./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c -s /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/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 d28857c86a3c83fc75b1b8cf8125f1c52a370911 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:55:15,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:55:15,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:55:15,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:55:15,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:55:15,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:55:15,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:55:15,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:55:15,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:55:15,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:55:15,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:55:15,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:55:15,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:55:15,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:55:15,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:55:15,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:55:15,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:55:15,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:55:15,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:55:15,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:55:15,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:55:15,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:55:15,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:55:15,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:55:15,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:55:15,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:55:15,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:55:15,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:55:15,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:55:15,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:55:15,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:55:15,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:55:15,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:55:15,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:55:15,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:55:15,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:55:15,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:55:15,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:55:15,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:55:15,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:55:15,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:55:15,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-12-07 15:55:15,950 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:55:15,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:55:15,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:55:15,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:55:15,951 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:55:15,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:55:15,952 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:55:15,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:55:15,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:55:15,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:55:15,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:55:15,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:55:15,952 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 15:55:15,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:55:15,952 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:55:15,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:55:15,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:55:15,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:55:15,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:55:15,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:55:15,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:55:15,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:55:15,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:55:15,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:55:15,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:55:15,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:55:15,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:55:15,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:55:15,954 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_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/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 -> d28857c86a3c83fc75b1b8cf8125f1c52a370911 [2019-12-07 15:55:16,056 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:55:16,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:55:16,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:55:16,067 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:55:16,067 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:55:16,068 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2019-12-07 15:55:16,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/data/20f8fab4e/a7549cfc6f7446c7a45db6c6dd550e5c/FLAG609037026 [2019-12-07 15:55:16,511 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:55:16,512 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2019-12-07 15:55:16,515 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/data/20f8fab4e/a7549cfc6f7446c7a45db6c6dd550e5c/FLAG609037026 [2019-12-07 15:55:16,524 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/data/20f8fab4e/a7549cfc6f7446c7a45db6c6dd550e5c [2019-12-07 15:55:16,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:55:16,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:55:16,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:55:16,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:55:16,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:55:16,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:55:16" (1/1) ... [2019-12-07 15:55:16,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446e037f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16, skipping insertion in model container [2019-12-07 15:55:16,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:55:16" (1/1) ... [2019-12-07 15:55:16,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:55:16,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:55:16,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:55:16,645 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:55:16,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:55:16,695 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:55:16,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16 WrapperNode [2019-12-07 15:55:16,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:55:16,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:55:16,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:55:16,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:55:16,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16" (1/1) ... [2019-12-07 15:55:16,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16" (1/1) ... [2019-12-07 15:55:16,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:55:16,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:55:16,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:55:16,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:55:16,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16" (1/1) ... [2019-12-07 15:55:16,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16" (1/1) ... [2019-12-07 15:55:16,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16" (1/1) ... [2019-12-07 15:55:16,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16" (1/1) ... [2019-12-07 15:55:16,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16" (1/1) ... [2019-12-07 15:55:16,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16" (1/1) ... [2019-12-07 15:55:16,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16" (1/1) ... [2019-12-07 15:55:16,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:55:16,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:55:16,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:55:16,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:55:16,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/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 [2019-12-07 15:55:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:55:16,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:55:16,875 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:55:16,875 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 15:55:16,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:55:16 BoogieIcfgContainer [2019-12-07 15:55:16,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:55:16,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:55:16,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:55:16,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:55:16,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:55:16" (1/3) ... [2019-12-07 15:55:16,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50619fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:55:16, skipping insertion in model container [2019-12-07 15:55:16,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:55:16" (2/3) ... [2019-12-07 15:55:16,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50619fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:55:16, skipping insertion in model container [2019-12-07 15:55:16,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:55:16" (3/3) ... [2019-12-07 15:55:16,881 INFO L109 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn.c [2019-12-07 15:55:16,887 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:55:16,891 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 15:55:16,898 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 15:55:16,912 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:55:16,912 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:55:16,912 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:55:16,912 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:55:16,913 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:55:16,913 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:55:16,913 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:55:16,913 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:55:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-12-07 15:55:16,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 15:55:16,925 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:16,926 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 15:55:16,926 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:16,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:16,929 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-12-07 15:55:16,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:16,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210212538] [2019-12-07 15:55:16,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210212538] [2019-12-07 15:55:17,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:55:17,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:55:17,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477749085] [2019-12-07 15:55:17,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:55:17,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:17,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:55:17,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:55:17,055 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-12-07 15:55:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:17,082 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-12-07 15:55:17,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:55:17,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-12-07 15:55:17,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:17,089 INFO L225 Difference]: With dead ends: 20 [2019-12-07 15:55:17,089 INFO L226 Difference]: Without dead ends: 8 [2019-12-07 15:55:17,091 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:55:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-12-07 15:55:17,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-12-07 15:55:17,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 15:55:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-12-07 15:55:17,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2019-12-07 15:55:17,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:17,111 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-12-07 15:55:17,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:55:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-12-07 15:55:17,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 15:55:17,112 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:17,112 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 15:55:17,112 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:17,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,113 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2019-12-07 15:55:17,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877385843] [2019-12-07 15:55:17,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,138 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877385843] [2019-12-07 15:55:17,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:55:17,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:55:17,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779411854] [2019-12-07 15:55:17,139 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:55:17,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:17,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:55:17,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:55:17,140 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-12-07 15:55:17,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:17,163 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-12-07 15:55:17,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:55:17,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-07 15:55:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:17,164 INFO L225 Difference]: With dead ends: 15 [2019-12-07 15:55:17,164 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 15:55:17,165 