./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 554582d6fc3de8e87f5dd30e5019302b6e1b96be .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:31:10,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:31:10,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:31:10,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:31:10,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:31:10,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:31:10,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:31:10,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:31:10,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:31:10,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:31:10,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:31:10,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:31:10,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:31:10,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:31:10,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:31:10,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:31:10,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:31:10,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:31:10,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:31:10,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:31:10,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:31:10,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:31:10,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:31:10,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:31:10,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:31:10,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:31:10,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:31:10,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:31:10,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:31:10,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:31:10,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:31:10,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:31:10,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:31:10,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:31:10,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:31:10,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:31:10,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:31:10,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:31:10,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:31:10,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:31:10,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:31:10,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-12-07 10:31:10,712 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:31:10,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:31:10,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 10:31:10,712 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 10:31:10,713 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 10:31:10,713 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 10:31:10,713 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 10:31:10,713 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 10:31:10,713 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 10:31:10,713 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 10:31:10,713 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 10:31:10,713 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 10:31:10,713 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 10:31:10,713 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 10:31:10,714 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 10:31:10,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:31:10,714 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 10:31:10,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:31:10,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:31:10,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:31:10,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:31:10,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:31:10,715 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 10:31:10,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:31:10,715 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:31:10,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:31:10,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:31:10,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:31:10,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:31:10,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:31:10,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:31:10,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:31:10,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:31:10,716 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 10:31:10,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:31:10,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:31:10,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:31:10,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 10:31:10,717 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2019-12-07 10:31:10,815 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:31:10,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:31:10,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:31:10,827 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:31:10,827 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:31:10,828 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-12-07 10:31:10,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/data/cbfe4e227/d72164b83f46471a9c66deb4c5a63ba2/FLAG8dece2085 [2019-12-07 10:31:11,253 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:31:11,254 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-12-07 10:31:11,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/data/cbfe4e227/d72164b83f46471a9c66deb4c5a63ba2/FLAG8dece2085 [2019-12-07 10:31:11,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/data/cbfe4e227/d72164b83f46471a9c66deb4c5a63ba2 [2019-12-07 10:31:11,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:31:11,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:31:11,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:31:11,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:31:11,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:31:11,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:31:11" (1/1) ... [2019-12-07 10:31:11,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d27e798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11, skipping insertion in model container [2019-12-07 10:31:11,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:31:11" (1/1) ... [2019-12-07 10:31:11,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:31:11,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:31:11,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:31:11,788 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:31:11,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:31:11,841 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:31:11,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11 WrapperNode [2019-12-07 10:31:11,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:31:11,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:31:11,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:31:11,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:31:11,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11" (1/1) ... [2019-12-07 10:31:11,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11" (1/1) ... [2019-12-07 10:31:11,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:31:11,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:31:11,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:31:11,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:31:11,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11" (1/1) ... [2019-12-07 10:31:11,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11" (1/1) ... [2019-12-07 10:31:11,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11" (1/1) ... [2019-12-07 10:31:11,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11" (1/1) ... [2019-12-07 10:31:11,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11" (1/1) ... [2019-12-07 10:31:11,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11" (1/1) ... [2019-12-07 10:31:11,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11" (1/1) ... [2019-12-07 