./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/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 0564e568992a96ba006237c1af458e049de52506 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:47:24,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:47:24,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:47:24,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:47:24,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:47:24,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:47:24,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:47:24,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:47:24,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:47:24,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:47:24,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:47:24,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:47:24,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:47:24,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:47:24,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:47:24,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:47:24,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:47:24,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:47:24,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:47:24,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:47:24,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:47:24,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:47:24,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:47:24,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:47:24,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:47:24,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:47:24,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:47:24,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:47:24,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:47:24,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:47:24,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:47:24,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:47:24,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:47:24,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:47:24,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:47:24,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:47:24,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:47:24,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:47:24,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:47:24,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:47:24,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:47:24,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-25 08:47:25,017 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:47:25,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:47:25,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:47:25,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:47:25,029 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:47:25,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:47:25,029 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:47:25,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:47:25,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:47:25,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:47:25,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:47:25,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:47:25,030 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-25 08:47:25,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:47:25,031 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:47:25,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:47:25,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:47:25,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:47:25,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:47:25,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:47:25,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:47:25,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:47:25,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:47:25,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:47:25,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:47:25,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:47:25,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:47:25,035 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/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/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 -> 0564e568992a96ba006237c1af458e049de52506 [2019-11-25 08:47:25,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:47:25,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:47:25,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:47:25,188 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:47:25,188 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:47:25,189 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2019-11-25 08:47:25,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/bin/uautomizer/data/2d315aa3a/cee1520a2e6e43459b17ca2f7e3ee3f3/FLAG8d24b7973 [2019-11-25 08:47:25,666 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:47:25,666 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2019-11-25 08:47:25,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/bin/uautomizer/data/2d315aa3a/cee1520a2e6e43459b17ca2f7e3ee3f3/FLAG8d24b7973 [2019-11-25 08:47:26,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/bin/uautomizer/data/2d315aa3a/cee1520a2e6e43459b17ca2f7e3ee3f3 [2019-11-25 08:47:26,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:47:26,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:47:26,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:26,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:47:26,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:47:26,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:26" (1/1) ... [2019-11-25 08:47:26,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217d9c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26, skipping insertion in model container [2019-11-25 08:47:26,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:26" (1/1) ... [2019-11-25 08:47:26,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:47:26,086 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:47:26,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:26,225 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:47:26,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:26,319 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:47:26,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26 WrapperNode [2019-11-25 08:47:26,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:26,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:26,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:47:26,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:47:26,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26" (1/1) ... [2019-11-25 08:47:26,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26" (1/1) ... [2019-11-25 08:47:26,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:47:26,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:47:26,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:47:26,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:47:26,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26" (1/1) ... [2019-11-25 08:47:26,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26" (1/1) ... [2019-11-25 08:47:26,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26" (1/1) ... [2019-11-25 08:47:26,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26" (1/1) ... [2019-11-25 08:47:26,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26" (1/1) ... [2019-11-25 08:47:26,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26" (1/1) ... [2019-11-25 08:47:26,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26" (1/1) ... [2019-11-25 08:47:26,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:47:26,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:47:26,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:47:26,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:47:26,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/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 [2019-11-25 08:47:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:47:26,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:47:26,597 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:47:26,597 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:47:26,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:26 BoogieIcfgContainer [2019-11-25 08:47:26,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:47:26,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:47:26,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:47:26,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:47:26,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:47:26" (1/3) ... [2019-11-25 08:47:26,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193eefbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:26, skipping