./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c -s /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer --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 Automizer --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 0.1.24-cad4683 [2019-10-22 08:54:10,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:10,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:10,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:10,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:10,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:10,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:10,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:10,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:10,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:10,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:10,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:10,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:10,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:10,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:10,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:10,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:10,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:10,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:10,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:10,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:10,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:10,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:10,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:11,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:11,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:11,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:11,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:11,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:11,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:11,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:11,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:11,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:11,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:11,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:11,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:11,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:11,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:11,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:11,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:11,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:11,011 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 08:54:11,023 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:11,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:11,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:11,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:11,025 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:11,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:11,025 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:54:11,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:11,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:11,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:54:11,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:54:11,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:54:11,026 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 08:54:11,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:11,026 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:11,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:54:11,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:11,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:11,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:54:11,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:54:11,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:11,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:11,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:54:11,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:54:11,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:11,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:54:11,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:54:11,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2019-10-22 08:54:11,067 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:11,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:11,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:11,087 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:11,087 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:11,088 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-10-22 08:54:11,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/data/2fad29630/6e0582550f4b4c56a86896c5b74e8b34/FLAG26b008fd9 [2019-10-22 08:54:11,516 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:11,517 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-10-22 08:54:11,521 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/data/2fad29630/6e0582550f4b4c56a86896c5b74e8b34/FLAG26b008fd9 [2019-10-22 08:54:11,531 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/data/2fad29630/6e0582550f4b4c56a86896c5b74e8b34 [2019-10-22 08:54:11,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:11,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:11,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:11,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:11,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:11,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d53c513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11, skipping insertion in model container [2019-10-22 08:54:11,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,553 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:11,571 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:11,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:11,715 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:11,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:11,797 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:11,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11 WrapperNode [2019-10-22 08:54:11,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:11,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:11,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:11,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:11,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:11,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:11,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:11,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:11,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:11,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:11,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:11,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:11,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure p [2019-10-22 08:54:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2019-10-22 08:54:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:11,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:12,119 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:12,119 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 08:54:12,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:12 BoogieIcfgContainer [2019-10-22 08:54:12,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:12,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:54:12,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:54:12,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:54:12,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:54:11" (1/3) ... [2019-10-22 08:54:12,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3903b412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:12, skipping insertion in model container [2019-10-22 08:54:12,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11" (2/3) ... [2019-10-22 08:54:12,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3903b412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:12, skipping insertion in model container [2019-10-22 08:54:12,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:12" (3/3) ... [2019-10-22 08:54:12,132 INFO L109 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2019-10-22 08:54:12,141 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:54:12,148 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 08:54:12,157 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 08:54:12,198 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:54:12,199 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:54:12,199 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:54:12,199 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:12,199 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:12,199 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:54:12,199 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:12,199 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:54:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-22 