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 [2019-12-07 15:55:17,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 15:55:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-12-07 15:55:17,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 15:55:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 15:55:17,167 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2019-12-07 15:55:17,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:17,167 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 15:55:17,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:55:17,168 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 15:55:17,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 15:55:17,168 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:17,168 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 15:55:17,168 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:17,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,168 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-12-07 15:55:17,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,169 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580876019] [2019-12-07 15:55:17,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580876019] [2019-12-07 15:55:17,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:55:17,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:55:17,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505258299] [2019-12-07 15:55:17,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:55:17,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:17,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:55:17,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:55:17,192 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-12-07 15:55:17,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:17,207 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-12-07 15:55:17,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:55:17,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-12-07 15:55:17,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:17,208 INFO L225 Difference]: With dead ends: 12 [2019-12-07 15:55:17,208 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 15:55:17,209 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 [2019-12-07 15:55:17,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 15:55:17,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 15:55:17,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 15:55:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-12-07 15:55:17,211 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2019-12-07 15:55:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:17,211 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-12-07 15:55:17,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:55:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-12-07 15:55:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:55:17,211 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:17,211 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-12-07 15:55:17,212 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,212 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-12-07 15:55:17,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831097142] [2019-12-07 15:55:17,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831097142] [2019-12-07 15:55:17,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33470568] [2019-12-07 15:55:17,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/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 [2019-12-07 15:55:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,282 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,285 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:17,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-12-07 15:55:17,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578125598] [2019-12-07 15:55:17,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:55:17,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:17,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:55:17,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:55:17,299 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2019-12-07 15:55:17,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:17,329 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-12-07 15:55:17,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:55:17,329 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 15:55:17,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:17,330 INFO L225 Difference]: With dead ends: 18 [2019-12-07 15:55:17,330 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 15:55:17,330 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:55:17,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 15:55:17,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-12-07 15:55:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 15:55:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 15:55:17,333 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2019-12-07 15:55:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:17,333 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 15:55:17,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:55:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 15:55:17,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 15:55:17,333 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:17,333 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-12-07 15:55:17,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:17,534 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:17,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,535 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-12-07 15:55:17,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994610683] [2019-12-07 15:55:17,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994610683] [2019-12-07 15:55:17,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487661674] [2019-12-07 15:55:17,614 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/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 [2019-12-07 15:55:17,635 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:55:17,635 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:17,636 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:55:17,637 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:17,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-12-07 15:55:17,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976830733] [2019-12-07 15:55:17,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 15:55:17,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:17,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:55:17,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:55:17,645 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2019-12-07 15:55:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:17,692 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-12-07 15:55:17,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:55:17,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-12-07 15:55:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:17,693 INFO L225 Difference]: With dead ends: 23 [2019-12-07 15:55:17,693 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 15:55:17,694 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-12-07 15:55:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 15:55:17,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-12-07 15:55:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 15:55:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-12-07 15:55:17,698 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2019-12-07 15:55:17,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:17,698 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-12-07 15:55:17,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 15:55:17,698 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-12-07 15:55:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 15:55:17,699 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:17,699 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-12-07 15:55:17,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:17,900 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:17,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:17,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-12-07 15:55:17,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:17,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85219625] [2019-12-07 15:55:17,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:17,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85219625] [2019-12-07 15:55:17,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209362702] [2019-12-07 15:55:17,987 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/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 [2019-12-07 15:55:18,014 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 15:55:18,014 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:18,015 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,016 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:18,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:18,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-12-07 15:55:18,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774913553] [2019-12-07 15:55:18,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 15:55:18,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:18,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 15:55:18,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:55:18,022 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 10 states. [2019-12-07 15:55:18,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:18,068 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2019-12-07 15:55:18,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 15:55:18,069 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-12-07 15:55:18,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:18,070 INFO L225 Difference]: With dead ends: 28 [2019-12-07 15:55:18,070 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 15:55:18,070 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-12-07 15:55:18,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 15:55:18,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-12-07 15:55:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 15:55:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-12-07 15:55:18,074 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2019-12-07 15:55:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:18,074 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-12-07 15:55:18,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 15:55:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-12-07 15:55:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 15:55:18,075 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:18,075 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2019-12-07 15:55:18,276 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:18,276 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:18,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:18,276 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2019-12-07 15:55:18,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:18,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185091124] [2019-12-07 15:55:18,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:18,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185091124] [2019-12-07 15:55:18,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994129302] [2019-12-07 15:55:18,367 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/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 [2019-12-07 15:55:18,389 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 15:55:18,389 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:18,390 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,391 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:18,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:18,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-12-07 15:55:18,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948778652] [2019-12-07 15:55:18,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 15:55:18,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:18,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 15:55:18,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:55:18,399 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 12 states. [2019-12-07 15:55:18,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:18,460 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2019-12-07 15:55:18,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 15:55:18,461 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2019-12-07 15:55:18,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:18,461 INFO L225 Difference]: With dead ends: 33 [2019-12-07 15:55:18,462 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 15:55:18,462 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2019-12-07 15:55:18,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 15:55:18,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-12-07 15:55:18,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 15:55:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2019-12-07 15:55:18,467 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2019-12-07 15:55:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:18,467 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2019-12-07 15:55:18,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 15:55:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2019-12-07 15:55:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 15:55:18,469 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:18,469 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2019-12-07 15:55:18,669 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:18,670 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:18,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:18,670 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2019-12-07 15:55:18,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:18,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824093743] [2019-12-07 