./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/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 d2a071cc6090a217f48ed180b566a651717a8e39 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/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 d2a071cc6090a217f48ed180b566a651717a8e39 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 03:08:24,671 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 03:08:24,672 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 03:08:24,681 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 03:08:24,681 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 03:08:24,682 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 03:08:24,683 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 03:08:24,684 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 03:08:24,685 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 03:08:24,686 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 03:08:24,686 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 03:08:24,686 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 03:08:24,687 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 03:08:24,688 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 03:08:24,688 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 03:08:24,689 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 03:08:24,689 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 03:08:24,691 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 03:08:24,692 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 03:08:24,693 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 03:08:24,694 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 03:08:24,695 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 03:08:24,696 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 03:08:24,697 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 03:08:24,697 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 03:08:24,697 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 03:08:24,698 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 03:08:24,699 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 03:08:24,699 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 03:08:24,700 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 03:08:24,700 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 03:08:24,701 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 03:08:24,701 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 03:08:24,701 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 03:08:24,702 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 03:08:24,702 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 03:08:24,702 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 03:08:24,713 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 03:08:24,713 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 03:08:24,714 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 03:08:24,714 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 03:08:24,714 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 03:08:24,714 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 03:08:24,715 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 03:08:24,715 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 03:08:24,715 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 03:08:24,715 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 03:08:24,715 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 03:08:24,716 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 03:08:24,716 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 03:08:24,716 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 03:08:24,716 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 03:08:24,716 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 03:08:24,716 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 03:08:24,716 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 03:08:24,717 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 03:08:24,717 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 03:08:24,717 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 03:08:24,717 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 03:08:24,717 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 03:08:24,717 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 03:08:24,717 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 03:08:24,718 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 03:08:24,718 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:08:24,718 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 03:08:24,718 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 03:08:24,718 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 03:08:24,718 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 03:08:24,718 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 03:08:24,719 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 03:08:24,719 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 03:08:24,719 INFO L133 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/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/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 -> d2a071cc6090a217f48ed180b566a651717a8e39 [2018-11-10 03:08:24,742 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 03:08:24,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 03:08:24,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 03:08:24,757 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 03:08:24,757 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 03:08:24,757 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/../../sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i [2018-11-10 03:08:24,804 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/data/5764bb658/463efef622d9483ab2e5583c5b256b4d/FLAG2666a1afb [2018-11-10 03:08:25,153 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 03:08:25,153 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i [2018-11-10 03:08:25,157 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/data/5764bb658/463efef622d9483ab2e5583c5b256b4d/FLAG2666a1afb [2018-11-10 03:08:25,168 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/data/5764bb658/463efef622d9483ab2e5583c5b256b4d [2018-11-10 03:08:25,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 03:08:25,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 03:08:25,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 03:08:25,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 03:08:25,175 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 03:08:25,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:08:25" (1/1) ... [2018-11-10 03:08:25,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680a2912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25, skipping insertion in model container [2018-11-10 03:08:25,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:08:25" (1/1) ... [2018-11-10 03:08:25,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 03:08:25,201 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 03:08:25,309 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:08:25,312 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 03:08:25,323 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:08:25,333 INFO L193 MainTranslator]: Completed translation [2018-11-10 03:08:25,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25 WrapperNode [2018-11-10 03:08:25,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 03:08:25,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 03:08:25,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 03:08:25,335 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 03:08:25,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25" (1/1) ... [2018-11-10 03:08:25,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25" (1/1) ... [2018-11-10 03:08:25,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 03:08:25,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 03:08:25,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 03:08:25,353 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 03:08:25,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25" (1/1) ... [2018-11-10 03:08:25,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25" (1/1) ... [2018-11-10 03:08:25,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25" (1/1) ... [2018-11-10 03:08:25,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25" (1/1) ... [2018-11-10 03:08:25,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25" (1/1) ... [2018-11-10 03:08:25,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25" (1/1) ... [2018-11-10 03:08:25,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25" (1/1) ... [2018-11-10 03:08:25,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 03:08:25,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 03:08:25,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 03:08:25,371 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 03:08:25,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/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 [2018-11-10 03:08:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 03:08:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 03:08:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 03:08:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 03:08:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 03:08:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 03:08:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 03:08:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 03:08:25,560 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 03:08:25,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:08:25 BoogieIcfgContainer [2018-11-10 03:08:25,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 03:08:25,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 03:08:25,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 03:08:25,564 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 03:08:25,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:08:25" (1/3) ... [2018-11-10 03:08:25,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76dce9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:08:25, skipping insertion in model container [2018-11-10 03:08:25,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:25" (2/3) ... [2018-11-10 03:08:25,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76dce9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:08:25, skipping insertion in model container [2018-11-10 03:08:25,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:08:25" (3/3) ... [2018-11-10 03:08:25,567 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_1_true-unreach-call_true-no-overflow.i [2018-11-10 