./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/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 c27ad91a5bec233234e07a14bfd5505e082df4cd ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:02:25,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:25,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:25,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:25,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:25,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:25,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:25,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:25,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:25,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:25,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:25,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:25,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:25,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:25,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:25,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:25,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:25,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:25,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:25,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:25,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:25,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:25,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:25,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:25,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:25,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:25,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:25,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:25,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:25,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:25,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:25,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:25,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:25,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:25,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:25,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:25,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:25,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:25,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:25,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:25,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:25,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 09:02:25,510 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:25,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:25,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:25,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:25,512 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:25,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:25,512 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:02:25,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:25,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:25,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:25,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:25,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:25,513 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 09:02:25,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:25,513 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:25,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:25,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:25,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:25,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:25,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:25,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:25,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:25,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:25,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:25,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:25,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:25,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:25,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/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 -> c27ad91a5bec233234e07a14bfd5505e082df4cd [2019-10-22 09:02:25,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:25,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:25,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:25,551 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:25,551 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:25,552 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2019-10-22 09:02:25,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/data/e023e0d85/9bf3595126f541b4805dcc587f6f2aa1/FLAGaaadff0f6 [2019-10-22 09:02:25,983 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:25,984 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2019-10-22 09:02:25,989 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/data/e023e0d85/9bf3595126f541b4805dcc587f6f2aa1/FLAGaaadff0f6 [2019-10-22 09:02:26,376 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/data/e023e0d85/9bf3595126f541b4805dcc587f6f2aa1 [2019-10-22 09:02:26,378 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:26,379 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:26,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:26,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:26,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:26,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:26" (1/1) ... [2019-10-22 09:02:26,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2e450f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26, skipping insertion in model container [2019-10-22 09:02:26,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:26" (1/1) ... [2019-10-22 09:02:26,394 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:26,407 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:26,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:26,534 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:26,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:26,613 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:26,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26 WrapperNode [2019-10-22 09:02:26,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:26,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:26,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:26,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:26,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26" (1/1) ... [2019-10-22 09:02:26,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26" (1/1) ... [2019-10-22 09:02:26,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:26,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:26,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:26,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:26,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26" (1/1) ... [2019-10-22 09:02:26,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26" (1/1) ... [2019-10-22 09:02:26,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26" (1/1) ... [2019-10-22 09:02:26,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26" (1/1) ... [2019-10-22 09:02:26,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26" (1/1) ... [2019-10-22 09:02:26,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26" (1/1) ... [2019-10-22 09:02:26,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26" (1/1) ... [2019-10-22 09:02:26,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:26,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:26,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:26,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:26,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-10-22 09:02:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-10-22 09:02:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-10-22 09:02:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-10-22 09:02:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:26,909 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:26,909 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 09:02:26,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:26 BoogieIcfgContainer [2019-10-22 09:02:26,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:26,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:26,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:26,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:26,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:26" (1/3) ... [2019-10-22 09:02:26,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237369cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:26, skipping insertion in model container [2019-10-22 09:02:26,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:26" (2/3) ... [2019-10-22 