15:55:18,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:18,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824093743] [2019-12-07 15:55:18,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435152187] [2019-12-07 15:55:18,794 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/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 [2019-12-07 15:55:18,821 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-12-07 15:55:18,821 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:18,822 INFO L264 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 15:55:18,823 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:18,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:18,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-12-07 15:55:18,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182650078] [2019-12-07 15:55:18,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 15:55:18,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:18,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 15:55:18,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-12-07 15:55:18,831 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 14 states. [2019-12-07 15:55:18,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:18,907 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2019-12-07 15:55:18,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 15:55:18,907 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2019-12-07 15:55:18,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:18,908 INFO L225 Difference]: With dead ends: 38 [2019-12-07 15:55:18,908 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 15:55:18,909 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2019-12-07 15:55:18,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 15:55:18,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-12-07 15:55:18,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 15:55:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2019-12-07 15:55:18,912 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2019-12-07 15:55:18,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:18,912 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2019-12-07 15:55:18,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 15:55:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2019-12-07 15:55:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-07 15:55:18,913 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:18,913 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2019-12-07 15:55:19,114 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:19,115 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:19,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:19,115 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2019-12-07 15:55:19,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:19,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793282390] [2019-12-07 15:55:19,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:19,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793282390] [2019-12-07 15:55:19,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904005791] [2019-12-07 15:55:19,307 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:19,350 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-12-07 15:55:19,351 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:19,352 INFO L264 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 15:55:19,353 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:19,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:19,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-12-07 15:55:19,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086878579] [2019-12-07 15:55:19,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 15:55:19,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:19,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 15:55:19,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-12-07 15:55:19,365 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 16 states. [2019-12-07 15:55:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:19,468 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2019-12-07 15:55:19,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 15:55:19,468 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2019-12-07 15:55:19,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:19,469 INFO L225 Difference]: With dead ends: 43 [2019-12-07 15:55:19,469 INFO L226 Difference]: Without dead ends: 42 [2019-12-07 15:55:19,469 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2019-12-07 15:55:19,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-12-07 15:55:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-12-07 15:55:19,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-12-07 15:55:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2019-12-07 15:55:19,473 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2019-12-07 15:55:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:19,473 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2019-12-07 15:55:19,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 15:55:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2019-12-07 15:55:19,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-07 15:55:19,474 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:19,474 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2019-12-07 15:55:19,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:19,675 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:19,675 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2019-12-07 15:55:19,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:19,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96806320] [2019-12-07 15:55:19,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:19,789 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96806320] [2019-12-07 15:55:19,789 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625215918] [2019-12-07 15:55:19,789 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:19,813 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 15:55:19,814 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:19,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:19,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-12-07 15:55:19,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847974083] [2019-12-07 15:55:19,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 15:55:19,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:19,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 15:55:19,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-12-07 15:55:19,825 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 18 states. [2019-12-07 15:55:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:19,921 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2019-12-07 15:55:19,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-12-07 15:55:19,921 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2019-12-07 15:55:19,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:19,922 INFO L225 Difference]: With dead ends: 48 [2019-12-07 15:55:19,922 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 15:55:19,922 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2019-12-07 15:55:19,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 15:55:19,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-12-07 15:55:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-12-07 15:55:19,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2019-12-07 15:55:19,926 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 40 [2019-12-07 15:55:19,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:19,926 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2019-12-07 15:55:19,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 15:55:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2019-12-07 15:55:19,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-12-07 15:55:19,927 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:19,927 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2019-12-07 15:55:20,127 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:20,128 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:20,128 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2019-12-07 15:55:20,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:20,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183212465] [2019-12-07 15:55:20,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:20,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183212465] [2019-12-07 15:55:20,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178203568] [2019-12-07 15:55:20,277 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:20,307 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:55:20,307 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:20,308 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 15:55:20,309 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:20,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:20,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-12-07 15:55:20,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893646217] [2019-12-07 15:55:20,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-12-07 15:55:20,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:20,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-12-07 15:55:20,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-12-07 15:55:20,318 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 20 states. [2019-12-07 15:55:20,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:20,429 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2019-12-07 15:55:20,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-12-07 15:55:20,429 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 45 [2019-12-07 15:55:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:20,430 INFO L225 Difference]: With dead ends: 53 [2019-12-07 15:55:20,430 INFO L226 Difference]: Without dead ends: 52 [2019-12-07 15:55:20,430 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2019-12-07 15:55:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-07 15:55:20,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2019-12-07 15:55:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-12-07 15:55:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2019-12-07 15:55:20,434 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 45 [2019-12-07 15:55:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:20,434 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2019-12-07 15:55:20,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-12-07 15:55:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2019-12-07 15:55:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 15:55:20,434 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:20,435 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2019-12-07 15:55:20,635 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:20,636 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:20,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2019-12-07 15:55:20,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:20,637 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519669310] [2019-12-07 15:55:20,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:20,857 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:20,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519669310] [2019-12-07 15:55:20,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009116395] [2019-12-07 15:55:20,858 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:20,896 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-12-07 15:55:20,896 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:20,896 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-07 15:55:20,898 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:20,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:20,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-12-07 15:55:20,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30426667] [2019-12-07 15:55:20,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 15:55:20,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:20,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 15:55:20,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-12-07 15:55:20,912 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 22 states. [2019-12-07 15:55:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:21,035 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2019-12-07 15:55:21,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-12-07 15:55:21,035 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 50 [2019-12-07 15:55:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:21,036 INFO L225 Difference]: With dead ends: 58 [2019-12-07 15:55:21,036 INFO L226 Difference]: Without dead ends: 57 [2019-12-07 15:55:21,037 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2019-12-07 15:55:21,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-12-07 15:55:21,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2019-12-07 15:55:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 15:55:21,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2019-12-07 15:55:21,040 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 50 [2019-12-07 15:55:21,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:21,040 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2019-12-07 15:55:21,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 15:55:21,040 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2019-12-07 15:55:21,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-12-07 15:55:21,041 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:21,041 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2019-12-07 15:55:21,241 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:21,242 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:21,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2019-12-07 15:55:21,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:21,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090984173] [2019-12-07 15:55:21,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:21,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090984173] [2019-12-07 