./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b2_o3.c --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_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b2_o3.c -s /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/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 f345f307410a5ddbdd0513896d69ca703c67be23 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:57:58,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:58,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:58,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:58,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:58,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:58,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:58,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:58,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:58,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:58,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:58,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:58,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:58,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:58,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:58,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:58,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:58,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:58,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:58,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:58,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:58,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:58,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:58,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:58,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:58,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:58,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:58,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:58,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:58,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:58,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:58,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:58,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:58,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:58,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:58,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:58,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:58,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:58,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:58,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:58,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:58,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:57:58,808 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:58,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:58,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:58,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:58,812 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:58,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:58,812 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:58,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:58,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:58,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:58,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:57:58,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:57:58,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:57:58,815 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:58,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:57:58,815 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:58,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:57:58,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:58,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:58,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:57:58,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:57:58,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:58,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:58,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:57:58,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:57:58,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:57:58,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:57:58,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:57:58,817 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_15ea23b2-2245-4c0b-9484-132d011c85c9/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 -> f345f307410a5ddbdd0513896d69ca703c67be23 [2019-10-22 08:57:58,850 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:58,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:58,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:58,867 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:58,867 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:58,868 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/id2_b2_o3.c [2019-10-22 08:57:58,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/data/9e67036ef/3795a8c1c2af42499a993f4b7ca5c037/FLAG96469fa91 [2019-10-22 08:57:59,292 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:59,293 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/sv-benchmarks/c/recursive-simple/id2_b2_o3.c [2019-10-22 08:57:59,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/data/9e67036ef/3795a8c1c2af42499a993f4b7ca5c037/FLAG96469fa91 [2019-10-22 08:57:59,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/data/9e67036ef/3795a8c1c2af42499a993f4b7ca5c037 [2019-10-22 08:57:59,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:59,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:57:59,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:59,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:59,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:59,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:59" (1/1) ... [2019-10-22 08:57:59,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14997bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59, skipping insertion in model container [2019-10-22 08:57:59,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:59" (1/1) ... [2019-10-22 08:57:59,325 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:59,340 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:59,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:59,505 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:59,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:59,624 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:59,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59 WrapperNode [2019-10-22 08:57:59,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:59,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:59,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:57:59,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:57:59,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59" (1/1) ... [2019-10-22 08:57:59,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59" (1/1) ... [2019-10-22 08:57:59,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:59,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:59,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:59,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:59,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59" (1/1) ... [2019-10-22 08:57:59,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59" (1/1) ... [2019-10-22 08:57:59,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59" (1/1) ... [2019-10-22 08:57:59,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59" (1/1) ... [2019-10-22 08:57:59,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59" (1/1) ... [2019-10-22 08:57:59,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59" (1/1) ... [2019-10-22 08:57:59,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59" (1/1) ... [2019-10-22 08:57:59,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:59,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:59,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:59,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:59,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/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 08:57:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2019-10-22 08:57:59,752 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2019-10-22 08:57:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:59,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-10-22 08:57:59,754 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-10-22 08:57:59,941 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:59,941 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 08:57:59,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:59 BoogieIcfgContainer [2019-10-22 08:57:59,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:59,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:57:59,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:57:59,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:57:59,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:57:59" (1/3) ... [2019-10-22 08:57:59,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf48d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:59, skipping insertion in model container [2019-10-22 08:57:59,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:59" (2/3) ... [2019-10-22 08:57:59,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf48d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:59, skipping insertion in model container [2019-10-22 08:57:59,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:59" (3/3) ... [2019-10-22 08:57:59,953 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2019-10-22 08:57:59,962 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:59,968 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:57:59,979 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:58:00,001 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:58:00,001 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:58:00,001 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:58:00,001 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:00,001 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:00,002 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:58:00,002 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:00,002 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:58:00,017 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-22 08:58:00,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 08:58:00,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:00,023 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:00,024 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:00,029 INFO L82 PathProgramCache]: Analyzing trace with hash -394807891, now seen corresponding path program 1 times [2019-10-22 08:58:00,037 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:00,038 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846758574] [2019-10-22 08:58:00,038 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,038 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,250 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 08:58:00,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846758574] [2019-10-22 08:58:00,252 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:00,252 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:58:00,252 