./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/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 c08ad01fb17039d4f6c07f5a5bde8b7195d83520 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 16:26:21,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:26:21,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:26:21,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:26:21,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:26:21,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:26:21,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:26:21,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:26:21,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:26:21,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:26:21,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:26:21,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:26:21,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:26:21,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:26:21,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:26:21,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:26:21,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:26:21,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:26:21,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:26:21,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:26:21,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:26:21,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:26:21,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:26:21,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:26:21,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:26:21,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:26:21,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:26:21,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:26:21,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:26:21,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:26:21,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:26:21,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:26:21,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:26:21,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:26:21,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:26:21,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:26:21,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:26:21,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:26:21,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:26:21,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:26:21,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:26:21,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 16:26:21,702 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:26:21,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:26:21,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:26:21,703 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:26:21,703 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:26:21,703 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:26:21,703 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 16:26:21,703 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:26:21,703 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:26:21,703 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 16:26:21,704 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 16:26:21,704 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:26:21,704 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 16:26:21,704 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 16:26:21,704 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 16:26:21,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:26:21,705 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:26:21,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:26:21,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:26:21,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:26:21,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:26:21,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:26:21,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:26:21,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:26:21,706 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:26:21,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:26:21,706 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:26:21,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:26:21,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:26:21,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:26:21,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:26:21,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:26:21,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:26:21,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:26:21,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:26:21,707 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 16:26:21,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:26:21,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:26:21,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:26:21,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:26:21,708 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_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/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 -> c08ad01fb17039d4f6c07f5a5bde8b7195d83520 [2019-12-07 16:26:21,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:26:21,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:26:21,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:26:21,827 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:26:21,828 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:26:21,828 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/bin/utaipan/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-12-07 16:26:21,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/bin/utaipan/data/07a50ee7e/bb2906aa38d940959cd1b7ddad00b70f/FLAGe4e32bc6a [2019-12-07 16:26:22,218 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:26:22,218 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2019-12-07 16:26:22,223 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/bin/utaipan/data/07a50ee7e/bb2906aa38d940959cd1b7ddad00b70f/FLAGe4e32bc6a [2019-12-07 16:26:22,232 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/bin/utaipan/data/07a50ee7e/bb2906aa38d940959cd1b7ddad00b70f [2019-12-07 16:26:22,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:26:22,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:26:22,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:26:22,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:26:22,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:26:22,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:26:22" (1/1) ... [2019-12-07 16:26:22,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c1d0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22, skipping insertion in model container [2019-12-07 16:26:22,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:26:22" (1/1) ... [2019-12-07 16:26:22,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:26:22,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:26:22,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:26:22,456 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:26:22,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:26:22,507 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:26:22,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22 WrapperNode [2019-12-07 16:26:22,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:26:22,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:26:22,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:26:22,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:26:22,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22" (1/1) ... [2019-12-07 16:26:22,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22" (1/1) ... [2019-12-07 16:26:22,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:26:22,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:26:22,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:26:22,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:26:22,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22" (1/1) ... [2019-12-07 16:26:22,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22" (1/1) ... [2019-12-07 16:26:22,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22" (1/1) ... [2019-12-07 16:26:22,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22" (1/1) ... [2019-12-07 16:26:22,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22" (1/1) ... [2019-12-07 16:26:22,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22" (1/1) ... [2019-12-07 16:26:22,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22" (1/1) ... [2019-12-07 16:26:22,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:26:22,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:26:22,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:26:22,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:26:22,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/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 [2019-12-07 16:26:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 16:26:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-12-07 16:26:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-07 16:26:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 16:26:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:26:22,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:26:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 16:26:22,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:26:22,989 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:26:22,989 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 16:26:22,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:26:22 BoogieIcfgContainer [2019-12-07 16:26:22,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:26:22,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:26:22,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:26:22,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:26:22,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:26:22" (1/3) ... [2019-12-07 16:26:22,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47763a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:26:22, skipping insertion in model container [2019-12-07 16:26:22,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:26:22" (2/3) ... [2019-12-07 