./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/sanfoundry_24-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/sanfoundry_24-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/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 9633849a7b58c2c6c6845d63f4474af8185fd385 ..................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:13,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:13,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:13,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:13,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:13,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:13,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:13,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:13,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:13,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:13,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:13,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:13,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:13,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:13,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:13,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:13,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:13,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:13,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:13,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:13,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:13,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:13,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:13,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:13,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:13,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:13,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:13,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:13,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:13,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:13,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:13,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:13,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:13,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:13,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:13,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:13,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:13,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:13,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:13,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:13,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:13,786 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:55:13,796 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:13,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:13,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:13,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:13,798 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:13,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:13,798 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:13,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:13,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:13,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:13,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:13,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:13,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:13,799 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:13,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:13,799 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:13,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:13,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:13,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:13,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:13,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:13,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:13,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:13,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:13,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:13,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:13,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:13,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:13,801 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/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/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 -> 9633849a7b58c2c6c6845d63f4474af8185fd385 [2019-10-22 08:55:13,828 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:13,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:13,849 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:13,850 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:13,851 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:13,851 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/bin/uautomizer/../../sv-benchmarks/c/array-examples/sanfoundry_24-1.i [2019-10-22 08:55:13,909 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/bin/uautomizer/data/bc05679d8/ede8c874b75342b0917ff4d2d991c7e4/FLAG4a97839cf [2019-10-22 08:55:14,290 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:14,291 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/sv-benchmarks/c/array-examples/sanfoundry_24-1.i [2019-10-22 08:55:14,295 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/bin/uautomizer/data/bc05679d8/ede8c874b75342b0917ff4d2d991c7e4/FLAG4a97839cf [2019-10-22 08:55:14,305 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/bin/uautomizer/data/bc05679d8/ede8c874b75342b0917ff4d2d991c7e4 [2019-10-22 08:55:14,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:14,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:14,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:14,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:14,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:14,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:14" (1/1) ... [2019-10-22 08:55:14,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79338882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14, skipping insertion in model container [2019-10-22 08:55:14,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:14" (1/1) ... [2019-10-22 08:55:14,323 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:14,337 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:14,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:14,469 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:14,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:14,561 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:14,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14 WrapperNode [2019-10-22 08:55:14,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:14,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:14,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:14,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:14,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14" (1/1) ... [2019-10-22 08:55:14,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14" (1/1) ... [2019-10-22 08:55:14,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:14,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:14,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:14,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:14,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14" (1/1) ... [2019-10-22 08:55:14,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14" (1/1) ... [2019-10-22 08:55:14,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14" (1/1) ... [2019-10-22 08:55:14,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14" (1/1) ... [2019-10-22 08:55:14,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14" (1/1) ... [2019-10-22 08:55:14,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14" (1/1) ... [2019-10-22 08:55:14,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14" (1/1) ... [2019-10-22 08:55:14,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:14,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:14,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:14,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:14,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/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 [2019-10-22 08:55:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:55:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:14,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:55:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:55:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:55:14,941 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:14,941 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-10-22 08:55:14,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:14 BoogieIcfgContainer [2019-10-22 08:55:14,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:14,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:14,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:14,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:14,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:14" (1/3) ... [2019-10-22 08:55:14,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3362490a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:14, skipping insertion in model container [2019-10-22 08:55:14,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:14" (2/3) ... [2019-10-22 08:55:14,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3362490a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:14, skipping insertion in model container [2019-10-22 08:55:14,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:14" (3/3) ... [2019-10-22 08:55:14,963 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2019-10-22 08:55:14,983 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:14,997 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 08:55:15,010 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 08:55:15,035 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:15,036 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:15,036 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:15,036 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:15,036 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:15,037 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:15,037 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:15,037 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-22 08:55:15,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 08:55:15,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:15,065 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:15,068 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:15,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:15,073 INFO L82 PathProgramCache]: Analyzing trace with hash 212104336, now seen corresponding path program 1 times [2019-10-22 08:55:15,081 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:15,082 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065870801] [2019-10-22 08:55:15,083 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:15,083 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:15,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:15,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065870801] [2019-10-22 08:55:15,299 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:15,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:55:15,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690763804] [2019-10-22 08:55:15,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:55:15,304 