10:31:11,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:31:11,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:31:11,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:31:11,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:31:11,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:31:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure p [2019-12-07 10:31:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2019-12-07 10:31:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:31:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:31:12,034 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:31:12,034 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 10:31:12,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:31:12 BoogieIcfgContainer [2019-12-07 10:31:12,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:31:12,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:31:12,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:31:12,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:31:12,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:31:11" (1/3) ... [2019-12-07 10:31:12,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d1247a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:31:12, skipping insertion in model container [2019-12-07 10:31:12,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:31:11" (2/3) ... [2019-12-07 10:31:12,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d1247a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:31:12, skipping insertion in model container [2019-12-07 10:31:12,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:31:12" (3/3) ... [2019-12-07 10:31:12,039 INFO L109 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2019-12-07 10:31:12,045 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:31:12,049 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 10:31:12,056 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 10:31:12,071 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:31:12,071 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:31:12,071 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:31:12,071 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:31:12,071 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:31:12,071 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:31:12,071 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:31:12,071 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:31:12,082 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-12-07 10:31:12,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 10:31:12,085 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:31:12,085 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 10:31:12,086 INFO L410 AbstractCegarLoop]: === Iteration 1 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:31:12,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:31:12,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1571177437, now seen corresponding path program 1 times [2019-12-07 10:31:12,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:31:12,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046980647] [2019-12-07 10:31:12,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:31:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:31:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:31:12,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046980647] [2019-12-07 10:31:12,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:31:12,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:31:12,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837990571] [2019-12-07 10:31:12,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:31:12,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:31:12,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:31:12,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:31:12,221 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-12-07 10:31:12,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:31:12,299 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2019-12-07 10:31:12,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:31:12,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-12-07 10:31:12,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:31:12,306 INFO L225 Difference]: With dead ends: 42 [2019-12-07 10:31:12,306 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 10:31:12,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:31:12,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 10:31:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2019-12-07 10:31:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 10:31:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-12-07 10:31:12,332 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2019-12-07 10:31:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:31:12,332 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-12-07 10:31:12,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:31:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-12-07 10:31:12,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 10:31:12,332 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:31:12,333 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:31:12,333 INFO L410 AbstractCegarLoop]: === Iteration 2 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:31:12,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:31:12,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1461860328, now seen corresponding path program 1 times [2019-12-07 10:31:12,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:31:12,333 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039911410] [2019-12-07 10:31:12,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:31:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:31:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:31:12,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039911410] [2019-12-07 10:31:12,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:31:12,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:31:12,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857962219] [2019-12-07 10:31:12,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:31:12,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:31:12,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:31:12,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:31:12,354 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-12-07 10:31:12,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:31:12,364 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-12-07 10:31:12,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:31:12,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-07 10:31:12,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:31:12,365 INFO L225 Difference]: With dead ends: 19 [2019-12-07 10:31:12,365 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 10:31:12,366 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:31:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 10:31:12,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 10:31:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 10:31:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-12-07 10:31:12,369 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7 [2019-12-07 10:31:12,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:31:12,369 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-12-07 10:31:12,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:31:12,369 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-12-07 10:31:12,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 10:31:12,370 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:31:12,370 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:31:12,370 INFO L410 AbstractCegarLoop]: === Iteration 3 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:31:12,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:31:12,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1461867311, now seen corresponding path program 1 times [2019-12-07 10:31:12,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:31:12,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977118806] [2019-12-07 10:31:12,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:31:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:31:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:31:12,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977118806] [2019-12-07 10:31:12,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:31:12,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:31:12,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746399159] [2019-12-07 