03:08:25,573 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 03:08:25,578 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 03:08:25,587 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 03:08:25,606 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 03:08:25,606 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 03:08:25,606 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 03:08:25,606 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 03:08:25,606 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 03:08:25,606 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 03:08:25,606 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 03:08:25,607 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 03:08:25,621 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-10 03:08:25,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 03:08:25,625 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:25,626 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:25,627 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:25,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:25,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2008095039, now seen corresponding path program 1 times [2018-11-10 03:08:25,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:08:25,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:25,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:25,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:25,664 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:08:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:25,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:08:25,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 03:08:25,699 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 03:08:25,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 03:08:25,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 03:08:25,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:08:25,713 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-10 03:08:25,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:25,728 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-10 03:08:25,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 03:08:25,729 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-10 03:08:25,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:25,735 INFO L225 Difference]: With dead ends: 33 [2018-11-10 03:08:25,735 INFO L226 Difference]: Without dead ends: 14 [2018-11-10 03:08:25,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:08:25,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-10 03:08:25,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-10 03:08:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-10 03:08:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-10 03:08:25,764 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-10 03:08:25,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:25,764 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-10 03:08:25,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 03:08:25,764 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-10 03:08:25,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 03:08:25,765 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:25,765 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:25,765 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:25,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:25,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1715940768, now seen corresponding path program 1 times [2018-11-10 03:08:25,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:08:25,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:25,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:25,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:25,767 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:08:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:25,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:08:25,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 03:08:25,825 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 03:08:25,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 03:08:25,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 03:08:25,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 03:08:25,826 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2018-11-10 03:08:25,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:25,836 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-10 03:08:25,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 03:08:25,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-10 03:08:25,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:25,837 INFO L225 Difference]: With dead ends: 23 [2018-11-10 03:08:25,837 INFO L226 Difference]: Without dead ends: 18 [2018-11-10 03:08:25,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 03:08:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-10 03:08:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-10 03:08:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-10 03:08:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-10 03:08:25,840 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2018-11-10 03:08:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:25,841 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-10 03:08:25,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 03:08:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-10 03:08:25,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 03:08:25,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:25,842 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:25,842 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:25,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:25,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1858249546, now seen corresponding path program 1 times [2018-11-10 03:08:25,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:08:25,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:25,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:25,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:25,843 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:08:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:25,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:25,893 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 03:08:25,894 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-10 03:08:25,895 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [17], [21], [28], [31], [33], [39], [40], [41], [43] [2018-11-10 03:08:25,924 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 03:08:25,924 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 03:08:25,997 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-10 03:08:26,202 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 03:08:26,203 INFO L272 AbstractInterpreter]: Visited 14 different actions 186 times. Merged at 5 different actions 98 times. Widened at 1 different actions 16 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-11-10 03:08:26,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:26,209 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 03:08:26,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:26,209 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:08:26,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:26,216 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 03:08:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:26,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:26,279 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:08:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:26,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 03:08:26,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-10 03:08:26,321 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 03:08:26,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 03:08:26,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 03:08:26,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-10 03:08:26,322 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2018-11-10 03:08:26,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:26,348 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-11-10 03:08:26,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 03:08:26,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-10 03:08:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:26,350 INFO L225 Difference]: With dead ends: 27 [2018-11-10 03:08:26,350 INFO L226 Difference]: Without dead ends: 22 [2018-11-10 03:08:26,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-10 03:08:26,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-10 03:08:26,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-11-10 03:08:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 03:08:26,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-10 03:08:26,352 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2018-11-10 03:08:26,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:26,353 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-10 03:08:26,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 03:08:26,353 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-10 03:08:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 03:08:26,353 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:26,353 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:26,354 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:26,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:26,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1003959284, now seen corresponding path program 2 times [2018-11-10 03:08:26,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:08:26,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:26,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:26,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:26,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:08:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:26,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:26,419 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 03:08:26,420 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 03:08:26,420 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 03:08:26,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:26,420 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:08:26,435 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 03:08:26,435 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 03:08:26,446 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 03:08:26,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:08:26,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:26,920 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:08:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:27,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 