./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test_union.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_45e2430d-a946-4f80-a0e1-055e023afa4b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_union.i -s /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/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 d175f2e77aebe63dd05869db0ed17fb7b8bf3540 ............................................................................................................................................................................................................................................................ 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 11:11:17,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:11:17,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:11:17,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:11:17,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:11:17,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:11:17,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:11:17,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:11:17,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:11:17,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:11:17,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:11:17,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:11:17,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:11:17,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:11:17,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:11:17,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:11:17,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:11:17,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:11:17,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:11:17,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:11:17,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:11:17,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:11:17,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:11:17,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:11:17,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:11:17,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:11:17,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:11:17,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:11:17,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:11:17,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:11:17,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:11:17,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:11:17,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:11:17,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:11:17,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:11:17,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:11:17,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:11:17,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:11:17,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:11:17,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:11:17,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:11:17,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 11:11:17,604 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:11:17,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:11:17,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:11:17,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:11:17,605 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:11:17,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:11:17,606 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:11:17,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:11:17,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:11:17,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:11:17,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 11:11:17,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:11:17,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 11:11:17,607 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:11:17,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 11:11:17,607 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:11:17,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 11:11:17,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:11:17,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:11:17,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:11:17,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:11:17,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:11:17,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:11:17,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:11:17,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 11:11:17,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 11:11:17,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 11:11:17,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 11:11:17,610 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_45e2430d-a946-4f80-a0e1-055e023afa4b/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 -> d175f2e77aebe63dd05869db0ed17fb7b8bf3540 [2019-11-20 11:11:17,772 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:11:17,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:11:17,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:11:17,790 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:11:17,790 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:11:17,791 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test_union.i [2019-11-20 11:11:17,854 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/bin/uautomizer/data/f3cbd9d55/135b0c91a17b4458b1b05623b3c1e316/FLAGce89ac85c [2019-11-20 11:11:18,240 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:11:18,241 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/sv-benchmarks/c/ldv-regression/test_union.i [2019-11-20 11:11:18,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/bin/uautomizer/data/f3cbd9d55/135b0c91a17b4458b1b05623b3c1e316/FLAGce89ac85c [2019-11-20 11:11:18,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/bin/uautomizer/data/f3cbd9d55/135b0c91a17b4458b1b05623b3c1e316 [2019-11-20 11:11:18,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:11:18,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 11:11:18,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:11:18,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:11:18,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:11:18,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:18" (1/1) ... [2019-11-20 11:11:18,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7edf95a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:18, skipping insertion in model container [2019-11-20 11:11:18,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:18" (1/1) ... [2019-11-20 11:11:18,705 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:11:18,724 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:11:18,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:11:18,904 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:11:18,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:11:19,023 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:11:19,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19 WrapperNode [2019-11-20 11:11:19,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:11:19,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 11:11:19,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 11:11:19,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 11:11:19,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19" (1/1) ... [2019-11-20 11:11:19,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19" (1/1) ... [2019-11-20 11:11:19,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 11:11:19,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:11:19,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:11:19,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:11:19,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19" (1/1) ... [2019-11-20 11:11:19,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19" (1/1) ... [2019-11-20 11:11:19,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19" (1/1) ... [2019-11-20 11:11:19,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19" (1/1) ... [2019-11-20 11:11:19,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19" (1/1) ... [2019-11-20 11:11:19,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19" (1/1) ... [2019-11-20 11:11:19,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19" (1/1) ... [2019-11-20 11:11:19,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:11:19,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:11:19,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:11:19,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:11:19,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/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 11:11:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 11:11:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:11:19,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:11:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 11:11:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 11:11:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 11:11:19,364 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:11:19,365 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 11:11:19,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:19 BoogieIcfgContainer [2019-11-20 11:11:19,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:11:19,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:11:19,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:11:19,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:11:19,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:11:18" (1/3) ... [2019-11-20 11:11:19,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a2b5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:11:19, skipping insertion in model container [2019-11-20 11:11:19,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19" (2/3) ... [2019-11-20 11:11:19,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a2b5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:11:19, skipping insertion in model container [2019-11-20 11:11:19,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:19" (3/3) ... [2019-11-20 11:11:19,374 INFO L109 eAbstractionObserver]: Analyzing ICFG test_union.i [2019-11-20 11:11:19,384 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:11:19,391 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 11:11:19,405 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 11:11:19,452 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:11:19,452 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 11:11:19,453 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:11:19,453 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:11:19,453 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:11:19,453 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:11:19,469 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:11:19,469 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:11:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-20 11:11:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 11:11:19,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:11:19,498 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 11:11:19,513 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:11:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:11:19,519 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-20 11:11:19,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:11:19,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60110731] [2019-11-20 11:11:19,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:11:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:11:19,750 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 11:11:19,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60110731] [2019-11-20 11:11:19,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:11:19,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 11:11:19,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993784245] [2019-11-20 11:11:19,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 11:11:19,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:11:19,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 11:11:19,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 11:11:19,776 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-20 11:11:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:11:19,793 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-11-20 11:11:19,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 11:11:19,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-20 11:11:19,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:11:19,803 INFO L225 Difference]: With dead ends: 13 [2019-11-20 11:11:19,803 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 11:11:19,808 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 11:11:19,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 11:11:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 11:11:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 11:11:19,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 11:11:19,845 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-11-20 11:11:19,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:11:19,846 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 11:11:19,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 11:11:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 11:11:19,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 11:11:19,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 11:11:19,855 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 11:11:19,855 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-20 11:11:19,856 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 11:11:19,856 INFO L444 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2019-11-20 11:11:19,856 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 11:11:19,856 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-20 11:11:19,856 INFO L444 ceAbstractionStarter]: For program point L23(lines 23 31) no Hoare annotation was computed. [2019-11-20 11:11:19,856 INFO L444 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-20 11:11:19,856 INFO L444 ceAbstractionStarter]: For program point L4(lines 1 31) no Hoare annotation was computed. [2019-11-20 11:11:19,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:11:19 BoogieIcfgContainer [2019-11-20 11:11:19,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:11:19,867 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:11:19,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:11:19,868 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:11:19,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:19" (3/4) ... [2019-11-20 11:11:19,873 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 11:11:19,890 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-20 11:11:19,891 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 11:11:19,891 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 11:11:19,939 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_45e2430d-a946-4f80-a0e1-055e023afa4b/bin/uautomizer/witness.graphml [2019-11-20 11:11:19,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:11:19,941 INFO L168 Benchmark]: Toolchain (without parser) took 1261.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -102.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 11.5 GB. [2019-11-20 11:11:19,942 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:11:19,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -147.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-20 11:11:19,943 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:11:19,944 INFO L168 Benchmark]: Boogie Preprocessor took 25.58 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:11:19,944 INFO L168 Benchmark]: RCFGBuilder took 275.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. [2019-11-20 11:11:19,945 INFO L168 Benchmark]: TraceAbstraction took 492.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-11-20 11:11:19,945 INFO L168 Benchmark]: Witness Printer took 72.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-20 11:11:19,949 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 341.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -147.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.58 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 275.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 492.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Witness Printer took 72.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 1 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, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...