./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/TwoWay.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/TwoWay.c -s /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/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 dd635190a9aa277670265f46b90ecce0c321a2a9 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:55:35,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:55:35,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:55:36,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:55:36,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:55:36,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:55:36,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:55:36,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:55:36,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:55:36,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:55:36,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:55:36,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:55:36,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:55:36,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:55:36,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:55:36,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:55:36,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:55:36,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:55:36,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:55:36,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:55:36,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:55:36,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:55:36,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:55:36,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:55:36,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:55:36,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:55:36,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:55:36,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:55:36,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:55:36,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:55:36,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:55:36,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:55:36,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:55:36,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:55:36,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:55:36,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:55:36,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:55:36,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:55:36,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:55:36,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:55:36,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:55:36,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-25 08:55:36,078 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:55:36,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:55:36,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:55:36,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:55:36,080 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:55:36,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:55:36,080 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:55:36,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:55:36,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:55:36,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:55:36,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:55:36,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:55:36,081 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-25 08:55:36,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:55:36,082 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:55:36,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:55:36,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:55:36,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:55:36,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:55:36,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:55:36,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:55:36,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:55:36,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:55:36,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:55:36,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:55:36,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:55:36,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:55:36,084 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_599ec372-4f19-4847-9167-c4e38229fbc0/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 -> dd635190a9aa277670265f46b90ecce0c321a2a9 [2019-11-25 08:55:36,257 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:55:36,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:55:36,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:55:36,277 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:55:36,278 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:55:36,278 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/TwoWay.c [2019-11-25 08:55:36,339 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/data/b3a9e1766/caec5e019648465c9604873cee4b7eb0/FLAG397bab5e0 [2019-11-25 08:55:36,727 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:55:36,728 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/sv-benchmarks/c/termination-numeric/TwoWay.c [2019-11-25 08:55:36,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/data/b3a9e1766/caec5e019648465c9604873cee4b7eb0/FLAG397bab5e0 [2019-11-25 08:55:37,137 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/data/b3a9e1766/caec5e019648465c9604873cee4b7eb0 [2019-11-25 08:55:37,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:55:37,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:55:37,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:55:37,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:55:37,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:55:37,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:55:37" (1/1) ... [2019-11-25 08:55:37,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc26540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37, skipping insertion in model container [2019-11-25 08:55:37,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:55:37" (1/1) ... [2019-11-25 08:55:37,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:55:37,169 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:55:37,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:55:37,307 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:55:37,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:55:37,397 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:55:37,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37 WrapperNode [2019-11-25 08:55:37,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:55:37,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:55:37,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:55:37,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:55:37,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37" (1/1) ... [2019-11-25 08:55:37,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37" (1/1) ... [2019-11-25 08:55:37,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:55:37,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:55:37,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:55:37,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:55:37,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37" (1/1) ... [2019-11-25 08:55:37,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37" (1/1) ... [2019-11-25 08:55:37,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37" (1/1) ... [2019-11-25 08:55:37,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37" (1/1) ... [2019-11-25 08:55:37,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37" (1/1) ... [2019-11-25 08:55:37,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37" (1/1) ... [2019-11-25 08:55:37,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37" (1/1) ... [2019-11-25 08:55:37,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:55:37,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:55:37,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:55:37,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:55:37,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:55:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2019-11-25 08:55:37,512 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2019-11-25 08:55:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:55:37,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:55:37,823 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:55:37,823 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:55:37,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:37 BoogieIcfgContainer [2019-11-25 08:55:37,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:55:37,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:55:37,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:55:37,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:55:37,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:55:37" (1/3) ... [2019-11-25 08:55:37,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f7b3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:55:37, skipping