./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/nested9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 041ac1710be6e1a9f4a6c44510c9851574d3d115 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:47:28,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:47:28,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:47:28,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:47:28,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:47:28,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:47:28,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:47:28,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:47:28,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:47:28,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:47:28,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:47:28,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:47:28,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:47:28,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:47:28,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:47:28,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:47:28,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:47:28,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:47:28,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:47:28,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:47:28,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:47:28,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:47:28,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:47:28,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:47:28,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:47:28,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:47:28,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:47:28,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:47:28,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:47:28,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:47:28,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:47:28,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:47:28,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:47:28,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:47:28,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:47:28,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:47:28,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:47:28,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:47:28,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:47:28,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:47:28,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:47:28,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:47:28,139 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:47:28,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:47:28,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:47:28,140 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:47:28,141 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:47:28,141 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:47:28,141 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:47:28,141 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:47:28,141 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:47:28,142 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:47:28,142 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:47:28,142 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:47:28,142 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:47:28,142 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:47:28,143 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:47:28,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:47:28,144 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:47:28,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:47:28,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:47:28,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:47:28,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:47:28,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:47:28,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:47:28,145 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:47:28,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:47:28,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:47:28,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:47:28,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:47:28,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:47:28,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:47:28,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:47:28,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:47:28,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:47:28,147 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:47:28,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:47:28,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:47:28,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:47:28,148 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan 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 -> Taipan 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 -> 041ac1710be6e1a9f4a6c44510c9851574d3d115 [2019-11-26 02:47:28,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:47:28,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:47:28,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:47:28,306 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:47:28,307 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:47:28,307 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/../../sv-benchmarks/c/loop-invgen/nested9.i [2019-11-26 02:47:28,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/data/c8d8cc1d1/cde2e81bcbd245fdbe4ad6c0315d11cc/FLAG73954dde7 [2019-11-26 02:47:28,772 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:47:28,773 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/sv-benchmarks/c/loop-invgen/nested9.i [2019-11-26 02:47:28,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/data/c8d8cc1d1/cde2e81bcbd245fdbe4ad6c0315d11cc/FLAG73954dde7 [2019-11-26 02:47:28,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/data/c8d8cc1d1/cde2e81bcbd245fdbe4ad6c0315d11cc [2019-11-26 02:47:28,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:47:28,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:47:28,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:47:28,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:47:28,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:47:28,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:47:28" (1/1) ... [2019-11-26 