08:54:12,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:54:12,219 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:12,220 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:54:12,221 INFO L410 AbstractCegarLoop]: === Iteration 1 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:12,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:12,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1571177437, now seen corresponding path program 1 times [2019-10-22 08:54:12,232 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:12,232 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107801052] [2019-10-22 08:54:12,232 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:12,458 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107801052] [2019-10-22 08:54:12,459 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:12,459 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:12,460 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330383683] [2019-10-22 08:54:12,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:54:12,465 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:12,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:54:12,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:12,482 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2019-10-22 08:54:12,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:12,624 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2019-10-22 08:54:12,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:54:12,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-10-22 08:54:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:12,640 INFO L225 Difference]: With dead ends: 44 [2019-10-22 08:54:12,640 INFO L226 Difference]: Without dead ends: 28 [2019-10-22 08:54:12,643 INFO L600 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 [2019-10-22 08:54:12,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-22 08:54:12,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2019-10-22 08:54:12,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 08:54:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-22 08:54:12,681 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2019-10-22 08:54:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:12,681 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-22 08:54:12,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:54:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-22 08:54:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 08:54:12,682 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:12,683 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:12,683 INFO L410 AbstractCegarLoop]: === Iteration 2 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:12,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1461860328, now seen corresponding path program 1 times [2019-10-22 08:54:12,684 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:12,684 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144742896] [2019-10-22 08:54:12,684 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:12,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144742896] [2019-10-22 08:54:12,727 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:12,727 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:54:12,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569520714] [2019-10-22 08:54:12,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:54:12,729 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:12,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:54:12,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:54:12,730 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-10-22 08:54:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:12,742 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-10-22 08:54:12,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:54:12,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 08:54:12,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:12,743 INFO L225 Difference]: With dead ends: 19 [2019-10-22 08:54:12,743 INFO L226 Difference]: Without dead ends: 18 [2019-10-22 08:54:12,744 INFO L600 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 [2019-10-22 08:54:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-22 08:54:12,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-22 08:54:12,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 08:54:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-10-22 08:54:12,752 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7 [2019-10-22 08:54:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:12,752 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-10-22 08:54:12,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:54:12,753 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-10-22 08:54:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 08:54:12,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:12,753 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:12,754 INFO L410 AbstractCegarLoop]: === Iteration 3 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:12,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:12,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1461867311, now seen corresponding path program 1 times [2019-10-22 08:54:12,754 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:12,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022414413] [2019-10-22 08:54:12,755 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,756 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:12,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022414413] [2019-10-22 08:54:12,819 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:12,819 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:12,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216930992] [2019-10-22 08:54:12,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:54:12,820 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:12,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:54:12,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:12,821 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-10-22 08:54:12,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:12,876 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2019-10-22 08:54:12,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:54:12,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-10-22 08:54:12,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:12,877 INFO L225 Difference]: With dead ends: 30 [2019-10-22 08:54:12,877 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 08:54:12,878 INFO L600 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 [2019-10-22 08:54:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 08:54:12,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-10-22 08:54:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-22 08:54:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-10-22 08:54:12,884 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2019-10-22 08:54:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:12,885 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-10-22 08:54:12,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:54:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-10-22 08:54:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 08:54:12,885 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:12,885 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:12,886 INFO L410 AbstractCegarLoop]: === Iteration 4 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:12,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:12,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1926753568, now seen corresponding path program 1 times [2019-10-22 08:54:12,887 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:12,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442786962] [2019-10-22 08:54:12,887 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,887 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:12,912 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442786962] [2019-10-22 08:54:12,913 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:12,913 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:54:12,913 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324102511] [2019-10-22 08:54:12,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:54:12,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:12,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:54:12,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:54:12,914 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2019-10-22 08:54:12,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:12,926 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-10-22 08:54:12,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:54:12,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-10-22 08:54:12,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:12,927 INFO L225 Difference]: With dead