09:02:26,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237369cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:26, skipping insertion in model container [2019-10-22 09:02:26,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:26" (3/3) ... [2019-10-22 09:02:26,919 INFO L109 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2019-10-22 09:02:26,927 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:26,934 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-10-22 09:02:26,945 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-10-22 09:02:26,977 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:26,978 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:26,978 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:26,978 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:26,978 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:26,978 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:26,978 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:26,978 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-10-22 09:02:27,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 09:02:27,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:27,029 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 09:02:27,038 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:27,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:27,043 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2019-10-22 09:02:27,059 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:27,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863362754] [2019-10-22 09:02:27,059 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:27,059 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:27,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:27,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863362754] [2019-10-22 09:02:27,238 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:27,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:27,239 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594102396] [2019-10-22 09:02:27,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:27,243 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:27,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:27,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:27,258 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2019-10-22 09:02:27,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:27,368 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2019-10-22 09:02:27,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:27,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-10-22 09:02:27,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:27,380 INFO L225 Difference]: With dead ends: 64 [2019-10-22 09:02:27,380 INFO L226 Difference]: Without dead ends: 56 [2019-10-22 09:02:27,383 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-22 09:02:27,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2019-10-22 09:02:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 09:02:27,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2019-10-22 09:02:27,424 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2019-10-22 09:02:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:27,424 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2019-10-22 09:02:27,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2019-10-22 09:02:27,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 09:02:27,425 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:27,425 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:02:27,426 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:27,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:27,426 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2019-10-22 09:02:27,426 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:27,427 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295177912] [2019-10-22 09:02:27,427 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:27,427 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:27,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:27,442 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295177912] [2019-10-22 09:02:27,442 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:27,442 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:27,443 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627134277] [2019-10-22 09:02:27,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:27,444 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:27,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:27,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:27,445 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2019-10-22 09:02:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:27,469 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2019-10-22 09:02:27,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:27,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 09:02:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:27,471 INFO L225 Difference]: With dead ends: 52 [2019-10-22 09:02:27,471 INFO L226 Difference]: Without dead ends: 50 [2019-10-22 09:02:27,472 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-22 09:02:27,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2019-10-22 09:02:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-22 09:02:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2019-10-22 09:02:27,480 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2019-10-22 09:02:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:27,481 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2019-10-22 09:02:27,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2019-10-22 09:02:27,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 09:02:27,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:27,482 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:27,482 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:27,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:27,482 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2019-10-22 09:02:27,482 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:27,483 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536234414] [2019-10-22 09:02:27,483 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:27,483 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:27,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:27,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536234414] [2019-10-22 09:02:27,559 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:27,559 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:02:27,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270388317] [2019-10-22 09:02:27,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 09:02:27,560 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:27,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 09:02:27,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:02:27,560 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2019-10-22 09:02:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:27,736 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2019-10-22 09:02:27,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:02:27,737 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-10-22 09:02:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:27,737 INFO L225 Difference]: With dead ends: 66 [2019-10-22 09:02:27,738 INFO L226 Difference]: Without dead ends: 63 [2019-10-22 09:02:27,738 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-22 09:02:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-22 09:02:27,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2019-10-22 09:02:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-10-22 09:02:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2019-10-22 09:02:27,747 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2019-10-22 09:02:27,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:27,748 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2019-10-22 09:02:27,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 09:02:27,748 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2019-10-22 09:02:27,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:02:27,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:27,749 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:27,749 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:27,750 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2019-10-22 09:02:27,750 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:27,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146026401] [2019-10-22 09:02:27,750 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:27,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:27,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:02:27,780 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146026401] [2019-10-22 09:02:27,780 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:27,781 