02:47:28,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc26540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:28, skipping insertion in model container [2019-11-26 02:47:28,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:47:28" (1/1) ... [2019-11-26 02:47:28,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:47:28,842 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:47:29,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:47:29,029 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:47:29,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:47:29,129 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:47:29,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:29 WrapperNode [2019-11-26 02:47:29,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:47:29,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:47:29,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:47:29,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:47:29,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:29" (1/1) ... [2019-11-26 02:47:29,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:29" (1/1) ... [2019-11-26 02:47:29,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:47:29,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:47:29,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:47:29,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:47:29,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:29" (1/1) ... [2019-11-26 02:47:29,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:29" (1/1) ... [2019-11-26 02:47:29,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:29" (1/1) ... [2019-11-26 02:47:29,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:29" (1/1) ... [2019-11-26 02:47:29,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:29" (1/1) ... [2019-11-26 02:47:29,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:29" (1/1) ... [2019-11-26 02:47:29,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:29" (1/1) ... [2019-11-26 02:47:29,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:47:29,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:47:29,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:47:29,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:47:29,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:47:29,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:47:29,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:47:29,538 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:47:29,538 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:47:29,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:47:29 BoogieIcfgContainer [2019-11-26 02:47:29,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:47:29,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:47:29,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:47:29,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:47:29,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:47:28" (1/3) ... [2019-11-26 02:47:29,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644b9224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:47:29, skipping insertion in model container [2019-11-26 02:47:29,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:29" (2/3) ... [2019-11-26 02:47:29,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644b9224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:47:29, skipping insertion in model container [2019-11-26 02:47:29,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:47:29" (3/3) ... [2019-11-26 02:47:29,546 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2019-11-26 02:47:29,555 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:47:29,561 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:47:29,571 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:47:29,591 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:47:29,604 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:47:29,604 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:47:29,605 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:47:29,605 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:47:29,605 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:47:29,605 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:47:29,605 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:47:29,618 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-26 02:47:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:47:29,632 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:47:29,633 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:47:29,634 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:47:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:47:29,639 INFO L82 PathProgramCache]: Analyzing trace with hash 262429726, now seen corresponding path program 1 times [2019-11-26 02:47:29,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:47:29,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153960228] [2019-11-26 02:47:29,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:47:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:47:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:47:29,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153960228] [2019-11-26 02:47:29,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:47:29,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:47:29,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765258878] [2019-11-26 02:47:29,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:47:29,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:47:29,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:47:29,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:47:29,880 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 6 states. [2019-11-26 02:47:30,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:47:30,113 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2019-11-26 02:47:30,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:47:30,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-26 02:47:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:47:30,122 INFO L225 Difference]: With dead ends: 41 [2019-11-26 02:47:30,122 INFO L226 Difference]: Without dead ends: 22 [2019-11-26 02:47:30,125 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:47:30,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-26 02:47:30,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2019-11-26 02:47:30,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-26 02:47:30,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-26 02:47:30,156 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-11-26 02:47:30,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:47:30,157 