15:55:21,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431166291] [2019-12-07 15:55:21,491 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:21,517 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 15:55:21,517 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:21,518 INFO L264 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2019-12-07 15:55:21,520 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:21,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:21,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2019-12-07 15:55:21,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173132294] [2019-12-07 15:55:21,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-07 15:55:21,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:21,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-07 15:55:21,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-12-07 15:55:21,530 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 24 states. [2019-12-07 15:55:21,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:21,657 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2019-12-07 15:55:21,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-12-07 15:55:21,657 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2019-12-07 15:55:21,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:21,657 INFO L225 Difference]: With dead ends: 63 [2019-12-07 15:55:21,657 INFO L226 Difference]: Without dead ends: 62 [2019-12-07 15:55:21,658 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=364, Invalid=826, Unknown=0, NotChecked=0, Total=1190 [2019-12-07 15:55:21,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-12-07 15:55:21,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2019-12-07 15:55:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-12-07 15:55:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2019-12-07 15:55:21,661 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 55 [2019-12-07 15:55:21,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:21,662 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2019-12-07 15:55:21,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-07 15:55:21,662 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2019-12-07 15:55:21,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-12-07 15:55:21,662 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:21,662 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2019-12-07 15:55:21,863 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:21,863 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:21,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:21,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2019-12-07 15:55:21,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:21,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740798005] [2019-12-07 15:55:21,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:22,078 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740798005] [2019-12-07 15:55:22,078 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193180203] [2019-12-07 15:55:22,078 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:22,120 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-12-07 15:55:22,121 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:22,122 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 25 conjunts are in the unsatisfiable core [2019-12-07 15:55:22,124 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:22,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:22,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2019-12-07 15:55:22,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630603916] [2019-12-07 15:55:22,139 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-12-07 15:55:22,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:22,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-12-07 15:55:22,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-12-07 15:55:22,140 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 26 states. [2019-12-07 15:55:22,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:22,300 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2019-12-07 15:55:22,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-12-07 15:55:22,301 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2019-12-07 15:55:22,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:22,301 INFO L225 Difference]: With dead ends: 68 [2019-12-07 15:55:22,301 INFO L226 Difference]: Without dead ends: 67 [2019-12-07 15:55:22,302 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2019-12-07 15:55:22,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-12-07 15:55:22,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2019-12-07 15:55:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 15:55:22,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2019-12-07 15:55:22,305 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 60 [2019-12-07 15:55:22,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:22,305 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2019-12-07 15:55:22,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-12-07 15:55:22,306 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2019-12-07 15:55:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-12-07 15:55:22,306 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:22,306 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2019-12-07 15:55:22,506 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:22,507 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:22,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:22,507 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2019-12-07 15:55:22,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:22,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426125033] [2019-12-07 15:55:22,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:22,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426125033] [2019-12-07 15:55:22,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345479164] [2019-12-07 15:55:22,748 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:22,798 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-12-07 15:55:22,798 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:22,799 INFO L264 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjunts are in the unsatisfiable core [2019-12-07 15:55:22,801 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:22,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:22,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2019-12-07 15:55:22,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238491121] [2019-12-07 15:55:22,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-07 15:55:22,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:22,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-07 15:55:22,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2019-12-07 15:55:22,818 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 28 states. [2019-12-07 15:55:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:22,999 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2019-12-07 15:55:22,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-12-07 15:55:22,999 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 65 [2019-12-07 15:55:22,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:23,000 INFO L225 Difference]: With dead ends: 73 [2019-12-07 15:55:23,000 INFO L226 Difference]: Without dead ends: 72 [2019-12-07 15:55:23,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=495, Invalid=1145, Unknown=0, NotChecked=0, Total=1640 [2019-12-07 15:55:23,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-12-07 15:55:23,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2019-12-07 15:55:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-12-07 15:55:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2019-12-07 15:55:23,004 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 65 [2019-12-07 15:55:23,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:23,004 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2019-12-07 15:55:23,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-07 15:55:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2019-12-07 15:55:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-12-07 15:55:23,005 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:23,005 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2019-12-07 15:55:23,205 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:23,206 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:23,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:23,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2019-12-07 15:55:23,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:23,207 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73079545] [2019-12-07 15:55:23,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:23,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73079545] [2019-12-07 15:55:23,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836071616] [2019-12-07 15:55:23,535 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:23,566 INFO L264 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 29 conjunts are in the unsatisfiable core [2019-12-07 15:55:23,567 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:23,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:23,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2019-12-07 15:55:23,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258123455] [2019-12-07 15:55:23,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-12-07 15:55:23,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:23,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-12-07 15:55:23,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2019-12-07 15:55:23,582 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 30 states. [2019-12-07 15:55:23,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:23,763 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2019-12-07 15:55:23,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-12-07 15:55:23,764 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2019-12-07 15:55:23,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:23,764 INFO L225 Difference]: With dead ends: 78 [2019-12-07 15:55:23,764 INFO L226 Difference]: Without dead ends: 77 [2019-12-07 15:55:23,765 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2019-12-07 15:55:23,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-12-07 15:55:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2019-12-07 15:55:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 15:55:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2019-12-07 15:55:23,769 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 70 [2019-12-07 15:55:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:23,769 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2019-12-07 15:55:23,769 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-12-07 15:55:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2019-12-07 15:55:23,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-12-07 15:55:23,770 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:23,770 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2019-12-07 15:55:23,971 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:23,971 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:23,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:23,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2019-12-07 15:55:23,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:23,972 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157716199] [2019-12-07 15:55:23,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:24,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157716199] [2019-12-07 15:55:24,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161300749] [2019-12-07 15:55:24,307 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:24,338 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:55:24,338 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:24,339 INFO L264 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2019-12-07 15:55:24,341 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:24,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:24,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2019-12-07 15:55:24,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821413702] [2019-12-07 15:55:24,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-12-07 15:55:24,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:24,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-12-07 15:55:24,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2019-12-07 15:55:24,358 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 32 states. [2019-12-07 15:55:24,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:24,563 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2019-12-07 15:55:24,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-12-07 15:55:24,563 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 75 [2019-12-07 15:55:24,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:24,564 INFO L225 Difference]: With dead ends: 83 [2019-12-07 15:55:24,564 INFO L226 Difference]: Without dead ends: 82 [2019-12-07 15:55:24,565 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=646, Invalid=1516, Unknown=0, NotChecked=0, Total=2162 [2019-12-07 15:55:24,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-12-07 15:55:24,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2019-12-07 15:55:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-12-07 15:55:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2019-12-07 15:55:24,568 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 75 [2019-12-07 15:55:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:24,568 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2019-12-07 15:55:24,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-12-07 15:55:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2019-12-07 15:55:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-12-07 15:55:24,569 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:24,569 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2019-12-07 