insertion in model container [2019-11-25 08:55:37,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:37" (2/3) ... [2019-11-25 08:55:37,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f7b3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:55:37, skipping insertion in model container [2019-11-25 08:55:37,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:37" (3/3) ... [2019-11-25 08:55:37,832 INFO L109 eAbstractionObserver]: Analyzing ICFG TwoWay.c [2019-11-25 08:55:37,841 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:55:37,847 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-25 08:55:37,868 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-25 08:55:37,896 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:55:37,897 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:55:37,897 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:55:37,897 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:55:37,897 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:55:37,897 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:55:37,898 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:55:37,898 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:55:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-25 08:55:37,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:55:37,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:37,927 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:37,928 INFO L410 AbstractCegarLoop]: === Iteration 1 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:55:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:37,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939443, now seen corresponding path program 1 times [2019-11-25 08:55:37,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:37,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020976658] [2019-11-25 08:55:37,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:38,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020976658] [2019-11-25 08:55:38,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:38,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:55:38,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814455308] [2019-11-25 08:55:38,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:55:38,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:38,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:55:38,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:55:38,210 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2019-11-25 08:55:38,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:38,569 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2019-11-25 08:55:38,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:55:38,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-11-25 08:55:38,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:38,578 INFO L225 Difference]: With dead ends: 56 [2019-11-25 08:55:38,578 INFO L226 Difference]: Without dead ends: 51 [2019-11-25 08:55:38,581 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:55:38,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-25 08:55:38,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 37. [2019-11-25 08:55:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-25 08:55:38,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-11-25 08:55:38,622 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 8 [2019-11-25 08:55:38,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:38,622 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-25 08:55:38,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:55:38,623 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2019-11-25 08:55:38,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:55:38,623 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:38,623 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:38,624 INFO L410 AbstractCegarLoop]: === Iteration 2 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:55:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:38,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939635, now seen corresponding path program 1 times [2019-11-25 08:55:38,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:38,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031638569] [2019-11-25 08:55:38,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:38,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031638569] [2019-11-25 08:55:38,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:38,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:55:38,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483014975] [2019-11-25 08:55:38,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:55:38,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:38,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:55:38,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:55:38,655 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-11-25 08:55:38,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:38,681 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-11-25 08:55:38,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:55:38,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-25 08:55:38,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:38,683 INFO L225 Difference]: With dead ends: 45 [2019-11-25 08:55:38,683 INFO L226 Difference]: Without dead ends: 18 [2019-11-25 08:55:38,684 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:55:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-25 08:55:38,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-25 08:55:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:55:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-25 08:55:38,689 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2019-11-25 08:55:38,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:38,689 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-25 08:55:38,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:55:38,689 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-25 08:55:38,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:55:38,690 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:38,690 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:38,691 INFO L410 AbstractCegarLoop]: === Iteration 3 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:55:38,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:38,691 INFO L82 PathProgramCache]: Analyzing trace with hash -2051452074, now seen corresponding path program 1 times [2019-11-25 08:55:38,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:38,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791637184] [2019-11-25 08:55:38,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:38,770 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791637184] [2019-11-25 08:55:38,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:38,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-25 08:55:38,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093691364] [2019-11-25 08:55:38,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:55:38,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:38,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:55:38,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:55:38,772 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 7 states. [2019-11-25 08:55:38,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:38,889 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2019-11-25 08:55:38,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:55:38,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-25 08:55:38,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:38,891 INFO L225 Difference]: With dead ends: 35 [2019-11-25 08:55:38,891 INFO L226 Difference]: Without dead ends: 30 [2019-11-25 08:55:38,892 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:55:38,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-25 08:55:38,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2019-11-25 08:55:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-25 08:55:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-25 08:55:38,899 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 9 [2019-11-25 08:55:38,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:38,900 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-25 08:55:38,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:55:38,900 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-25 08:55:38,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:55:38,901 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:38,901 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:38,902 INFO L410 AbstractCegarLoop]: === Iteration 4 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:55:38,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:38,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2048642091, now seen corresponding path program 1 times [2019-11-25 08:55:38,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:38,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569108283] [2019-11-25 08:55:38,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:38,914 