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-26 02:47:30,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:47:30,157 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-26 02:47:30,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:47:30,157 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:47:30,158 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:47:30,158 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:47:30,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:47:30,158 INFO L82 PathProgramCache]: Analyzing trace with hash -49415795, now seen corresponding path program 1 times [2019-11-26 02:47:30,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:47:30,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341570245] [2019-11-26 02:47:30,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:47:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:47:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:47:30,224 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341570245] [2019-11-26 02:47:30,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028221423] [2019-11-26 02:47:30,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/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 [2019-11-26 02:47:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:47:30,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:47:30,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:47:30,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:47:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:47:30,393 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:47:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:47:30,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:47:30,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 7] total 14 [2019-11-26 02:47:30,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082749765] [2019-11-26 02:47:30,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:47:30,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:47:30,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:47:30,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:47:30,478 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 7 states. [2019-11-26 02:47:30,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:47:30,605 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2019-11-26 02:47:30,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:47:30,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-11-26 02:47:30,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:47:30,606 INFO L225 Difference]: With dead ends: 28 [2019-11-26 02:47:30,606 INFO L226 Difference]: Without dead ends: 26 [2019-11-26 02:47:30,607 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:47:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-26 02:47:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2019-11-26 02:47:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-26 02:47:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-11-26 02:47:30,613 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 12 [2019-11-26 02:47:30,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:47:30,613 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-11-26 02:47:30,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:47:30,614 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-11-26 02:47:30,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 02:47:30,614 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:47:30,614 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:47:30,818 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:47:30,818 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:47:30,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:47:30,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1032707587, now seen corresponding path program 1 times [2019-11-26 02:47:30,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:47:30,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314424611] [2019-11-26 02:47:30,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:47:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:47:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:47:30,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314424611] [2019-11-26 02:47:30,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830377367] [2019-11-26 02:47:30,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/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 [2019-11-26 02:47:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:47:30,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:47:30,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:47:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:47:31,060 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:47:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:47:31,137 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1715354247] [2019-11-26 02:47:31,181 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-26 02:47:31,182 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:47:31,187 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:47:31,193 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:47:31,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:47:31,519 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:47:31,901 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-11-26 02:47:32,152 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2019-11-26 02:47:32,447 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2019-11-26 02:47:32,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:47:32,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 7, 7] total 24 [2019-11-26 02:47:32,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752649853] [2019-11-26 02:47:32,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:47:32,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:47:32,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:47:32,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2019-11-26 02:47:32,521 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 10 states. [2019-11-26 02:47:32,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:47:32,787 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2019-11-26 02:47:32,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 02:47:32,789 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2019-11-26 02:47:32,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:47:32,790 INFO L225 Difference]: With dead ends: 32 [2019-11-26 02:47:32,791 INFO L226 Difference]: Without dead ends: 30 [2019-11-26 02:47:32,791 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2019-11-26 