insertion in model container [2019-11-25 08:47:26,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:26" (2/3) ... [2019-11-25 08:47:26,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193eefbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:26, skipping insertion in model container [2019-11-25 08:47:26,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:26" (3/3) ... [2019-11-25 08:47:26,605 INFO L109 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2019-11-25 08:47:26,614 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:47:26,620 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-25 08:47:26,630 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-25 08:47:26,648 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:47:26,649 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:47:26,649 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:47:26,649 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:47:26,649 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:47:26,649 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:47:26,649 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:47:26,649 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:47:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-25 08:47:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-25 08:47:26,666 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:26,667 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-25 08:47:26,667 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:26,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:26,673 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-25 08:47:26,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:26,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338271913] [2019-11-25 08:47:26,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:26,798 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338271913] [2019-11-25 08:47:26,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:26,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-25 08:47:26,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809066293] [2019-11-25 08:47:26,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:47:26,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:26,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:47:26,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:26,835 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-25 08:47:26,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:26,938 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-11-25 08:47:26,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:47:26,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-25 08:47:26,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:26,945 INFO L225 Difference]: With dead ends: 26 [2019-11-25 08:47:26,945 INFO L226 Difference]: Without dead ends: 13 [2019-11-25 08:47:26,948 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:26,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-25 08:47:26,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-25 08:47:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:47:26,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-25 08:47:26,971 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-11-25 08:47:26,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:26,972 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-25 08:47:26,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:47:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-25 08:47:26,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 08:47:26,972 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:26,972 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 08:47:26,973 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:26,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:26,973 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-25 08:47:26,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:26,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517232168] [2019-11-25 08:47:26,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:27,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517232168] [2019-11-25 08:47:27,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:27,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:47:27,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420752548] [2019-11-25 08:47:27,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:47:27,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:27,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:47:27,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:47:27,007 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-11-25 08:47:27,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:27,073 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-11-25 08:47:27,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:47:27,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-25 08:47:27,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:27,074 INFO L225 Difference]: With dead ends: 17 [2019-11-25 08:47:27,074 INFO L226 Difference]: Without dead ends: 15 [2019-11-25 08:47:27,075 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:47:27,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-25 08:47:27,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-25 08:47:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-25 08:47:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-25 08:47:27,078 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2019-11-25 08:47:27,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:27,079 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-25 08:47:27,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:47:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-25 08:47:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:47:27,079 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:27,079 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:47:27,080 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:27,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:27,080 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-11-25 08:47:27,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:27,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710378676] [2019-11-25 08:47:27,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:27,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710378676] [2019-11-25 08:47:27,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:27,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-25 08:47:27,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456251896] [2019-11-25 08:47:27,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:47:27,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:27,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:47:27,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:27,103 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2019-11-25 08:47:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:27,117 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-25 08:47:27,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:47:27,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-25 08:47:27,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:27,119 INFO L225 Difference]: With dead ends: 14 [2019-11-25 08:47:27,119 INFO L226 Difference]: Without dead ends: 13 [2019-11-25 08:47:27,119 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-25 08:47:27,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-25 08:47:27,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-25 08:47:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-25 08:47:27,123 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2019-11-25 08:47:27,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:27,123 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-25 08:47:27,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:47:27,123 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-25 08:47:27,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:47:27,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:27,124 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:27,124 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:27,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:27,125 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-11-25 08:47:27,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:27,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058796226] [2019-11-25 08:47:27,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:27,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058796226] [2019-11-25 08:47:27,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321919338] [2019-11-25 08:47:27,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/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 [2019-11-25 