03:08:27,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-11-10 03:08:27,234 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 03:08:27,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 03:08:27,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 03:08:27,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-11-10 03:08:27,235 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2018-11-10 03:08:27,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:27,277 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-11-10 03:08:27,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 03:08:27,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-10 03:08:27,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:27,279 INFO L225 Difference]: With dead ends: 31 [2018-11-10 03:08:27,279 INFO L226 Difference]: Without dead ends: 26 [2018-11-10 03:08:27,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-11-10 03:08:27,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-10 03:08:27,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-11-10 03:08:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-10 03:08:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-11-10 03:08:27,282 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 19 [2018-11-10 03:08:27,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:27,283 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-10 03:08:27,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 03:08:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-11-10 03:08:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 03:08:27,283 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:27,284 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:27,284 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:27,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:27,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1434410910, now seen corresponding path program 3 times [2018-11-10 03:08:27,284 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:08:27,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:27,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:08:27,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:27,285 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:08:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:27,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:27,356 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 03:08:27,357 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 03:08:27,357 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 03:08:27,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:27,357 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:08:27,362 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 03:08:27,363 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-10 03:08:27,370 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 03:08:27,371 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:08:27,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:27,473 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:08:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:27,673 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 03:08:27,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2018-11-10 03:08:27,673 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 03:08:27,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 03:08:27,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 03:08:27,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-11-10 03:08:27,674 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 9 states. [2018-11-10 03:08:27,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:27,723 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2018-11-10 03:08:27,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 03:08:27,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-11-10 03:08:27,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:27,724 INFO L225 Difference]: With dead ends: 35 [2018-11-10 03:08:27,724 INFO L226 Difference]: Without dead ends: 30 [2018-11-10 03:08:27,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-11-10 03:08:27,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-10 03:08:27,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-11-10 03:08:27,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-10 03:08:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-10 03:08:27,728 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 23 [2018-11-10 03:08:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:27,728 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-10 03:08:27,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 03:08:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-10 03:08:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 03:08:27,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:27,729 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:27,729 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:27,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:27,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1032477112, now seen corresponding path program 4 times [2018-11-10 03:08:27,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:08:27,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:27,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:08:27,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:27,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:08:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:27,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:27,816 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 03:08:27,816 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 03:08:27,816 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 03:08:27,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:27,816 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:08:27,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:27,822 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 03:08:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:27,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:28,052 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:08:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:28,876 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 03:08:28,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2018-11-10 03:08:28,877 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 03:08:28,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 03:08:28,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 03:08:28,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-11-10 03:08:28,878 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 11 states. [2018-11-10 03:08:29,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:29,011 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-11-10 03:08:29,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 03:08:29,012 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2018-11-10 03:08:29,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:29,012 INFO L225 Difference]: With dead ends: 39 [2018-11-10 03:08:29,013 INFO L226 Difference]: Without dead ends: 34 [2018-11-10 03:08:29,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-11-10 03:08:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-10 03:08:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-11-10 03:08:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-10 03:08:29,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-11-10 03:08:29,017 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 27 [2018-11-10 03:08:29,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:29,018 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-11-10 03:08:29,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 03:08:29,018 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-11-10 03:08:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 03:08:29,018 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:29,019 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:29,019 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:29,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:29,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1472952334, now seen corresponding path program 5 times [2018-11-10 03:08:29,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:08:29,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:29,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:29,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:29,020 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:08:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:29,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:29,080 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 03:08:29,080 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 03:08:29,080 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 03:08:29,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:29,080 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:08:29,092 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 03:08:29,093 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 03:08:29,107 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-10 03:08:29,107 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:08:29,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:31,658 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:08:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:32,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 03:08:32,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2018-11-10 03:08:32,055 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 03:08:32,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 03:08:32,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 03:08:32,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=277, Unknown=1, NotChecked=0, Total=380 [2018-11-10 03:08:32,056 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 13 states. [2018-11-10 03:08:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:32,358 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2018-11-10 03:08:32,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 03:08:32,359 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2018-11-10 03:08:32,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:32,359 INFO L225 Difference]: With dead ends: 43 [2018-11-10 03:08:32,360 INFO L226 Difference]: Without dead ends: 38 [2018-11-10 03:08:32,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=102, Invalid=277, Unknown=1, NotChecked=0, Total=380 [2018-11-10 03:08:32,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-10 03:08:32,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-11-10 