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:55:38,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535377649] [2019-11-25 08:55:38,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:38,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:55:38,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:39,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569108283] [2019-11-25 08:55:39,057 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-25 08:55:39,057 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535377649] [2019-11-25 08:55:39,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:55:39,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-25 08:55:39,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105765998] [2019-11-25 08:55:39,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:55:39,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:39,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:55:39,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:55:39,058 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 10 states. [2019-11-25 08:55:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:39,229 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2019-11-25 08:55:39,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:55:39,230 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-25 08:55:39,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:39,231 INFO L225 Difference]: With dead ends: 36 [2019-11-25 08:55:39,231 INFO L226 Difference]: Without dead ends: 35 [2019-11-25 08:55:39,231 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:55:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-25 08:55:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2019-11-25 08:55:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-25 08:55:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-11-25 08:55:39,248 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2019-11-25 08:55:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:39,249 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-11-25 08:55:39,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:55:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-11-25 08:55:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-25 08:55:39,250 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:39,250 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:39,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:39,457 INFO L410 AbstractCegarLoop]: === Iteration 5 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:55:39,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:39,457 INFO L82 PathProgramCache]: Analyzing trace with hash -916604565, now seen corresponding path program 1 times [2019-11-25 08:55:39,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:39,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681757459] [2019-11-25 08:55:39,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:39,467 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:55:39,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283247835] [2019-11-25 08:55:39,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:39,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:55:39,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:39,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681757459] [2019-11-25 08:55:39,615 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-25 08:55:39,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283247835] [2019-11-25 08:55:39,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:55:39,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-25 08:55:39,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851132746] [2019-11-25 08:55:39,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:55:39,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:39,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:55:39,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:55:39,617 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 10 states. [2019-11-25 08:55:39,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:39,847 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-11-25 08:55:39,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-25 08:55:39,848 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-25 08:55:39,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:39,849 INFO L225 Difference]: With dead ends: 37 [2019-11-25 08:55:39,849 INFO L226 Difference]: Without dead ends: 33 [2019-11-25 08:55:39,850 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:55:39,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-25 08:55:39,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-11-25 08:55:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:55:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-25 08:55:39,857 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 17 [2019-11-25 08:55:39,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:39,858 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-25 08:55:39,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:55:39,858 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-25 08:55:39,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-25 08:55:39,860 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:39,860 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:40,070 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:40,071 INFO L410 AbstractCegarLoop]: === Iteration 6 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:55:40,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:40,071 INFO L82 PathProgramCache]: Analyzing trace with hash 37921722, now seen corresponding path program 1 times [2019-11-25 08:55:40,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:40,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590980771] [2019-11-25 08:55:40,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:40,084 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:55:40,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068041045] [2019-11-25 08:55:40,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:40,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-25 08:55:40,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:55:40,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590980771] [2019-11-25 08:55:40,257 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-25 08:55:40,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068041045] [2019-11-25 08:55:40,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:55:40,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-11-25 08:55:40,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417565634] [2019-11-25 08:55:40,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-25 08:55:40,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:40,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:55:40,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:55:40,260 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 11 states. [2019-11-25 08:55:40,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:40,632 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-11-25 08:55:40,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:55:40,633 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2019-11-25 08:55:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:40,634 INFO L225 Difference]: With dead ends: 41 [2019-11-25 08:55:40,634 INFO L226 Difference]: Without dead ends: 40 [2019-11-25 08:55:40,635 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:55:40,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-25 08:55:40,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-11-25 08:55:40,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-25 08:55:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-11-25 08:55:40,642 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 27 [2019-11-25 08:55:40,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:40,642 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-11-25 08:55:40,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-25 08:55:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-11-25 08:55:40,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-25 08:55:40,643 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:40,643 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:40,852 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:40,852 INFO L410 AbstractCegarLoop]: === Iteration 7 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:55:40,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:40,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1175573436, now seen corresponding path program 1 times [2019-11-25 08:55:40,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:40,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994753073] [2019-11-25 08:55:40,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:40,868 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:55:40,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478832998] [2019-11-25 08:55:40,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:40,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-25 08:55:40,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:55:41,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994753073] [2019-11-25 