15:55:24,769 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:24,770 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:24,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:24,770 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2019-12-07 15:55:24,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:24,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99917307] [2019-12-07 15:55:24,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:25,060 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:25,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99917307] [2019-12-07 15:55:25,061 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34586595] [2019-12-07 15:55:25,061 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:25,106 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-12-07 15:55:25,106 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:25,107 INFO L264 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 33 conjunts are in the unsatisfiable core [2019-12-07 15:55:25,108 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:25,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:25,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2019-12-07 15:55:25,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026184938] [2019-12-07 15:55:25,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-12-07 15:55:25,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:25,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-12-07 15:55:25,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2019-12-07 15:55:25,120 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 34 states. [2019-12-07 15:55:25,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:25,343 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2019-12-07 15:55:25,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-12-07 15:55:25,344 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 80 [2019-12-07 15:55:25,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:25,344 INFO L225 Difference]: With dead ends: 88 [2019-12-07 15:55:25,344 INFO L226 Difference]: Without dead ends: 87 [2019-12-07 15:55:25,345 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2019-12-07 15:55:25,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-12-07 15:55:25,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2019-12-07 15:55:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-12-07 15:55:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2019-12-07 15:55:25,348 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 80 [2019-12-07 15:55:25,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:25,348 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2019-12-07 15:55:25,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-12-07 15:55:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2019-12-07 15:55:25,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-12-07 15:55:25,349 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:25,349 INFO L410 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2019-12-07 15:55:25,549 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:25,550 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:25,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:25,550 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2019-12-07 15:55:25,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:25,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340485141] [2019-12-07 15:55:25,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:25,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340485141] [2019-12-07 15:55:25,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674849299] [2019-12-07 15:55:25,965 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:25,998 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 15:55:25,998 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:25,999 INFO L264 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 35 conjunts are in the unsatisfiable core [2019-12-07 15:55:26,001 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:26,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:26,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2019-12-07 15:55:26,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569665011] [2019-12-07 15:55:26,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-07 15:55:26,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:26,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-07 15:55:26,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2019-12-07 15:55:26,019 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 36 states. [2019-12-07 15:55:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:26,258 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2019-12-07 15:55:26,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-12-07 15:55:26,259 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 85 [2019-12-07 15:55:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:26,259 INFO L225 Difference]: With dead ends: 93 [2019-12-07 15:55:26,259 INFO L226 Difference]: Without dead ends: 92 [2019-12-07 15:55:26,260 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=817, Invalid=1939, Unknown=0, NotChecked=0, Total=2756 [2019-12-07 15:55:26,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-12-07 15:55:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2019-12-07 15:55:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-12-07 15:55:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2019-12-07 15:55:26,262 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 85 [2019-12-07 15:55:26,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:26,263 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2019-12-07 15:55:26,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-07 15:55:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2019-12-07 15:55:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-12-07 15:55:26,263 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:26,263 INFO L410 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2019-12-07 15:55:26,464 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:26,464 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:26,464 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2019-12-07 15:55:26,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:26,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433356780] [2019-12-07 15:55:26,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:26,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433356780] [2019-12-07 15:55:26,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843522550] [2019-12-07 15:55:26,937 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:26,999 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-12-07 15:55:27,000 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:27,001 INFO L264 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 37 conjunts are in the unsatisfiable core [2019-12-07 15:55:27,002 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:27,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:27,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2019-12-07 15:55:27,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897317567] [2019-12-07 15:55:27,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-12-07 15:55:27,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:27,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-12-07 15:55:27,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2019-12-07 15:55:27,016 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 38 states. [2019-12-07 15:55:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:27,285 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2019-12-07 15:55:27,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-12-07 15:55:27,285 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 90 [2019-12-07 15:55:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:27,285 INFO L225 Difference]: With dead ends: 98 [2019-12-07 15:55:27,286 INFO L226 Difference]: Without dead ends: 97 [2019-12-07 15:55:27,286 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2019-12-07 15:55:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-12-07 15:55:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2019-12-07 15:55:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-12-07 15:55:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2019-12-07 15:55:27,289 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 90 [2019-12-07 15:55:27,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:27,289 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2019-12-07 15:55:27,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-12-07 15:55:27,289 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2019-12-07 15:55:27,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-12-07 15:55:27,290 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:27,290 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2019-12-07 15:55:27,490 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:27,491 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:27,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:27,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2019-12-07 15:55:27,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:27,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544443956] [2019-12-07 15:55:27,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:27,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544443956] [2019-12-07 15:55:27,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992749754] [2019-12-07 15:55:27,931 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:27,990 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-12-07 15:55:27,990 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:27,991 INFO L264 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 39 conjunts are in the unsatisfiable core [2019-12-07 15:55:27,992 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:28,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:28,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2019-12-07 15:55:28,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594037842] [2019-12-07 15:55:28,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-12-07 15:55:28,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:28,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-12-07 15:55:28,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2019-12-07 15:55:28,012 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 40 states. [2019-12-07 15:55:28,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:28,298 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2019-12-07 15:55:28,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-12-07 15:55:28,298 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 95 [2019-12-07 15:55:28,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:28,299 INFO L225 Difference]: With dead ends: 103 [2019-12-07 15:55:28,299 INFO L226 Difference]: Without dead ends: 102 [2019-12-07 15:55:28,300 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2019-12-07 15:55:28,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-12-07 15:55:28,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2019-12-07 15:55:28,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-12-07 15:55:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2019-12-07 15:55:28,302 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 95 [2019-12-07 15:55:28,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:28,302 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2019-12-07 15:55:28,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-12-07 15:55:28,302 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2019-12-07 15:55:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-12-07 15:55:28,303 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:28,303 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2019-12-07 15:55:28,503 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:28,503 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:28,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:28,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2019-12-07 15:55:28,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:28,504 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600292994] [2019-12-07 15:55:28,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:28,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600292994] [2019-12-07 15:55:28,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762883469] [2019-12-07 15:55:28,951 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:28,985 INFO L264 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 41 conjunts are in the unsatisfiable core [2019-12-07 15:55:28,986 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:29,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:29,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2019-12-07 15:55:29,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338411907] [2019-12-07 15:55:29,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-12-07 15:55:29,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:29,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-12-07 15:55:29,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2019-12-07 15:55:29,004 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 42 states. [2019-12-07 15:55:29,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:29,302 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2019-12-07 15:55:29,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-12-07 15:55:29,302 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 100 [2019-12-07 15:55:29,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:29,303 INFO L225 Difference]: With dead ends: 108 [2019-12-07 15:55:29,304 INFO L226 Difference]: Without dead ends: 107 [2019-12-07 15:55:29,305 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1111, Invalid=2671, Unknown=0, NotChecked=0, Total=3782 [2019-12-07 15:55:29,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-12-07 15:55:29,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2019-12-07 15:55:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-12-07 