03:08:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-10 03:08:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-10 03:08:32,365 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 31 [2018-11-10 03:08:32,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:32,365 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-10 03:08:32,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 03:08:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-10 03:08:32,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-10 03:08:32,366 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:32,366 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:32,367 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:32,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:32,367 INFO L82 PathProgramCache]: Analyzing trace with hash -352942948, now seen corresponding path program 6 times [2018-11-10 03:08:32,367 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:08:32,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:32,368 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:08:32,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:32,368 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:08:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:32,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:32,454 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 03:08:32,454 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 03:08:32,454 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 03:08:32,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:32,454 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:08:32,471 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 03:08:32,471 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-10 03:08:32,486 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 03:08:32,486 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:08:32,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:38,155 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:38,155 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:08:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:38,956 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 03:08:38,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 23 [2018-11-10 03:08:38,956 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 03:08:38,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 03:08:38,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 03:08:38,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=361, Unknown=1, NotChecked=0, Total=506 [2018-11-10 03:08:38,957 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 15 states. [2018-11-10 03:08:39,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:39,659 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2018-11-10 03:08:39,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 03:08:39,660 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2018-11-10 03:08:39,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:39,660 INFO L225 Difference]: With dead ends: 47 [2018-11-10 03:08:39,660 INFO L226 Difference]: Without dead ends: 42 [2018-11-10 03:08:39,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=144, Invalid=361, Unknown=1, NotChecked=0, Total=506 [2018-11-10 03:08:39,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-10 03:08:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-11-10 03:08:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-10 03:08:39,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-10 03:08:39,665 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 35 [2018-11-10 03:08:39,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:39,665 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-10 03:08:39,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 03:08:39,665 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-10 03:08:39,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-10 03:08:39,666 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:39,666 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:39,666 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:39,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:39,666 INFO L82 PathProgramCache]: Analyzing trace with hash -843703226, now seen corresponding path program 7 times [2018-11-10 03:08:39,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:08:39,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:39,667 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:08:39,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:39,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:08:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:39,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:39,764 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 03:08:39,764 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 03:08:39,765 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 03:08:39,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:39,765 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:08:39,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:39,777 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 03:08:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:39,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:52,147 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:08:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:56,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 03:08:56,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 26 [2018-11-10 03:08:56,099 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 03:08:56,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 03:08:56,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 03:08:56,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=473, Unknown=1, NotChecked=0, Total=650 [2018-11-10 03:08:56,100 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 17 states. [2018-11-10 03:08:56,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:56,729 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-11-10 03:08:56,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 03:08:56,730 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2018-11-10 03:08:56,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:56,730 INFO L225 Difference]: With dead ends: 51 [2018-11-10 03:08:56,730 INFO L226 Difference]: Without dead ends: 46 [2018-11-10 03:08:56,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 14 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=176, Invalid=473, Unknown=1, NotChecked=0, Total=650 [2018-11-10 03:08:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-10 03:08:56,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2018-11-10 03:08:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-10 03:08:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-11-10 03:08:56,736 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 39 [2018-11-10 03:08:56,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:56,736 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-11-10 03:08:56,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 03:08:56,736 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-11-10 03:08:56,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-10 03:08:56,737 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:56,737 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:56,737 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:56,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:56,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1842491664, now seen corresponding path program 8 times [2018-11-10 03:08:56,737 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:08:56,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:56,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:56,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:56,738 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:08:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 03:08:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 03:08:56,766 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 03:08:56,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 03:08:56 BoogieIcfgContainer [2018-11-10 03:08:56,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 03:08:56,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 03:08:56,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 03:08:56,788 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 03:08:56,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:08:25" (3/4) ... [2018-11-10 03:08:56,790 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 03:08:56,790 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 03:08:56,791 INFO L168 Benchmark]: Toolchain (without parser) took 31620.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 212.9 MB). Free memory was 959.1 MB in the beginning and 948.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 224.0 MB. Max. memory is 11.5 GB. [2018-11-10 03:08:56,792 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:08:56,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.53 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 947.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 03:08:56,793 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.86 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:08:56,793 INFO L168 Benchmark]: Boogie Preprocessor took 17.85 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:08:56,793 INFO L168 Benchmark]: RCFGBuilder took 190.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:08:56,794 INFO L168 Benchmark]: TraceAbstraction took 31225.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 948.0 MB in the end (delta: 187.8 MB). Peak memory consumption was 251.3 MB. Max. memory is 11.5 GB. [2018-11-10 03:08:56,794 INFO L168 Benchmark]: Witness Printer took 3.11 ms. Allocated memory is still 1.2 GB. Free memory is still 948.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:08:56,797 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 162.53 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 947.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.86 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.85 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 190.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 31225.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 63.4 MB). Free memory was 1.1 GB in the beginning and 948.0 MB in the end (delta: 187.8 MB). Peak memory consumption was 251.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.11 ms. Allocated memory is still 1.2 GB. Free memory is still 948.