02:47:32,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-26 02:47:32,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2019-11-26 02:47:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-26 02:47:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-11-26 02:47:32,798 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 15 [2019-11-26 02:47:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:47:32,799 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-11-26 02:47:32,799 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:47:32,799 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-11-26 02:47:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-26 02:47:32,800 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:47:32,800 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:47:33,000 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:47:33,001 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:47:33,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:47:33,001 INFO L82 PathProgramCache]: Analyzing trace with hash -487688392, now seen corresponding path program 1 times [2019-11-26 02:47:33,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:47:33,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834657721] [2019-11-26 02:47:33,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:47:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:47:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:47:33,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834657721] [2019-11-26 02:47:33,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903415297] [2019-11-26 02:47:33,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/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 [2019-11-26 02:47:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:47:33,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:47:33,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:47:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:47:33,222 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:47:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:47:33,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:47:33,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 6] total 14 [2019-11-26 02:47:33,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697252006] [2019-11-26 02:47:33,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:47:33,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:47:33,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:47:33,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:47:33,271 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-11-26 02:47:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:47:33,333 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2019-11-26 02:47:33,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:47:33,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-26 02:47:33,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:47:33,335 INFO L225 Difference]: With dead ends: 38 [2019-11-26 02:47:33,335 INFO L226 Difference]: Without dead ends: 29 [2019-11-26 02:47:33,335 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-11-26 02:47:33,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-26 02:47:33,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-11-26 02:47:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-26 02:47:33,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-11-26 02:47:33,343 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 17 [2019-11-26 02:47:33,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:47:33,343 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-26 02:47:33,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:47:33,343 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-11-26 02:47:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-26 02:47:33,344 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:47:33,344 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:47:33,547 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:47:33,548 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:47:33,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:47:33,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1039583688, now seen corresponding path program 2 times [2019-11-26 02:47:33,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:47:33,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320995947] [2019-11-26 02:47:33,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:47:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:47:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:47:33,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320995947] [2019-11-26 02:47:33,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320893996] [2019-11-26 02:47:33,650 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:47:33,675 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-26 02:47:33,675 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:47:33,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:47:33,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:47:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:47:33,720 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:47:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:47:33,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1935034534] [2019-11-26 02:47:33,757 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-26 02:47:33,757 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:47:33,757 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:47:33,758 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:47:33,758 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:47:34,190 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:47:34,803 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:47:34,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:47:34,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2019-11-26 02:47:34,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294374238] [2019-11-26 02:47:34,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-26 02:47:34,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:47:34,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-26 02:47:34,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2019-11-26 02:47:34,805 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 14 states. [2019-11-26 02:47:35,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:47:35,337 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2019-11-26 02:47:35,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-26 02:47:35,338 