08:47:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:47:27,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:27,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:47:27,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2019-11-25 08:47:27,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676576914] [2019-11-25 08:47:27,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:47:27,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:27,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:27,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:47:27,310 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-11-25 08:47:27,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:27,368 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-25 08:47:27,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:47:27,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-25 08:47:27,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:27,369 INFO L225 Difference]: With dead ends: 14 [2019-11-25 08:47:27,369 INFO L226 Difference]: Without dead ends: 13 [2019-11-25 08:47:27,370 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:47:27,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-25 08:47:27,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-25 08:47:27,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:47:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-25 08:47:27,373 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2019-11-25 08:47:27,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:27,374 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-25 08:47:27,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:47:27,374 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-25 08:47:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:47:27,375 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:27,375 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-25 08:47:27,577 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:27,580 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:27,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:27,580 INFO L82 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2019-11-25 08:47:27,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:27,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143171160] [2019-11-25 08:47:27,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:27,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143171160] [2019-11-25 08:47:27,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34817261] [2019-11-25 08:47:27,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/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 [2019-11-25 08:47:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:47:27,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:27,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:47:27,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2019-11-25 08:47:27,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847541339] [2019-11-25 08:47:27,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:47:27,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:27,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:27,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:47:27,706 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-11-25 08:47:27,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:27,746 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-25 08:47:27,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:47:27,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-25 08:47:27,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:27,747 INFO L225 Difference]: With dead ends: 12 [2019-11-25 08:47:27,747 INFO L226 Difference]: Without dead ends: 11 [2019-11-25 08:47:27,748 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:47:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-25 08:47:27,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-25 08:47:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-25 08:47:27,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-25 08:47:27,751 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2019-11-25 08:47:27,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:27,751 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-25 08:47:27,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:47:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-25 08:47:27,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:47:27,752 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:27,752 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-25 08:47:27,952 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:27,953 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:27,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:27,953 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-11-25 08:47:27,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:27,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094887225] [2019-11-25 08:47:27,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:27,995 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094887225] [2019-11-25 08:47:27,995 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674795824] [2019-11-25 08:47:27,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/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 [2019-11-25 08:47:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:47:28,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:28,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:28,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-25 08:47:28,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048124013] [2019-11-25 08:47:28,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:47:28,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:28,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:47:28,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:47:28,020 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-11-25 08:47:28,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:28,044 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-25 08:47:28,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:47:28,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-25 08:47:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:28,045 INFO L225 Difference]: With dead ends: 18 [2019-11-25 08:47:28,045 INFO L226 Difference]: Without dead ends: 17 [2019-11-25 08:47:28,046 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:47:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-25 08:47:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-25 08:47:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-25 08:47:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-25 08:47:28,049 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2019-11-25 08:47:28,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:28,049 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-25 08:47:28,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:47:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-25 08:47:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-25 08:47:28,050 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:28,050 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-11-25 08:47:28,253 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:28,254 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:28,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:28,254 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-11-25 08:47:28,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:28,255 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228131058] [2019-11-25 08:47:28,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:28,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228131058] [2019-11-25 08:47:28,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789609054] [2019-11-25 08:47:28,308 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/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 [2019-11-25 08:47:28,347 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:47:28,347 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:28,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:47:28,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:28,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:28,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-25 08:47:28,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095357438] [2019-11-25 08:47:28,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:47:28,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:28,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:47:28,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:47:28,356 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2019-11-25 08:47:28,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:28,391 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-25 08:47:28,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:47:28,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-25 08:47:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:28,393 INFO L225 Difference]: With dead ends: 23 [2019-11-25 08:47:28,393 INFO L226 Difference]: Without dead ends: 22 [2019-11-25 08:47:28,393 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:47:28,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-25 08:47:28,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-11-25 08:47:28,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-25 08:47:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-11-25 08:47:28,397 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2019-11-25 08:47:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:28,397 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-11-25 08:47:28,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:47:28,398 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-11-25 08:47:28,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-25 08:47:28,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:28,398 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-11-25 08:47:28,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:28,604 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:47:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:28,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-11-25 08:47:28,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:47:28,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431663536] [2019-11-25 08:47:28,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:47:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:28,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431663536] [2019-11-25 08:47:28,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660353068] [2019-11-25 08:47:28,659 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:28,695 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-25 08:47:28,696 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:28,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:47:28,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:47:28,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:28,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 11 [2019-11-25 08:47:28,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372884093] [2019-11-25 08:47:28,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:47:28,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:47:28,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:47:28,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:47:28,849 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 13 states. [2019-11-25 08:47:29,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:29,293 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2019-11-25 08:47:29,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-25 08:47:29,293 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2019-11-25 08:47:29,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:29,294 INFO L225 Difference]: With dead ends: 28 [2019-11-25 08:47:29,294 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:47:29,294 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2019-11-25 08:47:29,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:47:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:47:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:47:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:47:29,295 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-11-25 08:47:29,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:29,295 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:47:29,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:47:29,295 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:47:29,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:47:29,496 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:29,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:47:29,622 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2019-11-25 08:47:29,630 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-25 08:47:29,630 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:47:29,630 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-25 08:47:29,630 INFO L447 ceAbstractionStarter]: At program point L21(lines 13 22) the Hoare annotation is: true [2019-11-25 08:47:29,630 INFO L444 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-25 08:47:29,631 INFO L444 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-11-25 08:47:29,631 INFO L440 ceAbstractionStarter]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse0 (<= 24 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~x~0 2147483624) .cse0 (<= ULTIMATE.start_main_~y~0 24)) (and (<= 23 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 23) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 2147483624))) (and (<= (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) 2147483625) (<= ULTIMATE.start_main_~y~0 25) .cse0) (and .cse0 (<= ULTIMATE.start_main_~y~0 2147483647) (<= ULTIMATE.start_main_~y~0 (+ (div (+ (* ULTIMATE.start_main_~x~0 (- 1)) 2147483625) 2) 1))))) [2019-11-25 08:47:29,631 INFO L444 ceAbstractionStarter]: For program point L17-3(lines 17 20) no Hoare annotation was computed. [2019-11-25 08:47:29,631 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-25 08:47:29,631 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-11-25 08:47:29,631 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:47:29,631 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:47:29,632 INFO L444 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-25 08:47:29,632 INFO L444 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-11-25 08:47:29,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:47:29 BoogieIcfgContainer [2019-11-25 08:47:29,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:47:29,647 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:47:29,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:47:29,647 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:47:29,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:26" (3/4) ... [2019-11-25 08:47:29,651 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:47:29,660 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:47:29,661 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:47:29,694 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2cc6799c-7f12-437a-a49c-89189aeb9510/bin/uautomizer/witness.graphml [2019-11-25 08:47:29,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:47:29,696 INFO L168 Benchmark]: Toolchain (without parser) took 3638.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 944.8 MB in the beginning and 931.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 165.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:29,696 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:29,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -201.1 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:29,697 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:29,697 INFO L168 Benchmark]: Boogie Preprocessor took 18.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:29,698 INFO L168 Benchmark]: RCFGBuilder took 230.41 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:29,698 INFO L168 Benchmark]: TraceAbstraction took 3047.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 937.2 MB in the end (delta: 191.7 MB). Peak memory consumption was 191.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:29,699 INFO L168 Benchmark]: Witness Printer took 47.15 ms. Allocated memory is still 1.2 GB. Free memory was 937.2 MB in the beginning and 931.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:29,702 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -201.1 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.68 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 18.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 230.41 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3047.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 937.2 MB in the end (delta: 191.7 MB). Peak memory consumption was 191.7 MB. Max. memory is 11.5 GB. * Witness Printer took 47.15 ms. Allocated memory is still 1.2 GB. Free memory was 937.2 MB in the beginning and 931.8 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: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: 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: 17]: Loop Invariant Derived loop invariant: ((((x <= 2147483624 && 24 <= y) && y <= 24) || ((23 <= y && y <= 23) && x <= y + 2147483624)) || ((x + y <= 2147483625 && y <= 25) && 24 <= y)) || ((24 <= y && y <= 2147483647) && y <= (x * -1 + 2147483625) / 2 + 1) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 26 SDtfs, 69 SDslu, 10 SDs, 0 SdLazy, 217 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 5 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 54 HoareAnnotationTreeSize, 2 FomulaSimplifications, 67 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 124 ConstructedInterpolants, 3 QuantifiedInterpolants, 6367 SizeOfPredicates, 2 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 5/98 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...