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 22, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L14] unsigned char x; [L15] unsigned char y; [L16] unsigned char c; [L18] x = 37 [L19] y = 0 [L20] c = 0 VAL [c=0, x=37, y=0] [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; VAL [c=0, x=37, y=0] [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i VAL [bit=1, c=0, i=0, x=37, y=0] [L27] c = c + ((unsigned char)1) VAL [bit=1, c=1, i=0, x=37, y=0] [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; VAL [c=1, x=37, y=0] [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i VAL [bit=1, c=1, i=0, x=37, y=0] [L27] c = c + ((unsigned char)1) VAL [bit=1, c=2, i=0, x=37, y=0] [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; VAL [c=2, x=37, y=0] [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i VAL [bit=1, c=2, i=0, x=37, y=0] [L27] c = c + ((unsigned char)1) VAL [bit=1, c=3, i=0, x=37, y=0] [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; VAL [c=3, x=37, y=0] [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i VAL [bit=1, c=3, i=0, x=37, y=0] [L27] c = c + ((unsigned char)1) VAL [bit=1, c=4, i=0, x=37, y=0] [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; VAL [c=4, x=37, y=0] [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i VAL [bit=1, c=4, i=0, x=37, y=0] [L27] c = c + ((unsigned char)1) VAL [bit=1, c=5, i=0, x=37, y=0] [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; VAL [c=5, x=37, y=0] [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i VAL [bit=1, c=5, i=0, x=37, y=0] [L27] c = c + ((unsigned char)1) VAL [bit=1, c=6, i=0, x=37, y=0] [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; VAL [c=6, x=37, y=0] [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i VAL [bit=1, c=6, i=0, x=37, y=0] [L27] c = c + ((unsigned char)1) VAL [bit=1, c=7, i=0, x=37, y=0] [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; VAL [c=7, x=37, y=0] [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i VAL [bit=1, c=7, i=0, x=37, y=0] [L27] c = c + ((unsigned char)1) VAL [bit=1, c=8, i=0, x=37, y=0] [L21] COND FALSE !(c < (unsigned char)8) VAL [bit=1, c=8, i=0, x=37, y=0] [L29] CALL __VERIFIER_assert(x == y) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNSAFE Result, 31.1s OverallTime, 10 OverallIterations, 9 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 210 SDtfs, 66 SDslu, 1188 SDs, 0 SdLazy, 683 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 425 GetRequests, 299 SyntacticMatches, 24 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 27.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 28.2s InterpolantComputationTime, 442 NumberOfCodeBlocks, 442 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 565 ConstructedInterpolants, 98 QuantifiedInterpolants, 213389 SizeOfPredicates, 10 NumberOfNonLiveVariables, 385 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 0/840 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-11-10 03:08:58,223 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 03:08:58,224 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 03:08:58,232 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-11-10 03:08:58,238 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 03:08:58,239 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 03:08:58,240 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 03:08:58,240 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 03:08:58,241 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 03:08:58,241 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 03:08:58,243 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 03:08:58,245 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 03:08:58,246 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 03:08:58,247 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 03:08:58,248 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 03:08:58,250 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 03:08:58,250 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 03:08:58,250 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 03:08:58,251 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 03:08:58,251 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 03:08:58,252 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 03:08:58,252 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 03:08:58,253 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 03:08:58,253 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 03:08:58,254 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 03:08:58,254 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 03:08:58,254 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 03:08:58,255 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 03:08:58,255 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 03:08:58,256 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-10 03:08:58,268 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 03:08:58,268 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 03:08:58,268 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 03:08:58,269 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 03:08:58,269 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 03:08:58,269 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 03:08:58,269 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 03:08:58,269 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 03:08:58,270 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 03:08:58,270 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 03:08:58,270 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 03:08:58,270 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 03:08:58,270 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 03:08:58,270 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 03:08:58,270 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 03:08:58,270 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 03:08:58,271 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 03:08:58,271 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 03:08:58,271 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 03:08:58,271 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 03:08:58,271 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 03:08:58,271 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 03:08:58,271 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 03:08:58,271 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 03:08:58,272 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:08:58,272 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 03:08:58,272 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 03:08:58,272 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 03:08:58,272 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-10 03:08:58,272 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 03:08:58,272 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 03:08:58,272 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 03:08:58,273 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/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 -> d2a071cc6090a217f48ed180b566a651717a8e39 [2018-11-10 03:08:58,306 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 03:08:58,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 03:08:58,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 03:08:58,319 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 03:08:58,320 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 03:08:58,320 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/../../sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i [2018-11-10 03:08:58,368 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/data/df87eac33/f0bb5760605446b7b57e154d1953986d/FLAG2fa8d3e04 [2018-11-10 03:08:58,714 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 03:08:58,715 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/sv-benchmarks/c/bitvector/num_conversion_1_true-unreach-call_true-no-overflow.i [2018-11-10 03:08:58,719 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/data/df87eac33/f0bb5760605446b7b57e154d1953986d/FLAG2fa8d3e04 [2018-11-10 03:08:58,728 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/data/df87eac33/f0bb5760605446b7b57e154d1953986d [2018-11-10 03:08:58,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 03:08:58,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 03:08:58,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 03:08:58,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 03:08:58,735 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 03:08:58,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:08:58" (1/1) ... [2018-11-10 03:08:58,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1e2d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58, skipping insertion in model container [2018-11-10 03:08:58,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:08:58" (1/1) ... [2018-11-10 03:08:58,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 03:08:58,759 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 03:08:58,872 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:08:58,876 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 03:08:58,888 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:08:58,899 INFO L193 MainTranslator]: Completed translation [2018-11-10 03:08:58,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58 WrapperNode [2018-11-10 03:08:58,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 03:08:58,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 03:08:58,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 03:08:58,900 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 03:08:58,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58" (1/1) ... [2018-11-10 03:08:58,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58" (1/1) ... [2018-11-10 03:08:58,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 03:08:58,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 03:08:58,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 03:08:58,916 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 03:08:58,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58" (1/1) ... [2018-11-10 03:08:58,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58" (1/1) ... [2018-11-10 03:08:58,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58" (1/1) ... [2018-11-10 03:08:58,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58" (1/1) ... [2018-11-10 03:08:58,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58" (1/1) ... [2018-11-10 03:08:58,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58" (1/1) ... [2018-11-10 03:08:58,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58" (1/1) ... [2018-11-10 03:08:58,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 03:08:58,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 