,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 05:19:52,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:19:52,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 05:19:52,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:19:52,754 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand 5 states. [2019-11-20 05:19:52,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:19:52,799 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-11-20 05:19:52,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 05:19:52,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-20 05:19:52,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:19:52,799 INFO L225 Difference]: With dead ends: 8 [2019-11-20 05:19:52,799 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 05:19:52,800 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 05:19:52,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 05:19:52,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 05:19:52,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 05:19:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 05:19:52,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-20 05:19:52,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:19:52,801 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:19:52,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 05:19:52,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 05:19:52,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 05:19:52,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 05:19:52,807 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 05:19:52,807 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2019-11-20 05:19:52,807 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-20 05:19:52,807 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 05:19:52,807 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 05:19:52,807 INFO L444 ceAbstractionStarter]: For program point L28(lines 28 40) no Hoare annotation was computed. [2019-11-20 05:19:52,807 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2019-11-20 05:19:52,808 INFO L444 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-11-20 05:19:52,808 INFO L444 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2019-11-20 05:19:52,808 INFO L444 ceAbstractionStarter]: For program point L22(lines 22 26) no Hoare annotation was computed. [2019-11-20 05:19:52,808 INFO L444 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-20 05:19:52,808 INFO L444 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-11-20 05:19:52,808 INFO L444 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-11-20 05:19:52,808 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-20 05:19:52,809 INFO L444 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-11-20 05:19:52,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:19:52 BoogieIcfgContainer [2019-11-20 05:19:52,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:19:52,812 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:19:52,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:19:52,812 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:19:52,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:19:52" (3/4) ... [2019-11-20 05:19:52,816 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 05:19:52,825 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-20 05:19:52,825 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 05:19:52,826 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 05:19:52,863 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1867b853-3fa7-434c-b696-94dbac4f75e9/bin/uautomizer/witness.graphml [2019-11-20 05:19:52,863 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:19:52,865 INFO L168 Benchmark]: Toolchain (without parser) took 1103.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -148.3 MB). Peak memory consumption was 641.8 kB. Max. memory is 11.5 GB. [2019-11-20 05:19:52,865 INFO L168 Benchmark]: CDTParser took 0.18 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 05:19:52,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -201.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:19:52,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.38 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 05:19:52,867 INFO L168 Benchmark]: Boogie Preprocessor took 17.75 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 05:19:52,867 INFO L168 Benchmark]: RCFGBuilder took 216.41 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:19:52,868 INFO L168 Benchmark]: TraceAbstraction took 425.53 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-11-20 05:19:52,868 INFO L168 Benchmark]: Witness Printer took 51.29 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 05:19:52,870 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 356.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -201.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.38 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 17.75 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. * RCFGBuilder took 216.41 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 425.53 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 51.29 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: 14]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 14]: 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: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, 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, 0.0s 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...