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:15,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:15,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:15,315 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2019-10-22 08:55:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:15,413 INFO L93 Difference]: Finished difference Result 68 states and 97 transitions. [2019-10-22 08:55:15,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:55:15,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-10-22 08:55:15,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:15,424 INFO L225 Difference]: With dead ends: 68 [2019-10-22 08:55:15,424 INFO L226 Difference]: Without dead ends: 36 [2019-10-22 08:55:15,427 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:15,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-22 08:55:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22. [2019-10-22 08:55:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 08:55:15,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-22 08:55:15,460 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 8 [2019-10-22 08:55:15,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:15,460 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-22 08:55:15,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:55:15,461 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-22 08:55:15,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:55:15,461 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:15,461 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:15,462 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:15,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:15,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1436002194, now seen corresponding path program 1 times [2019-10-22 08:55:15,462 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:15,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095744970] [2019-10-22 08:55:15,463 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:15,463 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:15,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:55:15,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095744970] [2019-10-22 08:55:15,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:15,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:15,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289606310] [2019-10-22 08:55:15,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:55:15,584 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:15,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:55:15,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:15,588 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2019-10-22 08:55:15,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:15,678 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2019-10-22 08:55:15,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:15,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 08:55:15,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:15,679 INFO L225 Difference]: With dead ends: 29 [2019-10-22 08:55:15,680 INFO L226 Difference]: Without dead ends: 27 [2019-10-22 08:55:15,680 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-22 08:55:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2019-10-22 08:55:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 08:55:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-22 08:55:15,684 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 10 [2019-10-22 08:55:15,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:15,684 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-22 08:55:15,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:55:15,685 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-22 08:55:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:55:15,685 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:15,685 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:15,685 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:15,686 INFO L82 PathProgramCache]: Analyzing trace with hash 906460810, now seen corresponding path program 1 times [2019-10-22 08:55:15,686 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:15,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69080507] [2019-10-22 08:55:15,686 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:15,687 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:15,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 08:55:15,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69080507] [2019-10-22 08:55:15,817 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:15,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:15,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820412347] [2019-10-22 08:55:15,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:55:15,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:15,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:55:15,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:15,818 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 4 states. [2019-10-22 08:55:15,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:15,894 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2019-10-22 08:55:15,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:15,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-22 08:55:15,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:15,895 INFO L225 Difference]: With dead ends: 27 [2019-10-22 08:55:15,895 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:55:15,896 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:15,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:55:15,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:55:15,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:55:15,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:55:15,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-10-22 08:55:15,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:15,897 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:15,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:55:15,897 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:15,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:55:15,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:55:15,917 INFO L443 ceAbstractionStarter]: For program point L23(lines 23 26) no Hoare annotation was computed. [2019-10-22 08:55:15,917 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-10-22 08:55:15,917 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-10-22 08:55:15,917 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-10-22 08:55:15,917 INFO L443 ceAbstractionStarter]: For program point L3-3(lines 1 36) no Hoare annotation was computed. [2019-10-22 08:55:15,917 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 08:55:15,918 INFO L443 ceAbstractionStarter]: For program point L3-4(line 3) no Hoare annotation was computed. [2019-10-22 08:55:15,918 INFO L443 ceAbstractionStarter]: For program point L3-5(line 3) no Hoare annotation was computed. [2019-10-22 08:55:15,918 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:55:15,918 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:55:15,918 INFO L443 ceAbstractionStarter]: For program point L3-7(lines 1 36) no Hoare annotation was computed. [2019-10-22 08:55:15,918 INFO L443 ceAbstractionStarter]: For program point L28-2(lines 28 34) no Hoare annotation was computed. [2019-10-22 08:55:15,918 INFO L446 ceAbstractionStarter]: At program point L28-3(lines 28 34) the Hoare annotation is: true [2019-10-22 08:55:15,920 INFO L443 ceAbstractionStarter]: For program point L28-4(lines 28 34) no Hoare annotation was computed. [2019-10-22 08:55:15,920 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2019-10-22 08:55:15,920 INFO L446 ceAbstractionStarter]: At program point L16-3(lines 16 19) the Hoare annotation is: true [2019-10-22 08:55:15,920 INFO L443 ceAbstractionStarter]: For program point L16-4(lines 16 19) no Hoare annotation was computed. [2019-10-22 08:55:15,920 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:55:15,920 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2019-10-22 08:55:15,920 INFO L446 ceAbstractionStarter]: At program point L21-3(lines 21 27) the Hoare annotation is: true [2019-10-22 08:55:15,921 INFO L443 ceAbstractionStarter]: For program point L21-4(lines 21 27) no Hoare annotation was computed. [2019-10-22 08:55:15,921 INFO L443 ceAbstractionStarter]: For program point L30(lines 30 33) no Hoare annotation was computed. [2019-10-22 08:55:15,921 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-10-22 08:55:15,921 INFO L446 ceAbstractionStarter]: At program point L35(lines 10 36) the Hoare annotation is: true [2019-10-22 08:55:15,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:15 BoogieIcfgContainer [2019-10-22 08:55:15,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:15,930 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:15,930 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:15,931 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:15,931 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:14" (3/4) ... [2019-10-22 08:55:15,934 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:55:15,946 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-10-22 08:55:15,947 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:55:15,947 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 08:55:15,993 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_744bc783-020b-4e4f-ad46-42be5b6a4274/bin/uautomizer/witness.graphml [2019-10-22 08:55:15,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:15,995 INFO L168 Benchmark]: Toolchain (without parser) took 1686.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 944.5 MB in the beginning and 1.0 GB in the end (delta: -105.0 MB). Peak memory consumption was 43.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:15,996 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:15,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -201.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:15,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.00 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. [2019-10-22 08:55:15,997 INFO L168 Benchmark]: Boogie Preprocessor took 22.94 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. [2019-10-22 08:55:15,997 INFO L168 Benchmark]: RCFGBuilder took 323.68 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:15,998 INFO L168 Benchmark]: TraceAbstraction took 986.98 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: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:15,998 INFO L168 Benchmark]: Witness Printer took 63.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:16,000 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 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -201.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.00 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 22.94 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 323.68 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 986.98 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: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 11.5 GB. * Witness Printer took 63.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: 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 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 2 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 55 SDslu, 71 SDs, 0 SdLazy, 95 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 3 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 776 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 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...