03:08:58,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 03:08:58,932 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 03:08:58,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/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 [2018-11-10 03:08:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 03:08:59,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 03:08:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 03:08:59,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 03:08:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 03:08:59,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 03:08:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 03:08:59,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 03:08:59,138 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 03:08:59,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:08:59 BoogieIcfgContainer [2018-11-10 03:08:59,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 03:08:59,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 03:08:59,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 03:08:59,142 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 03:08:59,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:08:58" (1/3) ... [2018-11-10 03:08:59,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a432fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:08:59, skipping insertion in model container [2018-11-10 03:08:59,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:58" (2/3) ... [2018-11-10 03:08:59,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a432fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:08:59, skipping insertion in model container [2018-11-10 03:08:59,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:08:59" (3/3) ... [2018-11-10 03:08:59,145 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_1_true-unreach-call_true-no-overflow.i [2018-11-10 03:08:59,153 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 03:08:59,159 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 03:08:59,172 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 03:08:59,191 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 03:08:59,191 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 03:08:59,192 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 03:08:59,192 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 03:08:59,192 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 03:08:59,192 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 03:08:59,192 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 03:08:59,192 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 03:08:59,192 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 03:08:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-10 03:08:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 03:08:59,211 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:59,212 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:59,213 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:59,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:59,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2008095039, now seen corresponding path program 1 times [2018-11-10 03:08:59,219 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 03:08:59,219 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 03:08:59,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:59,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:59,271 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:08:59,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:08:59,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 03:08:59,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 03:08:59,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 03:08:59,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:08:59,288 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-10 03:08:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:59,304 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-10 03:08:59,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 03:08:59,305 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-10 03:08:59,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:59,310 INFO L225 Difference]: With dead ends: 33 [2018-11-10 03:08:59,310 INFO L226 Difference]: Without dead ends: 14 [2018-11-10 03:08:59,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:08:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-10 03:08:59,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-10 03:08:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-10 03:08:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-10 03:08:59,339 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-10 03:08:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:59,339 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-10 03:08:59,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 03:08:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-10 03:08:59,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 03:08:59,340 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:59,340 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:59,340 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:59,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:59,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1715940768, now seen corresponding path program 1 times [2018-11-10 03:08:59,341 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 03:08:59,341 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 03:08:59,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:59,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:59,392 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:08:59,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:08:59,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 03:08:59,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 03:08:59,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 03:08:59,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 03:08:59,395 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2018-11-10 03:08:59,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:59,410 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-10 03:08:59,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 03:08:59,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-10 03:08:59,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:59,411 INFO L225 Difference]: With dead ends: 23 [2018-11-10 03:08:59,411 INFO L226 Difference]: Without dead ends: 18 [2018-11-10 03:08:59,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 03:08:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-10 03:08:59,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-10 03:08:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-10 03:08:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-10 03:08:59,415 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2018-11-10 03:08:59,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:59,415 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-10 03:08:59,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 03:08:59,415 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-10 03:08:59,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 03:08:59,416 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:59,416 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:59,416 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:59,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:59,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1858249546, now seen corresponding path program 1 times [2018-11-10 03:08:59,417 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 03:08:59,417 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 03:08:59,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:59,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:59,456 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:08:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:59,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:59,485 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:08:59,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:59,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:59,511 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:08:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:59,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-10 03:08:59,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 5] total 7 [2018-11-10 03:08:59,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 03:08:59,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 03:08:59,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-10 03:08:59,561 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 7 states. [2018-11-10 03:08:59,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:59,609 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2018-11-10 03:08:59,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 03:08:59,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-11-10 03:08:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:59,610 INFO L225 Difference]: With dead ends: 33 [2018-11-10 03:08:59,610 INFO L226 Difference]: Without dead ends: 28 [2018-11-10 03:08:59,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-10 03:08:59,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-10 03:08:59,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-10 03:08:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-10 03:08:59,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-10 03:08:59,616 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2018-11-10 03:08:59,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:59,616 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-10 03:08:59,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 03:08:59,617 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-10 03:08:59,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 03:08:59,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:59,617 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:59,618 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:59,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:59,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1032477112, now seen corresponding path program 2 times [2018-11-10 03:08:59,619 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 03:08:59,620 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 03:08:59,638 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-10 03:08:59,661 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:08:59,661 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:08:59,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-10 03:08:59,686 