10:31:12,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:31:12,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:31:12,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:31:12,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:31:12,399 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-12-07 10:31:12,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:31:12,434 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2019-12-07 10:31:12,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:31:12,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-07 10:31:12,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:31:12,436 INFO L225 Difference]: With dead ends: 30 [2019-12-07 10:31:12,436 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 10:31:12,436 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:31:12,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 10:31:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-12-07 10:31:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 10:31:12,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-12-07 10:31:12,443 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2019-12-07 10:31:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:31:12,443 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-12-07 10:31:12,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:31:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-12-07 10:31:12,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 10:31:12,443 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:31:12,443 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:31:12,444 INFO L410 AbstractCegarLoop]: === Iteration 4 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:31:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:31:12,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1926753568, now seen corresponding path program 1 times [2019-12-07 10:31:12,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:31:12,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042180775] [2019-12-07 10:31:12,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:31:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:31:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:31:12,465 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042180775] [2019-12-07 10:31:12,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:31:12,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:31:12,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34484467] [2019-12-07 10:31:12,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:31:12,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:31:12,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:31:12,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:31:12,466 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2019-12-07 10:31:12,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:31:12,474 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-12-07 10:31:12,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:31:12,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 10:31:12,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:31:12,476 INFO L225 Difference]: With dead ends: 24 [2019-12-07 10:31:12,476 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 10:31:12,476 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:31:12,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 10:31:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 10:31:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 10:31:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-12-07 10:31:12,480 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2019-12-07 10:31:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:31:12,480 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-12-07 10:31:12,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:31:12,480 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-12-07 10:31:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 10:31:12,481 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:31:12,481 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:31:12,481 INFO L410 AbstractCegarLoop]: === Iteration 5 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:31:12,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:31:12,481 INFO L82 PathProgramCache]: Analyzing trace with hash 168982822, now seen corresponding path program 1 times [2019-12-07 10:31:12,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:31:12,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117828593] [2019-12-07 10:31:12,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:31:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:31:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:31:12,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117828593] [2019-12-07 10:31:12,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147944935] [2019-12-07 10:31:12,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:31:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:31:12,550 INFO L264 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 10:31:12,554 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:31:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:31:12,572 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:31:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:31:12,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1211558051] [2019-12-07 10:31:12,645 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-12-07 10:31:12,645 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 10:31:12,650 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 10:31:12,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 10:31:12,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2019-12-07 10:31:12,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040271965] [2019-12-07 10:31:12,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 10:31:12,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:31:12,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 10:31:12,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-12-07 10:31:12,652 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 12 states. [2019-12-07 10:31:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:31:12,742 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-12-07 10:31:12,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 10:31:12,742 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2019-12-07 10:31:12,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:31:12,743 INFO L225 Difference]: With dead ends: 33 [2019-12-07 10:31:12,743 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 10:31:12,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2019-12-07 10:31:12,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 10:31:12,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 16. [2019-12-07 10:31:12,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 10:31:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-12-07 10:31:12,748 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2019-12-07 10:31:12,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:31:12,748 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-12-07 10:31:12,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 10:31:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-12-07 10:31:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 10:31:12,749 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:31:12,749 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:31:12,949 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:31:12,950 INFO L410 AbstractCegarLoop]: === Iteration 6 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 10:31:12,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:31:12,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1019019044, now seen corresponding path program 1 times [2019-12-07 10:31:12,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:31:12,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687782482] [2019-12-07 10:31:12,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:31:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:31:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:31:12,991 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687782482] [2019-12-07 10:31:12,991 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546979224] [2019-12-07 10:31:12,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:31:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:31:13,011 