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273160977] [2019-10-22 08:58:00,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:58:00,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:00,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:58:00,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:00,271 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-10-22 08:58:00,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:00,324 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-10-22 08:58:00,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:58:00,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-10-22 08:58:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:00,334 INFO L225 Difference]: With dead ends: 35 [2019-10-22 08:58:00,334 INFO L226 Difference]: Without dead ends: 22 [2019-10-22 08:58:00,336 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-22 08:58:00,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-22 08:58:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 08:58:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-22 08:58:00,376 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 9 [2019-10-22 08:58:00,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:00,377 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-22 08:58:00,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:00,377 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-22 08:58:00,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 08:58:00,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:00,379 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:00,379 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:00,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:00,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1343664860, now seen corresponding path program 1 times [2019-10-22 08:58:00,380 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:00,380 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212795316] [2019-10-22 08:58:00,380 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,380 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,492 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 08:58:00,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212795316] [2019-10-22 08:58:00,492 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:00,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:58:00,493 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38003245] [2019-10-22 08:58:00,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:58:00,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:00,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:58:00,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:00,495 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 5 states. [2019-10-22 08:58:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:00,512 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-10-22 08:58:00,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:58:00,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-22 08:58:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:00,514 INFO L225 Difference]: With dead ends: 28 [2019-10-22 08:58:00,514 INFO L226 Difference]: Without dead ends: 24 [2019-10-22 08:58:00,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:00,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-22 08:58:00,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-10-22 08:58:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 08:58:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-22 08:58:00,520 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2019-10-22 08:58:00,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:00,520 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-22 08:58:00,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-22 08:58:00,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 08:58:00,521 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:00,521 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:00,522 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:00,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:00,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1372294011, now seen corresponding path program 1 times [2019-10-22 08:58:00,522 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:00,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909250314] [2019-10-22 08:58:00,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,649 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 08:58:00,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909250314] [2019-10-22 08:58:00,649 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:00,649 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 08:58:00,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452459835] [2019-10-22 08:58:00,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:58:00,650 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:00,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:58:00,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:58:00,651 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2019-10-22 08:58:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:00,703 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2019-10-22 08:58:00,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:58:00,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-10-22 08:58:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:00,705 INFO L225 Difference]: With dead ends: 44 [2019-10-22 08:58:00,705 INFO L226 Difference]: Without dead ends: 28 [2019-10-22 08:58:00,705 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:58:00,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-22 08:58:00,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-10-22 08:58:00,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-22 08:58:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-10-22 08:58:00,710 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2019-10-22 08:58:00,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:00,711 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-10-22 08:58:00,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:58:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-10-22 08:58:00,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:58:00,712 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:00,712 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:00,712 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:00,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:00,712 INFO L82 PathProgramCache]: Analyzing trace with hash -971845561, now seen corresponding path program 1 times [2019-10-22 08:58:00,713 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:00,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47638918] [2019-10-22 08:58:00,713 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,713 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 08:58:00,849 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47638918] [2019-10-22 08:58:00,849 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:00,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:58:00,849 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443219889] [2019-10-22 08:58:00,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:58:00,855 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:00,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:58:00,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:00,856 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-10-22 08:58:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:00,885 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2019-10-22 08:58:00,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:58:00,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-10-22 08:58:00,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:00,888 INFO L225 Difference]: With dead ends: 46 [2019-10-22 08:58:00,888 INFO L226 Difference]: Without dead ends: 32 [2019-10-22 08:58:00,889 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:00,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-22 08:58:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-10-22 08:58:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 08:58:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-10-22 08:58:00,896 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 23 [2019-10-22 08:58:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:00,897 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-10-22 08:58:00,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-10-22 08:58:00,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:58:00,899 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:00,900 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:00,900 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:00,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1168359066, now seen corresponding path program 1 times [2019-10-22 08:58:00,900 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:00,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828604997] [2019-10-22 08:58:00,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:00,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:01,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 08:58:01,116 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828604997] [2019-10-22 08:58:01,116 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177790082] [2019-10-22 08:58:01,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:01,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-22 08:58:01,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 08:58:01,240 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:01,241 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-10-22 08:58:01,241 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598185356] [2019-10-22 08:58:01,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 08:58:01,241 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:01,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 08:58:01,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:58:01,245 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 12 states. [2019-10-22 08:58:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:01,361 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2019-10-22 08:58:01,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:58:01,362 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2019-10-22 08:58:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:01,363 INFO L225 Difference]: With dead ends: 62 [2019-10-22 08:58:01,363 INFO L226 Difference]: Without dead ends: 42 [2019-10-22 08:58:01,364 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:58:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-22 08:58:01,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2019-10-22 08:58:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 08:58:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-10-22 08:58:01,374 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 23 [2019-10-22 08:58:01,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:01,374 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-10-22 08:58:01,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 08:58:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-10-22 08:58:01,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 