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:08:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-10 03:08:59,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:59,807 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:08:59,821 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 03:08:59,835 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:08:59,835 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:08:59,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:59,954 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:09:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:09:00,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-10 03:09:00,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7, 8] total 18 [2018-11-10 03:09:00,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 03:09:00,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 03:09:00,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2018-11-10 03:09:00,159 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 18 states. [2018-11-10 03:09:00,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:09:00,814 INFO L93 Difference]: Finished difference Result 93 states and 117 transitions. [2018-11-10 03:09:00,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-10 03:09:00,815 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 27 [2018-11-10 03:09:00,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:09:00,818 INFO L225 Difference]: With dead ends: 93 [2018-11-10 03:09:00,819 INFO L226 Difference]: Without dead ends: 77 [2018-11-10 03:09:00,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=338, Invalid=994, Unknown=0, NotChecked=0, Total=1332 [2018-11-10 03:09:00,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-10 03:09:00,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 52. [2018-11-10 03:09:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-10 03:09:00,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2018-11-10 03:09:00,831 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 27 [2018-11-10 03:09:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:09:00,832 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2018-11-10 03:09:00,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 03:09:00,832 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2018-11-10 03:09:00,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-10 03:09:00,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:09:00,833 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:09:00,833 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:09:00,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:09:00,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1701745556, now seen corresponding path program 1 times [2018-11-10 03:09:00,834 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 03:09:00,834 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 03:09:00,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:09:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:09:00,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:09:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 71 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-10 03:09:00,922 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:09:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 71 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-10 03:09:01,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:09:01,007 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:09:01,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:09:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:09:01,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:09:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:09:01,095 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:09:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:09:01,534 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-10 03:09:01,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11, 13] total 28 [2018-11-10 03:09:01,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-10 03:09:01,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-10 03:09:01,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2018-11-10 03:09:01,536 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 28 states. [2018-11-10 03:09:02,052 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-11-10 03:09:02,365 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2018-11-10 03:09:02,708 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2018-11-10 03:09:03,082 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 97 [2018-11-10 03:09:03,464 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2018-11-10 03:09:03,881 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 104 [2018-11-10 03:09:04,083 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2018-11-10 03:09:04,328 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 103 [2018-11-10 03:09:04,580 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2018-11-10 03:09:04,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:09:04,586 INFO L93 Difference]: Finished difference Result 109 states and 132 transitions. [2018-11-10 03:09:04,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-10 03:09:04,587 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 43 [2018-11-10 03:09:04,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:09:04,588 INFO L225 Difference]: With dead ends: 109 [2018-11-10 03:09:04,589 INFO L226 Difference]: Without dead ends: 81 [2018-11-10 03:09:04,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=714, Invalid=1836, Unknown=0, NotChecked=0, Total=2550 [2018-11-10 03:09:04,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-10 03:09:04,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 68. [2018-11-10 03:09:04,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-10 03:09:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2018-11-10 03:09:04,601 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 43 [2018-11-10 03:09:04,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:09:04,601 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2018-11-10 03:09:04,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-10 03:09:04,602 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2018-11-10 03:09:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-10 03:09:04,602 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:09:04,603 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:09:04,603 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:09:04,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:09:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1224392102, now seen corresponding path program 2 times [2018-11-10 03:09:04,603 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 03:09:04,604 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 03:09:04,616 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-10 03:09:04,644 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:09:04,644 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:09:04,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:09:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-10 03:09:04,793 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:09:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-10 03:09:05,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:09:05,225 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:09:05,235 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 03:09:05,246 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:09:05,246 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:09:05,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:09:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:09:05,403 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:09:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:09:06,826 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-10 03:09:06,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20, 21] total 51 [2018-11-10 03:09:06,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-11-10 03:09:06,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-11-10 03:09:06,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=2132, Unknown=0, NotChecked=0, Total=2550 [2018-11-10 03:09:06,828 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 51 states. [2018-11-10 03:09:07,402 WARN L179 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 108 [2018-11-10 03:09:07,765 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2018-11-10 03:09:08,097 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2018-11-10 03:09:08,720 WARN L179 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 117 [2018-11-10 03:09:09,496 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 108 [2018-11-10 03:09:10,246 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2018-11-10 03:09:10,758 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2018-11-10 03:09:12,693 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 125 [2018-11-10 03:09:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:09:12,787 INFO L93 Difference]: Finished difference Result 184 states and 202 transitions. [2018-11-10 03:09:12,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-10 03:09:12,787 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 43 [2018-11-10 03:09:12,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:09:12,788 INFO L225 Difference]: With dead ends: 184 [2018-11-10 03:09:12,788 INFO L226 Difference]: Without dead ends: 118 [2018-11-10 03:09:12,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1029, Invalid=4671, Unknown=0, NotChecked=0, Total=5700 [2018-11-10 03:09:12,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-11-10 03:09:12,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 76. [2018-11-10 03:09:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-10 03:09:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2018-11-10 03:09:12,800 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 43 [2018-11-10 03:09:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:09:12,800 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2018-11-10 03:09:12,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-11-10 03:09:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2018-11-10 03:09:12,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-10 03:09:12,801 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:09:12,801 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:09:12,801 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:09:12,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:09:12,802 INFO L82 PathProgramCache]: Analyzing trace with hash 714919012, now seen corresponding path program 3 times [2018-11-10 03:09:12,802 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 03:09:12,802 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 03:09:12,813 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-10 03:09:12,909 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-10 03:09:12,909 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:09:12,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:09:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 3 proven. 