08:55:41,106 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-25 08:55:41,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478832998] [2019-11-25 08:55:41,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:55:41,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2019-11-25 08:55:41,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760302381] [2019-11-25 08:55:41,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-25 08:55:41,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:41,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-25 08:55:41,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:55:41,108 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 16 states. [2019-11-25 08:55:41,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:41,452 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-25 08:55:41,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:55:41,456 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2019-11-25 08:55:41,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:41,457 INFO L225 Difference]: With dead ends: 40 [2019-11-25 08:55:41,457 INFO L226 Difference]: Without dead ends: 36 [2019-11-25 08:55:41,458 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2019-11-25 08:55:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-25 08:55:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-25 08:55:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-25 08:55:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2019-11-25 08:55:41,463 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 28 [2019-11-25 08:55:41,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:41,464 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2019-11-25 08:55:41,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-25 08:55:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2019-11-25 08:55:41,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-25 08:55:41,466 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:41,466 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:41,669 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:41,670 INFO L410 AbstractCegarLoop]: === Iteration 8 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:55:41,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:41,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1112227299, now seen corresponding path program 2 times [2019-11-25 08:55:41,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:41,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913724228] [2019-11-25 08:55:41,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:41,684 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:55:41,684 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825749362] [2019-11-25 08:55:41,684 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:41,733 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:55:41,733 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:55:41,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-25 08:55:41,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 18 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-25 08:55:42,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913724228] [2019-11-25 08:55:42,176 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-25 08:55:42,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825749362] [2019-11-25 08:55:42,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:55:42,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2019-11-25 08:55:42,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455347606] [2019-11-25 08:55:42,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-25 08:55:42,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:42,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-25 08:55:42,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2019-11-25 08:55:42,178 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 29 states. [2019-11-25 08:55:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:42,945 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2019-11-25 08:55:42,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-25 08:55:42,945 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 50 [2019-11-25 08:55:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:42,946 INFO L225 Difference]: With dead ends: 69 [2019-11-25 08:55:42,947 INFO L226 Difference]: Without dead ends: 68 [2019-11-25 08:55:42,948 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=387, Invalid=1683, Unknown=0, NotChecked=0, Total=2070 [2019-11-25 08:55:42,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-25 08:55:42,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2019-11-25 08:55:42,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-25 08:55:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2019-11-25 08:55:42,959 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 50 [2019-11-25 08:55:42,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:42,959 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2019-11-25 08:55:42,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-25 08:55:42,960 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2019-11-25 08:55:42,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-25 08:55:42,961 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:42,961 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:43,165 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:43,165 INFO L410 AbstractCegarLoop]: === Iteration 9 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:55:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:43,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1355949953, now seen corresponding path program 2 times [2019-11-25 08:55:43,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:43,165 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412695863] [2019-11-25 08:55:43,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:43,183 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:55:43,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909564577] [2019-11-25 08:55:43,184 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/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 [2019-11-25 08:55:43,225 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:55:43,225 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:55:43,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-25 08:55:43,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-25 08:55:43,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412695863] [2019-11-25 08:55:43,378 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-25 08:55:43,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909564577] [2019-11-25 08:55:43,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:55:43,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2019-11-25 08:55:43,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963601110] [2019-11-25 08:55:43,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-25 08:55:43,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:43,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-25 08:55:43,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:55:43,379 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 15 states. [2019-11-25 08:55:43,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:43,648 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2019-11-25 08:55:43,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:55:43,652 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2019-11-25 08:55:43,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:43,653 INFO L225 Difference]: With dead ends: 58 [2019-11-25 08:55:43,654 INFO L226 Difference]: Without dead ends: 54 [2019-11-25 08:55:43,654 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2019-11-25 08:55:43,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-25 08:55:43,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-25 08:55:43,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-25 08:55:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2019-11-25 08:55:43,663 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 39 [2019-11-25 08:55:43,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:43,664 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2019-11-25 08:55:43,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-25 08:55:43,664 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2019-11-25 08:55:43,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-25 08:55:43,667 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:43,667 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:43,870 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:43,870 INFO L410 AbstractCegarLoop]: === Iteration 10 === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:55:43,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:43,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1459996636, now seen corresponding path program 3 times [2019-11-25 08:55:43,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:43,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545838727] [2019-11-25 08:55:43,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:43,889 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:55:43,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32761792] [2019-11-25 08:55:43,889 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/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 [2019-11-25 08:55:45,458 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-25 08:55:45,458 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:55:45,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-25 08:55:45,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 36 proven. 