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2019-11-26 02:47:35,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:47:35,338 INFO L225 Difference]: With dead ends: 43 [2019-11-26 02:47:35,338 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:47:35,339 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2019-11-26 02:47:35,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:47:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:47:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:47:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:47:35,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-26 02:47:35,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:47:35,340 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:47:35,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-26 02:47:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:47:35,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:47:35,541 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:47:35,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:47:35,889 WARN L192 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-11-26 02:47:36,033 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2019-11-26 02:47:36,307 WARN L192 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-11-26 02:47:36,551 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2019-11-26 02:47:36,553 INFO L444 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-26 02:47:36,553 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:47:36,553 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-26 02:47:36,553 INFO L447 ceAbstractionStarter]: At program point L24(lines 11 26) the Hoare annotation is: true [2019-11-26 02:47:36,553 INFO L440 ceAbstractionStarter]: At program point L20-3(lines 20 23) the Hoare annotation is: (let ((.cse7 (* 2 ULTIMATE.start_main_~n~0))) (let ((.cse0 (< 0 (+ ULTIMATE.start_main_~l~0 1000000))) (.cse1 (<= 1 ULTIMATE.start_main_~i~0)) (.cse2 (< 0 (+ ULTIMATE.start_main_~m~0 1000000))) (.cse3 (< (* 2 ULTIMATE.start_main_~i~0) (+ .cse7 3))) (.cse4 (< ULTIMATE.start_main_~l~0 1000000)) (.cse5 (= ~__BLAST_NONDET~0 0)) (.cse6 (< ULTIMATE.start_main_~n~0 1000000)) (.cse8 (< ULTIMATE.start_main_~m~0 1000000))) (or (and .cse0 .cse1 .cse2 .cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse4 .cse5 .cse6 (< ULTIMATE.start_main_~j~0 (+ .cse7 ULTIMATE.start_main_~i~0 2)) .cse8) (and (<= ULTIMATE.start_main_~i~0 0) .cse0 (<= ~__BLAST_NONDET~0 0) .cse2 (<= 0 ~__BLAST_NONDET~0) (< 0 (+ ULTIMATE.start_main_~n~0 1000000)) .cse4 .cse6 (<= 0 ULTIMATE.start_main_~i~0) .cse8) (and .cse0 .cse1 .cse2 .cse3 (<= (+ ULTIMATE.start_main_~j~0 1) (+ ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~i~0)) .cse4 .cse5 .cse6 .cse8)))) [2019-11-26 02:47:36,553 INFO L444 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-11-26 02:47:36,554 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-26 02:47:36,554 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 1 26) the Hoare annotation is: (let ((.cse0 (< 0 (+ ULTIMATE.start_main_~l~0 1000000))) (.cse1 (< 0 (+ ULTIMATE.start_main_~m~0 1000000))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (< ULTIMATE.start_main_~l~0 1000000)) (.cse4 (= ~__BLAST_NONDET~0 0)) (.cse5 (< ULTIMATE.start_main_~j~0 (* 3 ULTIMATE.start_main_~i~0))) (.cse6 (< ULTIMATE.start_main_~n~0 1000000)) (.cse7 (< ULTIMATE.start_main_~m~0 1000000))) (or (and (<= ULTIMATE.start_main_~i~0 0) .cse0 (<= (+ (* 4 ULTIMATE.start_main_~i~0) 1) (+ ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0)) .cse1 (<= (+ (* 2 ULTIMATE.start_main_~j~0) 4) (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= 0 ULTIMATE.start_main_~i~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0) .cse7))) [2019-11-26 02:47:36,554 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:47:36,554 INFO L447 ceAbstractionStarter]: At program point L25(lines 11 26) the Hoare annotation is: true [2019-11-26 02:47:36,554 INFO L440 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (let ((.cse6 (* 2 ULTIMATE.start_main_~n~0)) (.cse8 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0)) (.cse0 (< 0 (+ ULTIMATE.start_main_~l~0 1000000))) (.cse1 (<= 1 ULTIMATE.start_main_~i~0)) (.cse2 (< 0 (+ ULTIMATE.start_main_~m~0 1000000))) (.cse10 (<= (+ ULTIMATE.start_main_~j~0 1) (+ ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~i~0))) (.cse3 (< ULTIMATE.start_main_~l~0 1000000)) (.cse4 (= ~__BLAST_NONDET~0 0)) (.cse5 (< ULTIMATE.start_main_~n~0 1000000)) (.cse7 (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0)) (.cse9 (< ULTIMATE.start_main_~m~0 1000000))) (or (and .cse0 .cse1 .cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 .cse4 .cse5 (< ULTIMATE.start_main_~j~0 (+ .cse6 ULTIMATE.start_main_~i~0 2)) .cse7 .cse8 .cse9) (and (<= ULTIMATE.start_main_~i~0 0) .cse0 (<= (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~n~0) .cse2 (<= (+ (* 4 ULTIMATE.start_main_~i~0) 1) (+ ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0)) .cse10 .cse3 .cse4 .cse5 (<= (+ (* 2 ULTIMATE.start_main_~j~0) 3) (+ .cse6 ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0)) .cse9 (<= 0 ULTIMATE.start_main_~i~0)) (and (<= (* 3 ULTIMATE.start_main_~n~0) (+ ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~l~0)) .cse3 .cse4 (= ULTIMATE.start_main_~i~0 0) .cse8 (= ULTIMATE.start_main_~j~0 (* ULTIMATE.start_main_~i~0 2)) .cse9) (and .cse0 .cse1 .cse2 .cse10 .cse3 .cse4 .cse5 .cse7 .cse9))) [2019-11-26 02:47:36,554 INFO L444 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-26 02:47:36,554 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-26 02:47:36,555 INFO L440 ceAbstractionStarter]: At program point L22-2(lines 22 23) the Hoare annotation is: (let ((.cse6 (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0)) (.cse0 (< 0 (+ ULTIMATE.start_main_~l~0 1000000))) (.cse1 (< 0 (+ ULTIMATE.start_main_~m~0 1000000))) (.cse8 (* 2 ULTIMATE.start_main_~j~0)) (.cse9 (+ (* 2 ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0)) (.cse2 (< ULTIMATE.start_main_~l~0 1000000)) (.cse3 (= ~__BLAST_NONDET~0 0)) (.cse4 (< ULTIMATE.start_main_~j~0 (* 3 ULTIMATE.start_main_~i~0))) (.cse5 (< ULTIMATE.start_main_~n~0 1000000)) (.cse7 (< ULTIMATE.start_main_~m~0 1000000))) (or (and .cse0 .