ends: 24 [2019-10-22 08:54:12,928 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 08:54:12,928 INFO L600 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 [2019-10-22 08:54:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 08:54:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-22 08:54:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-22 08:54:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-10-22 08:54:12,938 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2019-10-22 08:54:12,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:12,938 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-10-22 08:54:12,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:54:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-10-22 08:54:12,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:54:12,939 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:12,939 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:12,940 INFO L410 AbstractCegarLoop]: === Iteration 5 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:12,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:12,940 INFO L82 PathProgramCache]: Analyzing trace with hash 168982822, now seen corresponding path program 1 times [2019-10-22 08:54:12,940 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:12,941 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629874731] [2019-10-22 08:54:12,941 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,941 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629874731] [2019-10-22 08:54:13,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857969531] [2019-10-22 08:54:13,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 08:54:13,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,107 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:13,107 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-10-22 08:54:13,107 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664663626] [2019-10-22 08:54:13,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:54:13,108 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:13,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:54:13,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:54:13,109 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2019-10-22 08:54:13,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:13,220 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-10-22 08:54:13,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:54:13,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-10-22 08:54:13,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:13,222 INFO L225 Difference]: With dead ends: 45 [2019-10-22 08:54:13,222 INFO L226 Difference]: Without dead ends: 43 [2019-10-22 08:54:13,223 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:54:13,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-22 08:54:13,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2019-10-22 08:54:13,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 08:54:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-10-22 08:54:13,229 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2019-10-22 08:54:13,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:13,230 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-10-22 08:54:13,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:54:13,230 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-10-22 08:54:13,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 08:54:13,231 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:13,231 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:13,431 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:13,432 INFO L410 AbstractCegarLoop]: === Iteration 6 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,432 INFO L82 PathProgramCache]: Analyzing trace with hash 943507206, now seen corresponding path program 1 times [2019-10-22 08:54:13,432 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,432 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988877952] [2019-10-22 08:54:13,433 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,433 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988877952] [2019-10-22 08:54:13,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533703004] [2019-10-22 08:54:13,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 08:54:13,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,559 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:13,559 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-10-22 08:54:13,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947192104] [2019-10-22 08:54:13,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:54:13,560 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:13,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:54:13,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:54:13,561 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 7 states. [2019-10-22 08:54:13,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:13,676 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2019-10-22 08:54:13,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:54:13,677 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-10-22 08:54:13,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:13,678 INFO L225 Difference]: With dead ends: 67 [2019-10-22 08:54:13,678 INFO L226 Difference]: Without dead ends: 65 [2019-10-22 08:54:13,679 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:54:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-10-22 08:54:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 33. [2019-10-22 08:54:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-22 08:54:13,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-10-22 08:54:13,687 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2019-10-22 08:54:13,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:13,688 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-10-22 08:54:13,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:54:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-10-22 08:54:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 08:54:13,689 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:13,689 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:13,890 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:13,890 INFO L410 AbstractCegarLoop]: === Iteration 7 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:13,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1019019044, now seen corresponding path program 1 times [2019-10-22 08:54:13,891 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,891 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867378193] [2019-10-22 08:54:13,891 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,891 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867378193] [2019-10-22 08:54:13,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136117997] [2019-10-22 08:54:13,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:14,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 08:54:14,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:14,013 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:14,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-10-22 08:54:14,013 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652639286] [2019-10-22 08:54:14,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:54:14,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:14,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:54:14,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:54:14,014 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2019-10-22 08:54:14,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:14,120 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2019-10-22 08:54:14,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:54:14,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-10-22 08:54:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:14,125 INFO L225 Difference]: With dead ends: 53 [2019-10-22 08:54:14,125 INFO L226 Difference]: Without dead ends: 52 [2019-10-22 08:54:14,126 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:54:14,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-22 08:54:14,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2019-10-22 08:54:14,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-22 08:54:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2019-10-22 08:54:14,133 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 12 [2019-10-22 08:54:14,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:14,134 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-10-22 08:54:14,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:54:14,134 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2019-10-22 08:54:14,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 08:54:14,134 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:14,135 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:14,335 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:14,335 