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:27,781 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208175031] [2019-10-22 09:02:27,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:27,781 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:27,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:27,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:27,782 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2019-10-22 09:02:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:27,793 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2019-10-22 09:02:27,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:27,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 09:02:27,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:27,795 INFO L225 Difference]: With dead ends: 61 [2019-10-22 09:02:27,795 INFO L226 Difference]: Without dead ends: 60 [2019-10-22 09:02:27,795 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:27,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-22 09:02:27,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2019-10-22 09:02:27,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-22 09:02:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2019-10-22 09:02:27,804 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2019-10-22 09:02:27,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:27,804 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2019-10-22 09:02:27,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2019-10-22 09:02:27,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 09:02:27,805 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:27,806 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:27,806 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:27,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:27,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2019-10-22 09:02:27,807 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:27,807 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588370170] [2019-10-22 09:02:27,807 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:27,807 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:27,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 09:02:27,858 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588370170] [2019-10-22 09:02:27,858 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:27,859 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:02:27,859 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065586948] [2019-10-22 09:02:27,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:27,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:27,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:27,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:27,860 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2019-10-22 09:02:27,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:27,930 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2019-10-22 09:02:27,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:27,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-10-22 09:02:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:27,933 INFO L225 Difference]: With dead ends: 93 [2019-10-22 09:02:27,933 INFO L226 Difference]: Without dead ends: 92 [2019-10-22 09:02:27,933 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:27,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-10-22 09:02:27,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2019-10-22 09:02:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 09:02:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2019-10-22 09:02:27,954 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2019-10-22 09:02:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:27,954 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2019-10-22 09:02:27,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2019-10-22 09:02:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 09:02:27,955 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:27,955 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:27,956 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:27,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:27,956 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2019-10-22 09:02:27,956 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:27,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055249928] [2019-10-22 09:02:27,957 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:27,957 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:27,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 09:02:28,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055249928] [2019-10-22 09:02:28,042 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:28,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:02:28,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273209478] [2019-10-22 09:02:28,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:28,042 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:28,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:28,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:28,043 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2019-10-22 09:02:28,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:28,087 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2019-10-22 09:02:28,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:28,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-22 09:02:28,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:28,089 INFO L225 Difference]: With dead ends: 93 [2019-10-22 09:02:28,089 INFO L226 Difference]: Without dead ends: 89 [2019-10-22 09:02:28,090 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-10-22 09:02:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2019-10-22 09:02:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 09:02:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2019-10-22 09:02:28,100 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2019-10-22 09:02:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:28,100 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2019-10-22 09:02:28,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2019-10-22 09:02:28,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 09:02:28,101 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:28,101 INFO L380 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:28,102 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:28,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:28,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1064471087, now seen corresponding path program 1 times [2019-10-22 09:02:28,102 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:28,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944895701] [2019-10-22 09:02:28,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:28,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:28,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-22 09:02:28,214 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944895701] [2019-10-22 09:02:28,214 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197052843] [2019-10-22 09:02:28,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:28,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-22 09:02:28,295 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:02:28,295 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-10-22 09:02:28,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096844863] [2019-10-22 09:02:28,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:28,296 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:28,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:28,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:02:28,296 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 5 states. [2019-10-22 09:02:28,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:28,352 INFO L93 Difference]: Finished difference Result 149 states and 199 transitions. [2019-10-22 09:02:28,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:02:28,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-10-22 09:02:28,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:28,353 INFO L225 Difference]: With dead ends: 149 [2019-10-22 09:02:28,354 INFO L226 Difference]: Without dead ends: 78 [2019-10-22 09:02:28,355 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:02:28,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-22 09:02:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2019-10-22 09:02:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 09:02:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2019-10-22 09:02:28,366 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 32 [2019-10-22 09:02:28,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:28,366 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2019-10-22 09:02:28,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:28,366 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2019-10-22 09:02:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-22 09:02:28,369 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:28,369 INFO L380 BasicCegarLoop]: trace histogram [11, 8, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-10-22 09:02:28,570 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:28,570 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:28,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:28,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1439026731, now seen corresponding path program 1 times [2019-10-22 09:02:28,571 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:28,571 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890894694] [2019-10-22 09:02:28,571 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:28,571 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:28,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 115 proven. 