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3 .cse4 .cse5 .cse6 (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0) .cse7) (and .cse0 .cse1 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~i~0) .cse2 .cse3 (<= (+ .cse8 2) .cse9) .cse4 .cse5 .cse6 .cse7) (and (<= ULTIMATE.start_main_~i~0 0) .cse0 (<= (+ (* 4 ULTIMATE.start_main_~i~0) 1) (+ ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0)) .cse1 (<= (+ .cse8 4) .cse9) .cse2 .cse3 .cse4 .cse5 .cse7 (<= 0 ULTIMATE.start_main_~i~0)))) [2019-11-26 02:47:36,555 INFO L444 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-26 02:47:36,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:47:36 BoogieIcfgContainer [2019-11-26 02:47:36,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:47:36,577 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:47:36,577 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:47:36,577 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:47:36,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:47:29" (3/4) ... [2019-11-26 02:47:36,580 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:47:36,588 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-26 02:47:36,588 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 02:47:36,635 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1f16cdc5-f20f-4b46-95a7-a1e2d3f2a6d5/bin/utaipan/witness.graphml [2019-11-26 02:47:36,635 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:47:36,636 INFO L168 Benchmark]: Toolchain (without parser) took 7833.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -140.9 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:47:36,637 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:47:36,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:47:36,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:47:36,638 INFO L168 Benchmark]: Boogie Preprocessor took 35.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:47:36,638 INFO L168 Benchmark]: RCFGBuilder took 335.74 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:47:36,639 INFO L168 Benchmark]: TraceAbstraction took 7036.07 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 46.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.2 MB). Peak memory consumption was 280.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:47:36,639 INFO L168 Benchmark]: Witness Printer took 58.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:47:36,641 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 323.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.74 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 35.23 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 335.74 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7036.07 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 46.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.2 MB). Peak memory consumption was 280.3 MB. Max. memory is 11.5 GB. * Witness Printer took 58.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((((((((0 < l + 1000000 && 1 <= i) && 0 < m + 1000000) && 2 * i < 2 * n + 3) && 1 == cond) && l < 1000000) && __BLAST_NONDET == 0) && n < 1000000) && j < 2 * n + i + 2) && m < 1000000) || (((((((((i <= 0 && 0 < l + 1000000) && __BLAST_NONDET <= 0) && 0 < m + 1000000) && 0 <= __BLAST_NONDET) && 0 < n + 1000000) && l < 1000000) && n < 1000000) && 0 <= i) && m < 1000000)) || ((((((((0 < l + 1000000 && 1 <= i) && 0 < m + 1000000) && 2 * i < 2 * n + 3) && j + 1 <= n + i) && l < 1000000) && __BLAST_NONDET == 0) && n < 1000000) && m < 1000000) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((((((((((i <= 0 && 0 < l + 1000000) && 4 * i + 1 <= n + j) && 0 < m + 1000000) && 2 * j + 4 <= 2 * n + i + k) && 1 == cond) && l < 1000000) && __BLAST_NONDET == 0) && j < 3 * i) && n < 1000000) && m < 1000000) && 0 <= i) || (((((((((0 < l + 1000000 && 0 < m + 1000000) && 1 == cond) && l < 1000000) && __BLAST_NONDET == 0) && j < 3 * i) && n < 1000000) && 2 * i <= j) && i < n) && m < 1000000) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((((((((((0 < l + 1000000 && 1 <= i) && 0 < m + 1000000) && 1 == cond) && l < 1000000) && __BLAST_NONDET == 0) && n < 1000000) && j < 2 * n + i + 2) && 2 * i <= j) && i < n) && m < 1000000) || (((((((((((i <= 0 && 0 < l + 1000000) && i + 2 <= n) && 0 < m + 1000000) && 4 * i + 1 <= n + j) && j + 1 <= n + i) && l < 1000000) && __BLAST_NONDET == 0) && n < 1000000) && 2 * j + 3 <= 2 * n + i + k) && m < 1000000) && 0 <= i)) || ((((((3 * n <= m + l && l < 1000000) && __BLAST_NONDET == 0) && i == 0) && i < n) && j == i * 2) && m < 1000000)) || ((((((((0 < l + 1000000 && 1 <= i) && 0 < m + 1000000) && j + 1 <= n + i) && l < 1000000) && __BLAST_NONDET == 0) && n < 1000000) && 2 * i <= j) && m < 1000000) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((((((((0 < l + 1000000 && 0 < m + 1000000) && 1 == cond) && l < 1000000) && __BLAST_NONDET == 0) && j < 3 * i) && n < 1000000) && 2 * i <= j) && i < n) && m < 1000000) || (((((((((0 < l + 1000000 && 0 < m + 1000000) && k <= i) && l < 1000000) && __BLAST_NONDET == 0) && 2 * j + 2 <= 2 * n + i + k) && j < 3 * i) && n < 1000000) && 2 * i <= j) && m < 1000000)) || ((((((((((i <= 0 && 0 < l + 1000000) && 4 * i + 1 <= n + j) && 0 < m + 1000000) && 2 * j + 4 <= 2 * n + i + k) && l < 1000000) && __BLAST_NONDET == 0) && j < 3 * i) && n < 1000000) && m < 1000000) && 0 <= i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 6.9s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, HoareTripleCheckerStatistics: 49 SDtfs, 139 SDslu, 132 SDs, 0 SdLazy, 336 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 111 SyntacticMatches, 6 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, 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, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 41 NumberOfFragments, 543 HoareAnnotationTreeSize, 6 FomulaSimplifications, 1716 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 1350 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 132 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 9969 SizeOfPredicates, 21 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 40/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 339, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 11, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 19, TOOLS_POST_TIME[ms]: 20, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 19, TOOLS_QUANTIFIERELIM_TIME[ms]: 14, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 3, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 38, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 122, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 101, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 14, DOMAIN_ISBOTTOM_APPLICATIONS: 11, DOMAIN_ISBOTTOM_TIME[ms]: 16, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 132, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 131, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 18, DAG_COMPRESSION_PROCESSED_NODES: 123, DAG_COMPRESSION_RETAINED_NODES: 38, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...