15:55:29,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2019-12-07 15:55:29,307 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 100 [2019-12-07 15:55:29,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:29,307 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2019-12-07 15:55:29,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-12-07 15:55:29,307 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2019-12-07 15:55:29,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-12-07 15:55:29,307 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:29,308 INFO L410 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1] [2019-12-07 15:55:29,508 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:29,508 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:29,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:29,509 INFO L82 PathProgramCache]: Analyzing trace with hash -119266781, now seen corresponding path program 20 times [2019-12-07 15:55:29,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:29,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001247870] [2019-12-07 15:55:29,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:29,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001247870] [2019-12-07 15:55:29,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344052793] [2019-12-07 15:55:29,973 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:30,009 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:55:30,009 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:30,010 INFO L264 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 43 conjunts are in the unsatisfiable core [2019-12-07 15:55:30,012 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:30,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:30,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2019-12-07 15:55:30,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438934173] [2019-12-07 15:55:30,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-12-07 15:55:30,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:30,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-12-07 15:55:30,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2019-12-07 15:55:30,027 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 44 states. [2019-12-07 15:55:30,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:30,352 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2019-12-07 15:55:30,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-12-07 15:55:30,352 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 105 [2019-12-07 15:55:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:30,353 INFO L225 Difference]: With dead ends: 113 [2019-12-07 15:55:30,353 INFO L226 Difference]: Without dead ends: 112 [2019-12-07 15:55:30,354 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1219, Invalid=2941, Unknown=0, NotChecked=0, Total=4160 [2019-12-07 15:55:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-12-07 15:55:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2019-12-07 15:55:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-12-07 15:55:30,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2019-12-07 15:55:30,357 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 105 [2019-12-07 15:55:30,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:30,357 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2019-12-07 15:55:30,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-12-07 15:55:30,358 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2019-12-07 15:55:30,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-12-07 15:55:30,358 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:30,358 INFO L410 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1] [2019-12-07 15:55:30,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:30,559 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:30,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:30,559 INFO L82 PathProgramCache]: Analyzing trace with hash 953284081, now seen corresponding path program 21 times [2019-12-07 15:55:30,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:30,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022048553] [2019-12-07 15:55:30,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:31,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022048553] [2019-12-07 15:55:31,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369466711] [2019-12-07 15:55:31,080 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:31,149 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-12-07 15:55:31,149 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:31,150 INFO L264 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 45 conjunts are in the unsatisfiable core [2019-12-07 15:55:31,151 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:31,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:31,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2019-12-07 15:55:31,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451241322] [2019-12-07 15:55:31,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-12-07 15:55:31,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:31,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-12-07 15:55:31,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-12-07 15:55:31,168 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 46 states. [2019-12-07 15:55:31,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:31,535 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2019-12-07 15:55:31,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-12-07 15:55:31,535 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 110 [2019-12-07 15:55:31,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:31,536 INFO L225 Difference]: With dead ends: 118 [2019-12-07 15:55:31,536 INFO L226 Difference]: Without dead ends: 117 [2019-12-07 15:55:31,538 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2019-12-07 15:55:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-12-07 15:55:31,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2019-12-07 15:55:31,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-12-07 15:55:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2019-12-07 15:55:31,541 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 110 [2019-12-07 15:55:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:31,541 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2019-12-07 15:55:31,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-12-07 15:55:31,541 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2019-12-07 15:55:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-12-07 15:55:31,542 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:31,542 INFO L410 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2019-12-07 15:55:31,742 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:31,743 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:31,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 22 times [2019-12-07 15:55:31,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:31,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214523045] [2019-12-07 15:55:31,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:32,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214523045] [2019-12-07 15:55:32,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004335617] [2019-12-07 15:55:32,354 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:32,390 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 15:55:32,390 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:32,392 INFO L264 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 47 conjunts are in the unsatisfiable core [2019-12-07 15:55:32,393 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:32,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:32,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:32,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2019-12-07 15:55:32,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974526167] [2019-12-07 15:55:32,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-12-07 15:55:32,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:32,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-12-07 15:55:32,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 15:55:32,411 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 48 states. [2019-12-07 15:55:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:32,802 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2019-12-07 15:55:32,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-12-07 15:55:32,803 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 115 [2019-12-07 15:55:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:32,803 INFO L225 Difference]: With dead ends: 123 [2019-12-07 15:55:32,803 INFO L226 Difference]: Without dead ends: 122 [2019-12-07 15:55:32,805 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1450, Invalid=3520, Unknown=0, NotChecked=0, Total=4970 [2019-12-07 15:55:32,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-12-07 15:55:32,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2019-12-07 15:55:32,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-12-07 15:55:32,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2019-12-07 15:55:32,807 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 115 [2019-12-07 15:55:32,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:32,807 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2019-12-07 15:55:32,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-12-07 15:55:32,808 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2019-12-07 15:55:32,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-12-07 15:55:32,808 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:32,808 INFO L410 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1] [2019-12-07 15:55:33,008 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:33,009 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:33,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:33,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1642054351, now seen corresponding path program 23 times [2019-12-07 15:55:33,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:33,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787021797] [2019-12-07 15:55:33,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:33,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787021797] [2019-12-07 15:55:33,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8859069] [2019-12-07 15:55:33,640 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:33,749 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-12-07 15:55:33,749 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:33,751 INFO L264 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 49 conjunts are in the unsatisfiable core [2019-12-07 15:55:33,752 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:33,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:33,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2019-12-07 15:55:33,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650773236] [2019-12-07 15:55:33,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-12-07 15:55:33,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:33,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-12-07 15:55:33,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2019-12-07 15:55:33,771 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 50 states. [2019-12-07 15:55:34,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:34,154 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2019-12-07 15:55:34,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-12-07 15:55:34,154 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 120 [2019-12-07 15:55:34,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:34,155 INFO L225 Difference]: With dead ends: 128 [2019-12-07 15:55:34,155 INFO L226 Difference]: Without dead ends: 127 [2019-12-07 15:55:34,156 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1573, Invalid=3829, Unknown=0, NotChecked=0, Total=5402 [2019-12-07 15:55:34,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-12-07 15:55:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2019-12-07 15:55:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-12-07 15:55:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2019-12-07 15:55:34,158 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 120 [2019-12-07 15:55:34,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:34,159 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2019-12-07 15:55:34,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-12-07 15:55:34,159 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2019-12-07 15:55:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-12-07 15:55:34,159 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:34,160 INFO L410 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1] [2019-12-07 15:55:34,360 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:34,360 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:34,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:34,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1546480733, now seen corresponding path program 24 times [2019-12-07 15:55:34,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:34,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682240309] [2019-12-07 15:55:34,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:35,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:35,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682240309] [2019-12-07 15:55:35,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777355660] [2019-12-07 15:55:35,030 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:35,114 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2019-12-07 15:55:35,114 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:35,115 INFO L264 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 51 conjunts are in the unsatisfiable core [2019-12-07 15:55:35,117 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:35,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:35,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2019-12-07 15:55:35,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292605473] [2019-12-07 