89 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-22 09:02:28,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890894694] [2019-10-22 09:02:28,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191178266] [2019-10-22 09:02:28,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:29,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:02:29,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 124 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2019-10-22 09:02:29,070 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:29,070 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7] total 20 [2019-10-22 09:02:29,070 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335369377] [2019-10-22 09:02:29,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-22 09:02:29,071 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:29,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-22 09:02:29,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2019-10-22 09:02:29,071 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 20 states. [2019-10-22 09:02:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:29,475 INFO L93 Difference]: Finished difference Result 153 states and 193 transitions. [2019-10-22 09:02:29,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 09:02:29,476 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 118 [2019-10-22 09:02:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:29,477 INFO L225 Difference]: With dead ends: 153 [2019-10-22 09:02:29,477 INFO L226 Difference]: Without dead ends: 82 [2019-10-22 09:02:29,478 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2019-10-22 09:02:29,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-10-22 09:02:29,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2019-10-22 09:02:29,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 09:02:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2019-10-22 09:02:29,493 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 118 [2019-10-22 09:02:29,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:29,494 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2019-10-22 09:02:29,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-22 09:02:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2019-10-22 09:02:29,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-22 09:02:29,495 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:29,496 INFO L380 BasicCegarLoop]: trace histogram [8, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-10-22 09:02:29,700 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:29,700 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:29,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:29,701 INFO L82 PathProgramCache]: Analyzing trace with hash 627143089, now seen corresponding path program 2 times [2019-10-22 09:02:29,701 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:29,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031243639] [2019-10-22 09:02:29,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:29,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:29,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 61 proven. 16 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-10-22 09:02:29,889 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031243639] [2019-10-22 09:02:29,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453027300] [2019-10-22 09:02:29,890 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:29,934 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:02:29,935 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:02:29,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 09:02:29,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 35 proven. 13 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-10-22 09:02:30,043 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:30,043 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 20 [2019-10-22 09:02:30,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18932578] [2019-10-22 09:02:30,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-22 09:02:30,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:30,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-22 09:02:30,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2019-10-22 09:02:30,045 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 21 states. [2019-10-22 09:02:30,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:30,586 INFO L93 Difference]: Finished difference Result 122 states and 147 transitions. [2019-10-22 09:02:30,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-22 09:02:30,588 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 94 [2019-10-22 09:02:30,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:30,589 INFO L225 Difference]: With dead ends: 122 [2019-10-22 09:02:30,589 INFO L226 Difference]: Without dead ends: 120 [2019-10-22 09:02:30,590 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2019-10-22 09:02:30,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-10-22 09:02:30,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 99. [2019-10-22 09:02:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-10-22 09:02:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2019-10-22 09:02:30,607 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 94 [2019-10-22 09:02:30,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:30,609 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2019-10-22 09:02:30,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-22 09:02:30,610 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2019-10-22 09:02:30,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-22 09:02:30,610 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:30,610 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:30,811 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:30,811 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:30,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:30,811 INFO L82 PathProgramCache]: Analyzing trace with hash -257147105, now seen corresponding path program 1 times [2019-10-22 09:02:30,812 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:30,812 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721000759] [2019-10-22 09:02:30,812 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:30,812 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:30,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-22 09:02:30,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721000759] [2019-10-22 09:02:30,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465517042] [2019-10-22 09:02:30,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:31,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:02:31,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-22 09:02:31,116 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:31,116 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 19 [2019-10-22 09:02:31,116 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460631420] [2019-10-22 09:02:31,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-22 09:02:31,117 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:31,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-22 09:02:31,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2019-10-22 09:02:31,117 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand 19 states. [2019-10-22 09:02:31,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:31,369 INFO L93 Difference]: Finished difference Result 140 states and 166 transitions. [2019-10-22 09:02:31,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 09:02:31,370 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 61 [2019-10-22 09:02:31,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:31,370 INFO L225 Difference]: With dead ends: 140 [2019-10-22 09:02:31,370 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:02:31,371 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2019-10-22 