INFO L410 AbstractCegarLoop]: === Iteration 8 === [pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:54:14,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:14,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1112438587, now seen corresponding path program 1 times [2019-10-22 08:54:14,336 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:14,336 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245000544] [2019-10-22 08:54:14,336 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,336 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:14,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245000544] [2019-10-22 08:54:14,415 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112358436] [2019-10-22 08:54:14,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:14,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 08:54:14,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:14,463 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:14,464 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-10-22 08:54:14,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335272752] [2019-10-22 08:54:14,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:54:14,465 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:14,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:54:14,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:54:14,466 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 9 states. [2019-10-22 08:54:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:14,775 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-10-22 08:54:14,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 08:54:14,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-10-22 08:54:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:14,777 INFO L225 Difference]: With dead ends: 47 [2019-10-22 08:54:14,777 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:54:14,778 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2019-10-22 08:54:14,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:54:14,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:54:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:54:14,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:54:14,780 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-22 08:54:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:14,780 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:14,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:54:14,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:54:14,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:54:14,982 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:14,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:54:15,361 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2019-10-22 08:54:15,472 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2019-10-22 08:54:15,474 INFO L443 ceAbstractionStarter]: For program point pEXIT(lines 12 22) no Hoare annotation was computed. [2019-10-22 08:54:15,474 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-22 08:54:15,474 INFO L443 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-10-22 08:54:15,474 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-10-22 08:54:15,475 INFO L446 ceAbstractionStarter]: At program point pENTRY(lines 12 22) the Hoare annotation is: true [2019-10-22 08:54:15,475 INFO L439 ceAbstractionStarter]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or (not (<= |p_#in~n| 2147483647)) .cse0 (and (and (<= p_~n 2147483647) (<= 1 p_~n)) (<= p_~m 2147483647) (<= p_~r 2147483647)) .cse1) (or (not (<= |p_#in~n| 2147483646)) .cse0 (<= p_~n 2147483646) .cse1))) [2019-10-22 08:54:15,475 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-10-22 08:54:15,475 INFO L443 ceAbstractionStarter]: For program point L17-3(line 17) no Hoare annotation was computed. [2019-10-22 08:54:15,475 INFO L443 ceAbstractionStarter]: For program point L13(lines 13 21) no Hoare annotation was computed. [2019-10-22 08:54:15,476 INFO L443 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-10-22 08:54:15,476 INFO L439 ceAbstractionStarter]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or (not (<= |p_#in~n| 2147483647)) .cse0 (and (<= p_~m 2147483647) (<= p_~r 2147483647) (and (<= p_~n 2147483647) (<= 1 p_~r))) .cse1) (or (<= p_~n 2147483646) (not (<= |p_#in~n| 2147483646)) .cse0 .cse1))) [2019-10-22 08:54:15,476 INFO L443 ceAbstractionStarter]: For program point L14-3(line 14) no Hoare annotation was computed. [2019-10-22 08:54:15,476 INFO L443 ceAbstractionStarter]: For program point pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-10-22 08:54:15,476 INFO L443 ceAbstractionStarter]: For program point pFINAL(lines 12 22) no Hoare annotation was computed. [2019-10-22 08:54:15,476 INFO L443 ceAbstractionStarter]: For program point pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-10-22 08:54:15,477 INFO L443 ceAbstractionStarter]: For program point pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-10-22 08:54:15,477 INFO L443 ceAbstractionStarter]: For program point pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-10-22 08:54:15,477 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:54:15,477 INFO L439 ceAbstractionStarter]: At program point L31(lines 24 32) the Hoare annotation is: (<= ULTIMATE.start_main_~r~0 2147483647) [2019-10-22 08:54:15,477 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:54:15,477 INFO L439 ceAbstractionStarter]: 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)) [2019-10-22 08:54:15,477 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:54:15,478 INFO L443 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2019-10-22 08:54:15,478 INFO L443 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2019-10-22 08:54:15,478 INFO L443 ceAbstractionStarter]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2019-10-22 08:54:15,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:54:15 BoogieIcfgContainer [2019-10-22 08:54:15,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:54:15,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:15,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:15,504 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:15,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:12" (3/4) ... [2019-10-22 08:54:15,509 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:54:15,519 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure p [2019-10-22 08:54:15,526 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-10-22 08:54:15,526 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:54:15,601 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_505142f1-5172-4ea5-b4ee-d4d7478ceaaf/bin/uautomizer/witness.graphml [2019-10-22 08:54:15,601 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:15,603 INFO L168 Benchmark]: Toolchain (without parser) took 4067.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:15,604 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:15,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:15,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:15,605 INFO L168 Benchmark]: Boogie Preprocessor took 15.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:15,605 INFO L168 Benchmark]: RCFGBuilder took 277.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:15,606 INFO L168 Benchmark]: TraceAbstraction took 3380.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -9.9 MB). Peak memory consumption was 246.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:15,606 INFO L168 Benchmark]: Witness Printer took 98.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:15,614 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 261.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 277.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3380.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -9.9 MB). Peak memory consumption was 246.3 MB. Max. memory is 11.5 GB. * Witness Printer took 98.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 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: 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 - PositiveResult [Line: 14]: 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: 24]: Loop Invariant Derived loop invariant: r <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 4 error locations. Result: SAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 133 SDtfs, 199 SDslu, 230 SDs, 0 SdLazy, 349 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, 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, 8 MinimizatonAttempts, 71 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 29 PreInvPairs, 29 NumberOfFragments, 102 HoareAnnotationTreeSize, 29 FomulaSimplifications, 2073 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 5 FomulaSimplificationsInter, 269 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4106 SizeOfPredicates, 9 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 0/30 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...