15:55:35,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-12-07 15:55:35,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:35,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-12-07 15:55:35,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2019-12-07 15:55:35,136 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 52 states. [2019-12-07 15:55:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:35,571 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2019-12-07 15:55:35,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-12-07 15:55:35,571 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 125 [2019-12-07 15:55:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:35,572 INFO L225 Difference]: With dead ends: 133 [2019-12-07 15:55:35,572 INFO L226 Difference]: Without dead ends: 132 [2019-12-07 15:55:35,573 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1701, Invalid=4151, Unknown=0, NotChecked=0, Total=5852 [2019-12-07 15:55:35,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-12-07 15:55:35,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2019-12-07 15:55:35,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-12-07 15:55:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2019-12-07 15:55:35,575 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 125 [2019-12-07 15:55:35,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:35,575 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2019-12-07 15:55:35,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-12-07 15:55:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2019-12-07 15:55:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-12-07 15:55:35,576 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:35,576 INFO L410 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1] [2019-12-07 15:55:35,776 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:35,776 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:35,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:35,777 INFO L82 PathProgramCache]: Analyzing trace with hash -525437839, now seen corresponding path program 25 times [2019-12-07 15:55:35,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:35,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414602025] [2019-12-07 15:55:35,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:36,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414602025] [2019-12-07 15:55:36,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307423359] [2019-12-07 15:55:36,455 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:36,495 INFO L264 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 53 conjunts are in the unsatisfiable core [2019-12-07 15:55:36,497 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:36,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:36,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2019-12-07 15:55:36,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714541184] [2019-12-07 15:55:36,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2019-12-07 15:55:36,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:36,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2019-12-07 15:55:36,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2019-12-07 15:55:36,522 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 54 states. [2019-12-07 15:55:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:37,004 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2019-12-07 15:55:37,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-12-07 15:55:37,004 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 130 [2019-12-07 15:55:37,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:37,005 INFO L225 Difference]: With dead ends: 138 [2019-12-07 15:55:37,005 INFO L226 Difference]: Without dead ends: 137 [2019-12-07 15:55:37,006 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1834, Invalid=4486, Unknown=0, NotChecked=0, Total=6320 [2019-12-07 15:55:37,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-12-07 15:55:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2019-12-07 15:55:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-12-07 15:55:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2019-12-07 15:55:37,009 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 130 [2019-12-07 15:55:37,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:37,010 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2019-12-07 15:55:37,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 54 states. [2019-12-07 15:55:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2019-12-07 15:55:37,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-12-07 15:55:37,010 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:37,010 INFO L410 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1] [2019-12-07 15:55:37,211 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:37,211 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:37,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:37,212 INFO L82 PathProgramCache]: Analyzing trace with hash 298116195, now seen corresponding path program 26 times [2019-12-07 15:55:37,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:37,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59180208] [2019-12-07 15:55:37,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:37,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:37,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59180208] [2019-12-07 15:55:37,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548137286] [2019-12-07 15:55:37,955 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:37,996 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:55:37,996 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:37,998 INFO L264 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 55 conjunts are in the unsatisfiable core [2019-12-07 15:55:37,999 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:38,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:38,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2019-12-07 15:55:38,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535553566] [2019-12-07 15:55:38,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 56 states [2019-12-07 15:55:38,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:38,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2019-12-07 15:55:38,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2019-12-07 15:55:38,021 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 56 states. [2019-12-07 15:55:38,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:38,494 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2019-12-07 15:55:38,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-12-07 15:55:38,494 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 135 [2019-12-07 15:55:38,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:38,495 INFO L225 Difference]: With dead ends: 143 [2019-12-07 15:55:38,495 INFO L226 Difference]: Without dead ends: 142 [2019-12-07 15:55:38,496 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1972, Invalid=4834, Unknown=0, NotChecked=0, Total=6806 [2019-12-07 15:55:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-12-07 15:55:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2019-12-07 15:55:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-12-07 15:55:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2019-12-07 15:55:38,498 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 135 [2019-12-07 15:55:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:38,498 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2019-12-07 15:55:38,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 56 states. [2019-12-07 15:55:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2019-12-07 15:55:38,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-12-07 15:55:38,499 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:38,499 INFO L410 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1] [2019-12-07 15:55:38,699 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:38,700 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:38,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:38,700 INFO L82 PathProgramCache]: Analyzing trace with hash 626039729, now seen corresponding path program 27 times [2019-12-07 15:55:38,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:38,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64727196] [2019-12-07 15:55:38,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:39,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64727196] [2019-12-07 15:55:39,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264441630] [2019-12-07 15:55:39,490 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:39,596 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2019-12-07 15:55:39,597 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:39,598 INFO L264 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 57 conjunts are in the unsatisfiable core [2019-12-07 15:55:39,599 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:39,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:39,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2019-12-07 15:55:39,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676767892] [2019-12-07 15:55:39,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 58 states [2019-12-07 15:55:39,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:39,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2019-12-07 15:55:39,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2019-12-07 15:55:39,622 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 58 states. [2019-12-07 15:55:40,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:40,147 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2019-12-07 15:55:40,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-12-07 15:55:40,148 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 140 [2019-12-07 15:55:40,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:40,149 INFO L225 Difference]: With dead ends: 148 [2019-12-07 15:55:40,149 INFO L226 Difference]: Without dead ends: 147 [2019-12-07 15:55:40,149 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2115, Invalid=5195, Unknown=0, NotChecked=0, Total=7310 [2019-12-07 15:55:40,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-12-07 15:55:40,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2019-12-07 15:55:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-12-07 15:55:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2019-12-07 15:55:40,152 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 140 [2019-12-07 15:55:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:40,152 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2019-12-07 15:55:40,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 58 states. [2019-12-07 15:55:40,152 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2019-12-07 15:55:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-12-07 15:55:40,152 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:40,153 INFO L410 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1] [2019-12-07 15:55:40,353 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:40,353 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:40,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:40,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1553548579, now seen corresponding path program 28 times [2019-12-07 15:55:40,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:40,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029091632] [2019-12-07 15:55:40,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:41,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029091632] [2019-12-07 15:55:41,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187386221] [2019-12-07 15:55:41,196 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:41,238 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 15:55:41,238 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:41,240 INFO L264 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 59 conjunts are in the unsatisfiable core [2019-12-07 15:55:41,241 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:41,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:41,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2019-12-07 15:55:41,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201944518] [2019-12-07 15:55:41,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2019-12-07 15:55:41,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:41,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2019-12-07 15:55:41,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2019-12-07 15:55:41,266 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 60 states. [2019-12-07 15:55:41,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:41,860 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2019-12-07 15:55:41,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-12-07 15:55:41,861 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 145 [2019-12-07 15:55:41,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:41,861 INFO L225 Difference]: With dead ends: 153 [2019-12-07 15:55:41,861 INFO L226 Difference]: Without dead ends: 152 [2019-12-07 15:55:41,862 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2263, Invalid=5569, Unknown=0, NotChecked=0, Total=7832 [2019-12-07 15:55:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-12-07 15:55:41,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2019-12-07 15:55:41,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-12-07 15:55:41,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2019-12-07 15:55:41,865 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 145 [2019-12-07 15:55:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:41,865 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2019-12-07 15:55:41,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 60 states. [2019-12-07 15:55:41,865 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2019-12-07 15:55:41,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-12-07 15:55:41,865 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:41,866 INFO L410 