117 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 03:09:13,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:09:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 03:09:13,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:09:13,616 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:09:13,627 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 03:09:13,653 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-10 03:09:13,653 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:09:13,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:09:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 63 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-10 03:09:13,742 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:09:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 63 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-10 03:09:13,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-10 03:09:13,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 6, 6] total 31 [2018-11-10 03:09:13,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-10 03:09:13,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-10 03:09:13,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2018-11-10 03:09:13,961 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 31 states. [2018-11-10 03:09:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:09:14,051 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2018-11-10 03:09:14,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 03:09:14,052 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 43 [2018-11-10 03:09:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:09:14,052 INFO L225 Difference]: With dead ends: 76 [2018-11-10 03:09:14,052 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 03:09:14,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2018-11-10 03:09:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 03:09:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 03:09:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 03:09:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 03:09:14,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2018-11-10 03:09:14,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:09:14,054 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 03:09:14,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-10 03:09:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 03:09:14,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 03:09:14,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 03:09:14,372 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 52 [2018-11-10 03:09:14,375 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 03:09:14,375 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 03:09:14,375 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 03:09:14,375 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 03:09:14,375 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 03:09:14,375 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 03:09:14,375 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 12 32) the Hoare annotation is: true [2018-11-10 03:09:14,375 INFO L425 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-11-10 03:09:14,375 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 12 32) no Hoare annotation was computed. [2018-11-10 03:09:14,375 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-11-10 03:09:14,375 INFO L425 ceAbstractionStarter]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2018-11-10 03:09:14,375 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 28) no Hoare annotation was computed. [2018-11-10 03:09:14,376 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 28) the Hoare annotation is: (let ((.cse4 (= (_ bv37 8) main_~y~0)) (.cse2 (= (_ bv1 8) main_~y~0)) (.cse0 (= (_ bv37 8) main_~x~0)) (.cse1 (= (_ bv0 8) main_~bit~0)) (.cse3 (= (_ bv5 8) main_~y~0))) (or (and .cse0 .cse1 .cse2 (= (_ bv2 8) main_~c~0)) (and .cse0 .cse1 .cse3 (= (_ bv4 8) main_~c~0)) (and (= (_ bv0 8) main_~c~0) .cse0 (= (_ bv0 8) main_~y~0)) (and .cse1 (= (_ bv8 8) main_~c~0) .cse0 .cse4) (and .cse0 .cse3 (= (_ bv3 8) main_~c~0)) (and .cse0 .cse4 (= (_ bv7 8) main_~c~0) (= main_~bit~0 ((_ extract 7 0) (bvand (_ bv37 32) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) ((_ zero_extend 24) main_~c~0)))))))) (and .cse0 .cse4 (= (_ bv6 8) main_~c~0)) (and .cse0 (= (_ bv1 8) main_~c~0) (not (= ((_ zero_extend 24) main_~bit~0) (_ bv0 32))) .cse2) (and .cse0 .cse1 (= (_ bv5 8) main_~c~0) .cse3))) [2018-11-10 03:09:14,376 INFO L421 ceAbstractionStarter]: At program point L21-4(lines 21 28) the Hoare annotation is: (and (= (_ bv37 8) main_~x~0) (= (_ bv37 8) main_~y~0) (= (_ bv0 8) main_~bit~0) (= (_ bv8 8) main_~c~0)) [2018-11-10 03:09:14,376 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 12 32) no Hoare annotation was computed. [2018-11-10 03:09:14,376 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-11-10 03:09:14,376 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2018-11-10 03:09:14,376 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-10 03:09:14,376 INFO L425 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-11-10 03:09:14,376 INFO L425 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-11-10 03:09:14,376 INFO L425 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-11-10 03:09:14,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 03:09:14 BoogieIcfgContainer [2018-11-10 03:09:14,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 03:09:14,386 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 03:09:14,386 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 03:09:14,386 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 03:09:14,386 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:08:59" (3/4) ... [2018-11-10 03:09:14,390 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 03:09:14,395 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 03:09:14,395 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 03:09:14,395 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 03:09:14,398 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-10 03:09:14,398 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 03:09:14,398 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 03:09:14,426 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d63f2fc7-8e40-4b73-9d2a-1edb4704fba8/bin-2019/utaipan/witness.graphml [2018-11-10 03:09:14,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 03:09:14,426 INFO L168 Benchmark]: Toolchain (without parser) took 15694.99 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 321.9 MB). Free memory was 950.8 MB in the beginning and 891.3 MB in the end (delta: 59.5 MB). Peak memory consumption was 381.4 MB. Max. memory is 11.5 GB. [2018-11-10 03:09:14,427 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:09:14,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.67 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:09:14,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.33 ms. Allocated memory is still 1.0 GB. Free memory is still 940.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:09:14,428 INFO L168 Benchmark]: Boogie Preprocessor took 15.74 ms. Allocated memory is still 1.0 GB. Free memory was 940.1 MB in the beginning and 934.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 03:09:14,428 INFO L168 Benchmark]: RCFGBuilder took 207.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2018-11-10 03:09:14,428 INFO L168 Benchmark]: TraceAbstraction took 15245.82 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 197.1 MB). Free memory was 1.1 GB in the beginning and 891.3 MB in the end (delta: 211.6 MB). Peak memory consumption was 408.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:09:14,429 INFO L168 Benchmark]: Witness Printer took 40.29 ms. Allocated memory is still 1.4 GB. Free memory is still 891.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:09:14,430 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.67 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.33 ms. Allocated memory is still 1.0 GB. Free memory is still 940.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.74 ms. Allocated memory is still 1.0 GB. Free memory was 940.1 MB in the beginning and 934.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 207.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15245.82 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 197.1 MB). Free memory was 1.1 GB in the beginning and 891.3 MB in the end (delta: 211.6 MB). Peak memory consumption was 408.7 MB. Max. memory is 11.5 GB. * Witness Printer took 40.29 ms. Allocated memory is still 1.4 GB. Free memory is still 891.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((((((((37bv8 == x && 0bv8 == bit) && 1bv8 == y) && 2bv8 == c) || (((37bv8 == x && 0bv8 == bit) && 5bv8 == y) && 4bv8 == c)) || ((0bv8 == c && 37bv8 == x) && 0bv8 == y)) || (((0bv8 == bit && 8bv8 == c) && 37bv8 == x) && 37bv8 == y)) || ((37bv8 == x && 5bv8 == y) && 3bv8 == c)) || (((37bv8 == x && 37bv8 == y) && 7bv8 == c) && bit == ~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(c))[7:0]))[7:0])) || ((37bv8 == x && 37bv8 == y) && 6bv8 == c)) || (((37bv8 == x && 1bv8 == c) && !(~zero_extendFrom8To32(bit) == 0bv32)) && 1bv8 == y)) || (((37bv8 == x && 0bv8 == bit) && 5bv8 == c) && 5bv8 == y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 15.1s OverallTime, 7 OverallIterations, 9 TraceHistogramMax, 9.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 133 SDtfs, 549 SDslu, 1048 SDs, 0 SdLazy, 1051 SolverSat, 315 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 765 GetRequests, 558 SyntacticMatches, 9 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2170 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 82 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 14 PreInvPairs, 24 NumberOfFragments, 137 HoareAnnotationTreeSize, 14 FomulaSimplifications, 441 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 2354 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 363 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 683 ConstructedInterpolants, 32 QuantifiedInterpolants, 412679 SizeOfPredicates, 37 NumberOfNonLiveVariables, 631 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 540/1672 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...