16:26:22,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47763a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:26:22, skipping insertion in model container [2019-12-07 16:26:22,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:26:22" (3/3) ... [2019-12-07 16:26:22,995 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2019-12-07 16:26:23,001 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:26:23,006 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 16:26:23,013 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 16:26:23,027 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:26:23,028 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:26:23,028 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:26:23,028 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:26:23,028 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:26:23,028 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:26:23,028 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:26:23,028 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:26:23,036 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-12-07 16:26:23,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 16:26:23,040 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:26:23,041 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:26:23,041 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:26:23,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:26:23,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1202647943, now seen corresponding path program 1 times [2019-12-07 16:26:23,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:26:23,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484438679] [2019-12-07 16:26:23,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:26:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:26:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:26:23,250 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484438679] [2019-12-07 16:26:23,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:26:23,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 16:26:23,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132361180] [2019-12-07 16:26:23,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:26:23,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:26:23,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:26:23,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:26:23,264 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-12-07 16:26:23,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:26:23,306 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2019-12-07 16:26:23,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:26:23,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-07 16:26:23,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:26:23,314 INFO L225 Difference]: With dead ends: 27 [2019-12-07 16:26:23,314 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 16:26:23,316 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:26:23,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 16:26:23,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2019-12-07 16:26:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 16:26:23,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-12-07 16:26:23,338 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2019-12-07 16:26:23,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:26:23,338 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-12-07 16:26:23,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:26:23,338 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-12-07 16:26:23,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 16:26:23,338 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:26:23,338 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:26:23,339 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:26:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:26:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash 507664458, now seen corresponding path program 1 times [2019-12-07 16:26:23,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:26:23,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698076196] [2019-12-07 16:26:23,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:26:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:26:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:26:23,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698076196] [2019-12-07 16:26:23,440 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826430676] [2019-12-07 16:26:23,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/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 [2019-12-07 16:26:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:26:23,538 INFO L264 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 16:26:23,543 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:26:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:26:23,568 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:26:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:26:23,596 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1581518106] [2019-12-07 16:26:23,612 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-12-07 16:26:23,613 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 16:26:23,617 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 16:26:23,621 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 16:26:23,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 16:26:40,776 WARN L192 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 937 [2019-12-07 16:26:55,442 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 976 [2019-12-07 16:26:55,952 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 1003 [2019-12-07 16:26:56,415 WARN L192 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 1000 [2019-12-07 16:26:56,932 WARN L192 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 1041 [2019-12-07 16:26:57,734 WARN L192 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 1077 [2019-12-07 16:26:58,152 WARN L192 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 1077 [2019-12-07 16:26:58,230 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 16:26:58,365 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2019-12-07 16:26:58,527 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2019-12-07 16:26:58,905 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2019-12-07 16:26:59,089 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2019-12-07 16:26:59,138 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 16:26:59,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 16:26:59,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2019-12-07 16:26:59,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856136736] [2019-12-07 16:26:59,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 16:26:59,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:26:59,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 16:26:59,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-12-07 16:26:59,141 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 9 states. [2019-12-07 16:26:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:26:59,311 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2019-12-07 16:26:59,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 16:26:59,311 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2019-12-07 16:26:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:26:59,312 INFO L225 Difference]: With dead ends: 33 [2019-12-07 16:26:59,312 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 16:26:59,313 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2019-12-07 16:26:59,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 16:26:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-12-07 16:26:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 16:26:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-12-07 16:26:59,317 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 12 [2019-12-07 16:26:59,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:26:59,317 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-12-07 16:26:59,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 16:26:59,317 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-12-07 16:26:59,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 16:26:59,318 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:26:59,318 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2019-12-07 16:26:59,519 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:26:59,520 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:26:59,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:26:59,520 INFO L82 PathProgramCache]: Analyzing trace with hash -522733127, now seen corresponding path program 2 times [2019-12-07 16:26:59,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:26:59,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462986761] [2019-12-07 16:26:59,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:26:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:26:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:26:59,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462986761] [2019-12-07 16:26:59,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445475982] [2019-12-07 16:26:59,635 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/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 [2019-12-07 16:26:59,759 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 16:26:59,759 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 16:26:59,761 INFO L264 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-07 16:26:59,764 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:26:59,805 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-12-07 16:26:59,872 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-12-07 16:26:59,872 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:27:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-12-07 16:27:00,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2026498834] [2019-12-07 16:27:00,110 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-12-07 16:27:00,110 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 16:27:00,110 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 16:27:00,110 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 16:27:00,110 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 16:28:06,970 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 