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1] [2019-12-07 15:55:42,066 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:42,066 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:42,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:42,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1747275023, now seen corresponding path program 29 times [2019-12-07 15:55:42,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:42,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045184689] [2019-12-07 15:55:42,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:42,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045184689] [2019-12-07 15:55:42,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306867109] [2019-12-07 15:55:42,967 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:43,152 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-12-07 15:55:43,152 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:43,153 INFO L264 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 61 conjunts are in the unsatisfiable core [2019-12-07 15:55:43,155 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:43,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:43,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2019-12-07 15:55:43,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173614715] [2019-12-07 15:55:43,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 62 states [2019-12-07 15:55:43,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:43,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2019-12-07 15:55:43,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2019-12-07 15:55:43,191 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 62 states. [2019-12-07 15:55:43,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:55:43,768 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2019-12-07 15:55:43,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-12-07 15:55:43,769 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 150 [2019-12-07 15:55:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:55:43,770 INFO L225 Difference]: With dead ends: 158 [2019-12-07 15:55:43,770 INFO L226 Difference]: Without dead ends: 157 [2019-12-07 15:55:43,770 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2019-12-07 15:55:43,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-12-07 15:55:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2019-12-07 15:55:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-12-07 15:55:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2019-12-07 15:55:43,773 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 150 [2019-12-07 15:55:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:55:43,773 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2019-12-07 15:55:43,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 62 states. [2019-12-07 15:55:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2019-12-07 15:55:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-12-07 15:55:43,774 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:55:43,774 INFO L410 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1] [2019-12-07 15:55:43,974 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:43,974 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:55:43,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:55:43,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1661225501, now seen corresponding path program 30 times [2019-12-07 15:55:43,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:55:43,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803591063] [2019-12-07 15:55:43,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:55:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:55:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 1 proven. 2294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:50,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803591063] [2019-12-07 15:55:50,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906411971] [2019-12-07 15:55:50,541 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:55:50,675 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2019-12-07 15:55:50,676 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:55:50,677 INFO L264 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 63 conjunts are in the unsatisfiable core [2019-12-07 15:55:50,680 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:55:54,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:55:54,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:55:54,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 62] total 183 [2019-12-07 15:55:54,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434839304] [2019-12-07 15:55:54,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 185 states [2019-12-07 15:55:54,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:55:54,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2019-12-07 15:55:54,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2321, Invalid=31719, Unknown=0, NotChecked=0, Total=34040 [2019-12-07 15:55:54,324 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 185 states. [2019-12-07 15:56:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:56:06,827 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2019-12-07 15:56:06,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2019-12-07 15:56:06,827 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 155 [2019-12-07 15:56:06,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:56:06,827 INFO L225 Difference]: With dead ends: 156 [2019-12-07 15:56:06,827 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:56:06,829 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23314 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=5110, Invalid=70790, Unknown=0, NotChecked=0, Total=75900 [2019-12-07 15:56:06,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:56:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:56:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:56:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:56:06,829 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2019-12-07 15:56:06,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:56:06,830 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:56:06,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 185 states. [2019-12-07 15:56:06,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:56:06,830 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:56:07,030 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:56:07,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 15:56:07,685 WARN L192 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 108 [2019-12-07 15:56:07,689 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2019-12-07 15:56:07,689 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 15:56:07,689 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2019-12-07 15:56:07,690 INFO L242 CegarLoopResult]: At program point L19(lines 18 20) the Hoare annotation is: (<= ULTIMATE.start_mlog_~x 2147483647) [2019-12-07 15:56:07,690 INFO L246 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2019-12-07 15:56:07,690 INFO L246 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-12-07 15:56:07,690 INFO L242 CegarLoopResult]: At program point L7-2(lines 7 12) the Hoare annotation is: (let ((.cse1 (< 0 (+ ULTIMATE.start_mlog_~x 1))) (.cse0 (div ULTIMATE.start_mlog_~x 2)) (.cse2 (<= 0 ULTIMATE.start_mlog_~res~0))) (or (and (<= (+ .cse0 (* 16 ULTIMATE.start_mlog_~res~0)) 431) .cse1 .cse2) (and .cse1 (<= (+ .cse0 (* 16777216 ULTIMATE.start_mlog_~res~0)) 117440511) .cse2) (and .cse1 (<= (+ .cse0 (* 2048 ULTIMATE.start_mlog_~res~0)) 40959) .cse2) (and .cse1 .cse2 (<= (+ .cse0 (* 4194304 ULTIMATE.start_mlog_~res~0)) 37748735)) (and .cse1 .cse2 (<= (+ .cse0 (* 67108864 ULTIMATE.start_mlog_~res~0)) 335544319)) (and .cse1 .cse2 (<= (+ .cse0 (* 32768 ULTIMATE.start_mlog_~res~0)) 524287)) (and .cse1 .cse2 (<= (+ .cse0 (* 524288 ULTIMATE.start_mlog_~res~0)) 6291455)) (and (<= (+ .cse0 (* 131072 ULTIMATE.start_mlog_~res~0)) 1835007) .cse1 .cse2) (and (<= (+ .cse0 (* 64 ULTIMATE.start_mlog_~res~0)) 1599) .cse1 .cse2) (and .cse1 (<= (+ .cse0 (* 268435456 ULTIMATE.start_mlog_~res~0)) 805306367) .cse2) (and .cse1 .cse2 (<= (+ .cse0 (* 2097152 ULTIMATE.start_mlog_~res~0)) 20971519)) (and (<= (+ .cse0 (* 4 ULTIMATE.start_mlog_~res~0)) 115) .cse1 .cse2) (and .cse1 (<= (+ .cse0 ULTIMATE.start_mlog_~res~0) 30) .cse2) (and (<= (+ .cse0 (* 512 ULTIMATE.start_mlog_~res~0)) 11263) .cse1 .cse2) (and .cse1 (<= (+ .cse0 (* 8192 ULTIMATE.start_mlog_~res~0)) 147455) .cse2) (and .cse2 (<= ULTIMATE.start_mlog_~res~0 0) (<= ULTIMATE.start_mlog_~x 2147483647)) (and .cse1 (<= (+ .cse0 (* 256 ULTIMATE.start_mlog_~res~0)) 5887) .cse2))) [2019-12-07 15:56:07,690 INFO L246 CegarLoopResult]: For program point L7-3(lines 7 12) no Hoare annotation was computed. [2019-12-07 15:56:07,690 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2019-12-07 15:56:07,690 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2019-12-07 15:56:07,691 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 15:56:07,691 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 15:56:07,691 INFO L242 CegarLoopResult]: At program point L14(lines 3 16) the Hoare annotation is: (<= ULTIMATE.start_mlog_~x 2147483647) [2019-12-07 15:56:07,691 INFO L246 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2019-12-07 15:56:07,691 INFO L246 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2019-12-07 15:56:07,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:56:07 BoogieIcfgContainer [2019-12-07 15:56:07,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:56:07,710 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:56:07,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:56:07,711 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:56:07,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:55:16" (3/4) ... [2019-12-07 15:56:07,714 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:56:07,721 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 15:56:07,721 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 15:56:07,749 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_28a1abc3-854c-4bbc-bef1-e1c21ba0297d/bin/uautomizer/witness.graphml [2019-12-07 15:56:07,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:56:07,750 INFO L168 Benchmark]: Toolchain (without parser) took 51223.78 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 278.4 MB). Free memory was 946.0 MB in the beginning and 1.2 GB in the end (delta: -302.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:56:07,751 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:56:07,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -140.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:56:07,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:56:07,752 INFO L168 Benchmark]: Boogie Preprocessor took 11.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:56:07,752 INFO L168 Benchmark]: RCFGBuilder took 145.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:56:07,752 INFO L168 Benchmark]: TraceAbstraction took 50833.38 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 186.6 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -182.5 MB). Peak memory consumption was 488.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:56:07,752 INFO L168 Benchmark]: Witness Printer took 38.96 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:56:07,754 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -140.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 145.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 50833.38 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 186.6 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -182.5 MB). Peak memory consumption was 488.5 MB. Max. memory is 11.5 GB. * Witness Printer took 38.96 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: 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: 7]: Loop Invariant Derived loop invariant: (((((((((((((((((x / 2 + 16 * res <= 431 && 0 < x + 1) && 0 <= res) || ((0 < x + 1 && x / 2 + 16777216 * res <= 117440511) && 0 <= res)) || ((0 < x + 1 && x / 2 + 2048 * res <= 40959) && 0 <= res)) || ((0 < x + 1 && 0 <= res) && x / 2 + 4194304 * res <= 37748735)) || ((0 < x + 1 && 0 <= res) && x / 2 + 67108864 * res <= 335544319)) || ((0 < x + 1 && 0 <= res) && x / 2 + 32768 * res <= 524287)) || ((0 < x + 1 && 0 <= res) && x / 2 + 524288 * res <= 6291455)) || ((x / 2 + 131072 * res <= 1835007 && 0 < x + 1) && 0 <= res)) || ((x / 2 + 64 * res <= 1599 && 0 < x + 1) && 0 <= res)) || ((0 < x + 1 && x / 2 + 268435456 * res <= 805306367) && 0 <= res)) || ((0 < x + 1 && 0 <= res) && x / 2 + 2097152 * res <= 20971519)) || ((x / 2 + 4 * res <= 115 && 0 < x + 1) && 0 <= res)) || ((0 < x + 1 && x / 2 + res <= 30) && 0 <= res)) || ((x / 2 + 512 * res <= 11263 && 0 < x + 1) && 0 <= res)) || ((0 < x + 1 && x / 2 + 8192 * res <= 147455) && 0 <= res)) || ((0 <= res && res <= 0) && x <= 2147483647)) || ((0 < x + 1 && x / 2 + 256 * res <= 5887) && 0 <= res) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: SAFE, OverallTime: 50.1s, OverallIterations: 33, TraceHistogramMax: 31, AutomataDifference: 20.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, HoareTripleCheckerStatistics: 133 SDtfs, 2085 SDslu, 2101 SDs, 0 SdLazy, 15599 SolverSat, 327 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4059 GetRequests, 2385 SyntacticMatches, 0 SemanticMatches, 1674 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36364 ImplicationChecksByTransitivity, 31.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 33 MinimizatonAttempts, 31 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 303 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 700 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 20.9s InterpolantComputationTime, 4964 NumberOfCodeBlocks, 4964 NumberOfCodeBlocksAsserted, 323 NumberOfCheckSat, 4901 ConstructedInterpolants, 0 QuantifiedInterpolants, 1680097 SizeOfPredicates, 495 NumberOfNonLiveVariables, 5655 ConjunctsInSsa, 1020 ConjunctsInUnsatCore, 63 InterpolantComputations, 3 PerfectInterpolantSequences, 1/48670 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...