09:02:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:02:31,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:02:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:02:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:02:31,372 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2019-10-22 09:02:31,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:31,372 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:31,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-22 09:02:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:02:31,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:02:31,573 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:31,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 09:02:31,759 INFO L443 ceAbstractionStarter]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-10-22 09:02:31,760 INFO L443 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-10-22 09:02:31,760 INFO L443 ceAbstractionStarter]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2019-10-22 09:02:31,760 INFO L443 ceAbstractionStarter]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-10-22 09:02:31,760 INFO L439 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (or (and (<= 1 f_~x) (= |f_#in~x| f_~x)) (not (<= |f_#in~x| 2147483646))) [2019-10-22 09:02:31,760 INFO L443 ceAbstractionStarter]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-10-22 09:02:31,760 INFO L443 ceAbstractionStarter]: For program point L13(lines 13 14) no Hoare annotation was computed. [2019-10-22 09:02:31,760 INFO L443 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-10-22 09:02:31,760 INFO L443 ceAbstractionStarter]: For program point L14-2(line 14) no Hoare annotation was computed. [2019-10-22 09:02:31,760 INFO L443 ceAbstractionStarter]: For program point L14-3(line 14) no Hoare annotation was computed. [2019-10-22 09:02:31,760 INFO L439 ceAbstractionStarter]: At program point L14-4(line 14) the Hoare annotation is: (or (and (<= 1 (+ f_~x |f_#t~ret0|)) (<= |f_#t~ret0| 0) (= |f_#in~x| f_~x)) (not (<= |f_#in~x| 2147483646))) [2019-10-22 09:02:31,761 INFO L443 ceAbstractionStarter]: For program point L14-5(line 14) no Hoare annotation was computed. [2019-10-22 09:02:31,761 INFO L443 ceAbstractionStarter]: For program point L14-6(line 14) no Hoare annotation was computed. [2019-10-22 09:02:31,761 INFO L443 ceAbstractionStarter]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2019-10-22 09:02:31,761 INFO L443 ceAbstractionStarter]: For program point L14-7(line 14) no Hoare annotation was computed. [2019-10-22 09:02:31,761 INFO L446 ceAbstractionStarter]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2019-10-22 09:02:31,761 INFO L443 ceAbstractionStarter]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,761 INFO L443 ceAbstractionStarter]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2019-10-22 09:02:31,761 INFO L443 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,761 INFO L443 ceAbstractionStarter]: For program point L19(lines 19 20) no Hoare annotation was computed. [2019-10-22 09:02:31,761 INFO L443 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,762 INFO L439 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (and (or (= |g_#in~x| g_~x) (not (<= |g_#in~x| 2147483647))) (or (<= 1 g_~x) (not (<= |g_#in~x| 2147483646)))) [2019-10-22 09:02:31,762 INFO L443 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,762 INFO L443 ceAbstractionStarter]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,762 INFO L443 ceAbstractionStarter]: For program point L20-4(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,762 INFO L443 ceAbstractionStarter]: For program point L20-5(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,762 INFO L443 ceAbstractionStarter]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,762 INFO L443 ceAbstractionStarter]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,762 INFO L443 ceAbstractionStarter]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,763 INFO L439 ceAbstractionStarter]: At program point L20-6(line 20) the Hoare annotation is: (or (not (<= |g_#in~x| 2147483647)) (and (<= 0 |g_#t~ret2|) (<= 1 g_~x) (<= |g_#t~ret2| 0) (= |g_#in~x| g_~x) (<= |g_#in~x| 1))) [2019-10-22 09:02:31,763 INFO L443 ceAbstractionStarter]: For program point L20-7(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,763 INFO L443 ceAbstractionStarter]: For program point L20-8(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,763 INFO L443 ceAbstractionStarter]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,763 INFO L443 ceAbstractionStarter]: For program point L20-9(line 20) no Hoare annotation was computed. [2019-10-22 09:02:31,763 INFO L443 ceAbstractionStarter]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2019-10-22 09:02:31,763 INFO L446 ceAbstractionStarter]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2019-10-22 09:02:31,763 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 09:02:31,763 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 09:02:31,763 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 09:02:31,764 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-10-22 09:02:31,764 INFO L443 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2019-10-22 09:02:31,764 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 27) no Hoare annotation was computed. [2019-10-22 09:02:31,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:31 BoogieIcfgContainer [2019-10-22 09:02:31,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:31,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:31,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:31,767 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:31,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:26" (3/4) ... [2019-10-22 09:02:31,770 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:02:31,775 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2019-10-22 09:02:31,775 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2019-10-22 09:02:31,779 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 09:02:31,779 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 09:02:31,814 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f812f003-4aed-497a-ae24-adaaedbd1f56/bin/uautomizer/witness.graphml [2019-10-22 09:02:31,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:31,816 INFO L168 Benchmark]: Toolchain (without parser) took 5436.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 181.4 MB). Free memory was 944.5 MB in the beginning and 1.0 GB in the end (delta: -93.9 MB). Peak memory consumption was 87.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:31,816 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:31,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -192.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:31,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:31,817 INFO L168 Benchmark]: Boogie Preprocessor took 19.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:31,817 INFO L168 Benchmark]: RCFGBuilder took 246.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:31,818 INFO L168 Benchmark]: TraceAbstraction took 4854.99 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 40.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 70.4 MB). Peak memory consumption was 111.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:31,818 INFO L168 Benchmark]: Witness Printer took 47.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:31,820 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 233.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -192.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 246.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4854.99 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 40.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 70.4 MB). Peak memory consumption was 111.3 MB. Max. memory is 11.5 GB. * Witness Printer took 47.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 10 error locations. Result: SAFE, OverallTime: 4.7s, OverallIterations: 10, TraceHistogramMax: 11, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 279 SDtfs, 347 SDslu, 995 SDs, 0 SdLazy, 1327 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 494 GetRequests, 371 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=9, 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, 10 MinimizatonAttempts, 64 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 115 PreInvPairs, 121 NumberOfFragments, 72 HoareAnnotationTreeSize, 115 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 186 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 694 NumberOfCodeBlocks, 694 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 680 ConstructedInterpolants, 0 QuantifiedInterpolants, 119209 SizeOfPredicates, 8 NumberOfNonLiveVariables, 613 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 967/1107 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...