08:58:01,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:01,375 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:01,578 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:01,579 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:01,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:01,579 INFO L82 PathProgramCache]: Analyzing trace with hash -222974932, now seen corresponding path program 1 times [2019-10-22 08:58:01,579 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:01,579 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095291407] [2019-10-22 08:58:01,579 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:01,579 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:01,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 08:58:01,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095291407] [2019-10-22 08:58:01,814 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438435756] [2019-10-22 08:58:01,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:01,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-22 08:58:01,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 08:58:01,904 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:01,904 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-10-22 08:58:01,904 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541704516] [2019-10-22 08:58:01,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 08:58:01,905 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:01,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 08:58:01,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:58:01,905 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 12 states. [2019-10-22 08:58:02,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:02,005 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2019-10-22 08:58:02,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:58:02,006 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2019-10-22 08:58:02,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:02,007 INFO L225 Difference]: With dead ends: 66 [2019-10-22 08:58:02,007 INFO L226 Difference]: Without dead ends: 48 [2019-10-22 08:58:02,008 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:58:02,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-22 08:58:02,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2019-10-22 08:58:02,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-22 08:58:02,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2019-10-22 08:58:02,016 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 30 [2019-10-22 08:58:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:02,017 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-10-22 08:58:02,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 08:58:02,017 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2019-10-22 08:58:02,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 08:58:02,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:02,019 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:02,220 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:02,220 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:02,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:02,220 INFO L82 PathProgramCache]: Analyzing trace with hash -141607649, now seen corresponding path program 2 times [2019-10-22 08:58:02,220 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:02,221 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962842880] [2019-10-22 08:58:02,221 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:02,221 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:02,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-22 08:58:02,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962842880] [2019-10-22 08:58:02,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081146117] [2019-10-22 08:58:02,440 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:02,472 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:58:02,472 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:02,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 32 conjunts are in the unsatisfiable core [2019-10-22 08:58:02,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:02,567 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-22 08:58:02,567 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:02,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 15 [2019-10-22 08:58:02,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600476369] [2019-10-22 08:58:02,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 08:58:02,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:02,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 08:58:02,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:58:02,569 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 15 states. [2019-10-22 08:58:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:02,680 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2019-10-22 08:58:02,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:58:02,680 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2019-10-22 08:58:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:02,681 INFO L225 Difference]: With dead ends: 54 [2019-10-22 08:58:02,681 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:58:02,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2019-10-22 08:58:02,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:58:02,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:58:02,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:58:02,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:58:02,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-10-22 08:58:02,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:02,683 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:02,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 08:58:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:58:02,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:58:02,885 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:02,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:58:02,902 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-22 08:58:02,902 INFO L446 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: true [2019-10-22 08:58:02,902 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-10-22 08:58:02,902 INFO L443 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2019-10-22 08:58:02,902 INFO L443 ceAbstractionStarter]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2019-10-22 08:58:02,902 INFO L446 ceAbstractionStarter]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2019-10-22 08:58:02,903 INFO L443 ceAbstractionStarter]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2019-10-22 08:58:02,903 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:58:02,903 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:58:02,903 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:58:02,903 INFO L443 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-10-22 08:58:02,903 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-10-22 08:58:02,903 INFO L446 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: true [2019-10-22 08:58:02,903 INFO L443 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-10-22 08:58:02,904 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 27) no Hoare annotation was computed. [2019-10-22 08:58:02,904 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2019-10-22 08:58:02,904 INFO L443 ceAbstractionStarter]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2019-10-22 08:58:02,904 INFO L443 ceAbstractionStarter]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2019-10-22 08:58:02,904 INFO L443 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2019-10-22 08:58:02,904 INFO L446 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: true [2019-10-22 08:58:02,904 INFO L443 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2019-10-22 08:58:02,904 INFO L443 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-10-22 08:58:02,905 INFO L446 ceAbstractionStarter]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2019-10-22 08:58:02,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:58:02 BoogieIcfgContainer [2019-10-22 08:58:02,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:58:02,908 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:02,908 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:02,909 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:02,909 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:59" (3/4) ... [2019-10-22 08:58:02,912 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:58:02,919 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2019-10-22 08:58:02,920 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2019-10-22 08:58:02,924 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 08:58:02,924 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:58:02,966 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_15ea23b2-2245-4c0b-9484-132d011c85c9/bin/uautomizer/witness.graphml [2019-10-22 08:58:02,966 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:02,968 INFO L168 Benchmark]: Toolchain (without parser) took 3656.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 196.1 MB). Free memory was 944.7 MB in the beginning and 897.5 MB in the end (delta: 47.2 MB). Peak memory consumption was 243.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:02,968 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:02,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 196.1 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -246.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:02,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:02,969 INFO L168 Benchmark]: Boogie Preprocessor took 19.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:02,970 INFO L168 Benchmark]: RCFGBuilder took 267.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:02,970 INFO L168 Benchmark]: TraceAbstraction took 2963.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 897.5 MB in the end (delta: 267.4 MB). Peak memory consumption was 267.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:02,971 INFO L168 Benchmark]: Witness Printer took 57.82 ms. Allocated memory is still 1.2 GB. Free memory is still 897.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:02,972 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 315.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 196.1 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -246.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 267.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2963.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 897.5 MB in the end (delta: 267.4 MB). Peak memory consumption was 267.4 MB. Max. memory is 11.5 GB. * Witness Printer took 57.82 ms. Allocated memory is still 1.2 GB. Free memory is still 897.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 177 SDtfs, 23 SDslu, 1077 SDs, 0 SdLazy, 291 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 194 GetRequests, 133 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=6, 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, 7 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 5 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 21814 SizeOfPredicates, 10 NumberOfNonLiveVariables, 201 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 54/78 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...