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 10:31:13,012 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:31:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:31:13,015 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:31:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:31:13,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1407087737] [2019-12-07 10:31:13,054 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-12-07 10:31:13,054 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 10:31:13,054 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 10:31:13,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 10:31:13,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2019-12-07 10:31:13,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944838407] [2019-12-07 10:31:13,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 10:31:13,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:31:13,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 10:31:13,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-12-07 10:31:13,056 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 12 states. [2019-12-07 10:31:13,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:31:13,137 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-12-07 10:31:13,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 10:31:13,138 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2019-12-07 10:31:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:31:13,138 INFO L225 Difference]: With dead ends: 22 [2019-12-07 10:31:13,138 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 10:31:13,139 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2019-12-07 10:31:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 10:31:13,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 10:31:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 10:31:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 10:31:13,139 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-12-07 10:31:13,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:31:13,140 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 10:31:13,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 10:31:13,140 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 10:31:13,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 10:31:13,340 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:31:13,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 10:31:13,495 INFO L246 CegarLoopResult]: For program point pEXIT(lines 12 22) no Hoare annotation was computed. [2019-12-07 10:31:13,495 INFO L246 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2019-12-07 10:31:13,495 INFO L246 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-12-07 10:31:13,495 INFO L246 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-12-07 10:31:13,496 INFO L249 CegarLoopResult]: At program point pENTRY(lines 12 22) the Hoare annotation is: true [2019-12-07 10:31:13,496 INFO L242 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (or (and (<= p_~n 2147483647) (<= p_~m 2147483647) (<= p_~r 2147483647) (<= 1 p_~n)) (not (<= |p_#in~n| 2147483647)) (not (<= |p_#in~m| 2147483647)) (not (<= |p_#in~r| 2147483647))) [2019-12-07 10:31:13,496 INFO L246 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2019-12-07 10:31:13,496 INFO L246 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2019-12-07 10:31:13,496 INFO L246 CegarLoopResult]: For program point L13(lines 13 21) no Hoare annotation was computed. [2019-12-07 10:31:13,496 INFO L246 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-12-07 10:31:13,496 INFO L246 CegarLoopResult]: For program point pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-12-07 10:31:13,496 INFO L242 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (or (not (<= |p_#in~n| 2147483647)) (and (<= p_~n 2147483647) (<= 1 p_~r) (<= p_~m 2147483647) (<= p_~r 2147483647)) (not (<= |p_#in~m| 2147483647)) (not (<= |p_#in~r| 2147483647))) [2019-12-07 10:31:13,496 INFO L246 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2019-12-07 10:31:13,496 INFO L246 CegarLoopResult]: For program point pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-12-07 10:31:13,497 INFO L246 CegarLoopResult]: For program point pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-12-07 10:31:13,497 INFO L246 CegarLoopResult]: For program point pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-12-07 10:31:13,497 INFO L246 CegarLoopResult]: For program point pFINAL(lines 12 22) no Hoare annotation was computed. [2019-12-07 10:31:13,497 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 10:31:13,497 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 10:31:13,497 INFO L242 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 2147483647) (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~r~0 2147483647)) [2019-12-07 10:31:13,497 INFO L246 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2019-12-07 10:31:13,497 INFO L246 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2019-12-07 10:31:13,498 INFO L242 CegarLoopResult]: At program point L28-2(lines 28 30) the Hoare annotation is: (<= ULTIMATE.start_main_~r~0 2147483647) [2019-12-07 10:31:13,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:31:13 BoogieIcfgContainer [2019-12-07 10:31:13,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:31:13,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:31:13,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:31:13,508 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:31:13,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:31:12" (3/4) ... [2019-12-07 10:31:13,510 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 10:31:13,514 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure p [2019-12-07 10:31:13,518 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 10:31:13,518 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 10:31:13,518 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 10:31:13,548 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f708bf4e-c215-4bef-b333-f50dc8e38ea4/bin/utaipan/witness.graphml [2019-12-07 10:31:13,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:31:13,551 INFO L168 Benchmark]: Toolchain (without parser) took 1892.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 948.9 MB in the beginning and 918.6 MB in the end (delta: 30.3 MB). Peak memory consumption was 131.0 MB. Max. memory is 11.5 GB. [2019-12-07 10:31:13,551 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:31:13,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -148.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:31:13,552 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:31:13,552 INFO L168 Benchmark]: Boogie Preprocessor took 11.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:31:13,553 INFO L168 Benchmark]: RCFGBuilder took 159.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 10:31:13,553 INFO L168 Benchmark]: TraceAbstraction took 1472.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 923.9 MB in the end (delta: 153.8 MB). Peak memory consumption was 153.8 MB. Max. memory is 11.5 GB. [2019-12-07 10:31:13,554 INFO L168 Benchmark]: Witness Printer took 40.91 ms. Allocated memory is still 1.1 GB. Free memory was 923.9 MB in the beginning and 918.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:31:13,556 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 948.9 MB in the beginning and 1.1 GB in the end (delta: -148.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 159.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1472.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 923.9 MB in the end (delta: 153.8 MB). Peak memory consumption was 153.8 MB. Max. memory is 11.5 GB. * Witness Printer took 40.91 ms. Allocated memory is still 1.1 GB. Free memory was 923.9 MB in the beginning and 918.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: r <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 4 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 81 SDtfs, 149 SDslu, 139 SDs, 0 SdLazy, 193 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 29 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 66 HoareAnnotationTreeSize, 17 FomulaSimplifications, 430 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 84 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2309 SizeOfPredicates, 4 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 0/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...