24 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-11-25 08:55:45,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545838727] [2019-11-25 08:55:45,697 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-25 08:55:45,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32761792] [2019-11-25 08:55:45,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:55:45,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2019-11-25 08:55:45,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001981704] [2019-11-25 08:55:45,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:55:45,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:45,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:55:45,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:55:45,700 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 13 states. [2019-11-25 08:55:46,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:46,001 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2019-11-25 08:55:46,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:55:46,001 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2019-11-25 08:55:46,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:46,002 INFO L225 Difference]: With dead ends: 54 [2019-11-25 08:55:46,002 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:55:46,003 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2019-11-25 08:55:46,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:55:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:55:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:55:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:55:46,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2019-11-25 08:55:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:46,004 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:55:46,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:55:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:55:46,004 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:55:46,205 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:46,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:55:46,359 INFO L444 ceAbstractionStarter]: For program point L31(lines 31 35) no Hoare annotation was computed. [2019-11-25 08:55:46,360 INFO L440 ceAbstractionStarter]: At program point L31-2(lines 31 35) the Hoare annotation is: (let ((.cse0 (not (<= 1 |twoWay_#in~terminate|)))) (and (or (and (<= 0 twoWay_~n) (<= twoWay_~n |twoWay_#in~n|)) .cse0 (not (<= |twoWay_#in~n| 2147483646))) (or (not (<= |twoWay_#in~n| 2147483647)) (and (= |twoWay_#in~n| (+ twoWay_~m~0 1)) (<= |twoWay_#in~n| twoWay_~n) (<= 1 twoWay_~terminate) (<= twoWay_~n 2147483647)) .cse0))) [2019-11-25 08:55:46,360 INFO L444 ceAbstractionStarter]: For program point L27(lines 27 37) no Hoare annotation was computed. [2019-11-25 08:55:46,360 INFO L444 ceAbstractionStarter]: For program point twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-25 08:55:46,360 INFO L444 ceAbstractionStarter]: For program point twoWayFINAL(lines 26 38) no Hoare annotation was computed. [2019-11-25 08:55:46,360 INFO L444 ceAbstractionStarter]: For program point twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2019-11-25 08:55:46,360 INFO L444 ceAbstractionStarter]: For program point twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2019-11-25 08:55:46,360 INFO L444 ceAbstractionStarter]: For program point L36(line 36) no Hoare annotation was computed. [2019-11-25 08:55:46,360 INFO L444 ceAbstractionStarter]: For program point L36-1(line 36) no Hoare annotation was computed. [2019-11-25 08:55:46,360 INFO L444 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2019-11-25 08:55:46,361 INFO L444 ceAbstractionStarter]: For program point L36-2(line 36) no Hoare annotation was computed. [2019-11-25 08:55:46,361 INFO L444 ceAbstractionStarter]: For program point L34-1(line 34) no Hoare annotation was computed. [2019-11-25 08:55:46,361 INFO L444 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2019-11-25 08:55:46,361 INFO L444 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-11-25 08:55:46,361 INFO L447 ceAbstractionStarter]: At program point twoWayENTRY(lines 26 38) the Hoare annotation is: true [2019-11-25 08:55:46,361 INFO L444 ceAbstractionStarter]: For program point twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2019-11-25 08:55:46,361 INFO L444 ceAbstractionStarter]: For program point twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2019-11-25 08:55:46,361 INFO L444 ceAbstractionStarter]: For program point twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2019-11-25 08:55:46,361 INFO L444 ceAbstractionStarter]: For program point twoWayEXIT(lines 26 38) no Hoare annotation was computed. [2019-11-25 08:55:46,361 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:55:46,361 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:55:46,361 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:55:46,361 INFO L440 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-25 08:55:46,362 INFO L444 ceAbstractionStarter]: For program point L48-1(line 48) no Hoare annotation was computed. [2019-11-25 08:55:46,362 INFO L444 ceAbstractionStarter]: For program point L45(lines 45 46) no Hoare annotation was computed. [2019-11-25 08:55:46,362 INFO L444 ceAbstractionStarter]: For program point L42(lines 42 43) no Hoare annotation was computed. [2019-11-25 08:55:46,362 INFO L440 ceAbstractionStarter]: At program point L40(lines 40 50) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-11-25 08:55:46,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:55:46 BoogieIcfgContainer [2019-11-25 08:55:46,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:55:46,373 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:55:46,373 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:55:46,373 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:55:46,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:37" (3/4) ... [2019-11-25 08:55:46,376 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:55:46,381 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure twoWay [2019-11-25 08:55:46,385 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-25 08:55:46,386 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:55:46,426 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_599ec372-4f19-4847-9167-c4e38229fbc0/bin/uautomizer/witness.graphml [2019-11-25 08:55:46,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:55:46,428 INFO L168 Benchmark]: Toolchain (without parser) took 9286.83 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 269.0 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -239.4 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:46,429 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:46,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -209.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:46,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:46,430 INFO L168 Benchmark]: Boogie Preprocessor took 18.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:46,431 INFO L168 Benchmark]: RCFGBuilder took 375.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:46,432 INFO L168 Benchmark]: TraceAbstraction took 8547.25 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 103.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -54.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:46,432 INFO L168 Benchmark]: Witness Printer took 53.86 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:46,434 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 256.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -209.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 375.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8547.25 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 103.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -54.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 11.5 GB. * Witness Printer took 53.86 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 6 error locations. Result: SAFE, OverallTime: 8.4s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 124 SDtfs, 793 SDslu, 579 SDs, 0 SdLazy, 1326 SolverSat, 334 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 38 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 14 PreInvPairs, 18 NumberOfFragments, 52 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 269 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 259 ConstructedInterpolants, 9 QuantifiedInterpolants, 52216 SizeOfPredicates, 46 NumberOfNonLiveVariables, 669 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 194/322 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...