937 [2019-12-07 16:28:28,529 WARN L192 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 976 [2019-12-07 16:28:28,998 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 997 [2019-12-07 16:28:29,452 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 994 [2019-12-07 16:28:29,967 WARN L192 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1035 [2019-12-07 16:28:30,491 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 1071 [2019-12-07 16:28:30,831 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 1071 [2019-12-07 16:28:30,880 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 16:28:31,042 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2019-12-07 16:28:31,221 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2019-12-07 16:28:31,674 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2019-12-07 16:28:31,884 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2019-12-07 16:28:32,129 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 16:28:32,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 16:28:32,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2019-12-07 16:28:32,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883672341] [2019-12-07 16:28:32,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-12-07 16:28:32,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:28:32,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-12-07 16:28:32,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2019-12-07 16:28:32,131 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 20 states. [2019-12-07 16:28:32,718 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2019-12-07 16:28:33,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:28:33,047 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2019-12-07 16:28:33,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-07 16:28:33,049 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2019-12-07 16:28:33,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:28:33,050 INFO L225 Difference]: With dead ends: 39 [2019-12-07 16:28:33,050 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 16:28:33,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2019-12-07 16:28:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 16:28:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 16:28:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 16:28:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 16:28:33,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-12-07 16:28:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:28:33,054 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:28:33,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-12-07 16:28:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 16:28:33,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 16:28:33,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:28:33,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 16:28:33,455 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 40 [2019-12-07 16:28:33,457 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 16:28:33,457 INFO L246 CegarLoopResult]: For program point L159(lines 159 234) no Hoare annotation was computed. [2019-12-07 16:28:33,457 INFO L246 CegarLoopResult]: For program point L188(lines 188 206) no Hoare annotation was computed. [2019-12-07 16:28:33,457 INFO L246 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2019-12-07 16:28:33,457 INFO L246 CegarLoopResult]: For program point L217(lines 217 225) no Hoare annotation was computed. [2019-12-07 16:28:33,457 INFO L246 CegarLoopResult]: For program point L180(lines 180 227) no Hoare annotation was computed. [2019-12-07 16:28:33,457 INFO L246 CegarLoopResult]: For program point L178(lines 178 232) no Hoare annotation was computed. [2019-12-07 16:28:33,457 INFO L246 CegarLoopResult]: For program point L195(lines 195 205) no Hoare annotation was computed. [2019-12-07 16:28:33,457 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 16:28:33,457 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 219) no Hoare annotation was computed. [2019-12-07 16:28:33,458 INFO L242 CegarLoopResult]: At program point L200(lines 165 233) the Hoare annotation is: (let ((.cse0 (= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset|)) (.cse1 (= 0 (select (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492))))) (or (and .cse0 (= ~Id_MCDC_93~0 0) .cse1 (= 0 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0)) (let ((.cse2 (mod (+ ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296))) (and (< .cse2 42) (< (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296) 42) .cse0 (not (= 492 (* .cse2 12))) .cse1 (< (mod ~Id_MCDC_93~0 4294967296) 42))) (and (<= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 1) .cse0 .cse1 (<= 1 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) (<= ~Id_MCDC_93~0 1) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1))))) [2019-12-07 16:28:33,458 INFO L249 CegarLoopResult]: At program point L231(lines 131 235) the Hoare annotation is: true [2019-12-07 16:28:33,465 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:28:33,466 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:28:33,466 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:28:33,470 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:28:33,470 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:28:33,470 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:28:33,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:28:33 BoogieIcfgContainer [2019-12-07 16:28:33,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:28:33,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:28:33,472 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:28:33,472 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:28:33,473 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:26:22" (3/4) ... [2019-12-07 16:28:33,475 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 16:28:33,486 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2019-12-07 16:28:33,487 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 16:28:33,487 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 16:28:33,488 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 16:28:33,488 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 16:28:33,614 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_11cd160d-fc3a-4ca8-b0a9-fab3abfaf7fb/bin/utaipan/witness.graphml [2019-12-07 16:28:33,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:28:33,615 INFO L168 Benchmark]: Toolchain (without parser) took 131380.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.2 MB). Free memory was 944.7 MB in the beginning and 936.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 228.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:28:33,615 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:28:33,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -129.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:28:33,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:28:33,616 INFO L168 Benchmark]: Boogie Preprocessor took 32.18 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:28:33,616 INFO L168 Benchmark]: RCFGBuilder took 408.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 981.8 MB in the end (delta: 81.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:28:33,616 INFO L168 Benchmark]: TraceAbstraction took 130481.40 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 981.8 MB in the beginning and 1.0 GB in the end (delta: -27.8 MB). Peak memory consumption was 106.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:28:33,616 INFO L168 Benchmark]: Witness Printer took 141.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 936.6 MB in the end (delta: 73.0 MB). Peak memory consumption was 73.0 MB. Max. memory is 11.5 GB. [2019-12-07 16:28:33,618 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -129.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.18 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 408.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 981.8 MB in the end (delta: 81.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 130481.40 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 981.8 MB in the beginning and 1.0 GB in the end (delta: -27.8 MB). Peak memory consumption was 106.4 MB. Max. memory is 11.5 GB. * Witness Printer took 141.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 936.6 MB in the end (delta: 73.0 MB). Peak memory consumption was 73.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 219]: 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: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 165]: Loop Invariant [2019-12-07 16:28:33,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:28:33,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:28:33,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:28:33,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:28:33,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:28:33,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((0 == Id_MCDC_89__Id_MCDC_95 && Id_MCDC_93 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 == Id_MCDC_89__Id_MCDC_96) || ((((((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42 && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && 0 == Id_MCDC_89__Id_MCDC_95) && !(492 == (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 * 12)) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && Id_MCDC_93 % 4294967296 < 42)) || (((((Id_MCDC_89__Id_MCDC_96 <= 1 && 0 == Id_MCDC_89__Id_MCDC_95) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 1 <= Id_MCDC_89__Id_MCDC_96) && Id_MCDC_93 <= 1) && 0 < Id_MCDC_93 / 4294967296 + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 130.2s, OverallIterations: 3, TraceHistogramMax: 5, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 18 SDtfs, 142 SDslu, 32 SDs, 0 SdLazy, 230 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 81 SyntacticMatches, 13 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 11 NumberOfFragments, 92 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 249 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 85 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 117 ConstructedInterpolants, 16 QuantifiedInterpolants, 29967 SizeOfPredicates, 13 NumberOfNonLiveVariables, 756 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 45/135 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...