./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/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 500cb8735f650eb0e7c33062ddc23c2166b17f19 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 08:36:52,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 08:36:52,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 08:36:52,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 08:36:52,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 08:36:52,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 08:36:52,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 08:36:52,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 08:36:52,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 08:36:52,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 08:36:52,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 08:36:52,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 08:36:52,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 08:36:52,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 08:36:52,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 08:36:52,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 08:36:52,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 08:36:52,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 08:36:52,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 08:36:52,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 08:36:52,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 08:36:52,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 08:36:52,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 08:36:52,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 08:36:52,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 08:36:52,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 08:36:52,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 08:36:52,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 08:36:52,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 08:36:52,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 08:36:52,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 08:36:52,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 08:36:52,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 08:36:52,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 08:36:52,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 08:36:52,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 08:36:52,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 08:36:52,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 08:36:52,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 08:36:52,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 08:36:52,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 08:36:52,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-20 08:36:52,334 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 08:36:52,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 08:36:52,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 08:36:52,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 08:36:52,335 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 08:36:52,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 08:36:52,336 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 08:36:52,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 08:36:52,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 08:36:52,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 08:36:52,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 08:36:52,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 08:36:52,337 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-20 08:36:52,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 08:36:52,338 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 08:36:52,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 08:36:52,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 08:36:52,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 08:36:52,338 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 08:36:52,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 08:36:52,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 08:36:52,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 08:36:52,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 08:36:52,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 08:36:52,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 08:36:52,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 08:36:52,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 08:36:52,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/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 -> 500cb8735f650eb0e7c33062ddc23c2166b17f19 [2019-11-20 08:36:52,483 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 08:36:52,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 08:36:52,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 08:36:52,497 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 08:36:52,498 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 08:36:52,498 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2019-11-20 08:36:52,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/data/f1f982022/7c06d8a77af9418b921643522c7edbe8/FLAGa7fa23e7b [2019-11-20 08:36:52,944 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 08:36:52,944 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2019-11-20 08:36:52,950 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/data/f1f982022/7c06d8a77af9418b921643522c7edbe8/FLAGa7fa23e7b [2019-11-20 08:36:52,966 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/data/f1f982022/7c06d8a77af9418b921643522c7edbe8 [2019-11-20 08:36:52,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 08:36:52,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 08:36:52,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 08:36:52,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 08:36:52,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 08:36:52,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:36:52" (1/1) ... [2019-11-20 08:36:52,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b3a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:52, skipping insertion in model container [2019-11-20 08:36:52,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:36:52" (1/1) ... [2019-11-20 08:36:52,985 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 08:36:53,004 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 08:36:53,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:36:53,147 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 08:36:53,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:36:53,240 INFO L192 MainTranslator]: Completed translation [2019-11-20 08:36:53,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:53 WrapperNode [2019-11-20 08:36:53,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 08:36:53,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 08:36:53,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 08:36:53,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 08:36:53,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:53" (1/1) ... [2019-11-20 08:36:53,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:53" (1/1) ... [2019-11-20 08:36:53,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 08:36:53,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 08:36:53,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 08:36:53,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 08:36:53,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:53" (1/1) ... [2019-11-20 08:36:53,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:53" (1/1) ... [2019-11-20 08:36:53,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:53" (1/1) ... [2019-11-20 08:36:53,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:53" (1/1) ... [2019-11-20 08:36:53,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:53" (1/1) ... [2019-11-20 08:36:53,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:53" (1/1) ... [2019-11-20 08:36:53,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:53" (1/1) ... [2019-11-20 08:36:53,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 08:36:53,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 08:36:53,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 08:36:53,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 08:36:53,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 08:36:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 08:36:53,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 08:36:53,573 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 08:36:53,573 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 08:36:53,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:36:53 BoogieIcfgContainer [2019-11-20 08:36:53,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 08:36:53,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 08:36:53,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 08:36:53,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 08:36:53,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:36:52" (1/3) ... [2019-11-20 08:36:53,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b50511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:36:53, skipping insertion in model container [2019-11-20 08:36:53,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:36:53" (2/3) ... [2019-11-20 08:36:53,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b50511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:36:53, skipping insertion in model container [2019-11-20 08:36:53,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:36:53" (3/3) ... [2019-11-20 08:36:53,581 INFO L109 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2019-11-20 08:36:53,606 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 08:36:53,611 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-20 08:36:53,628 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-20 08:36:53,653 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 08:36:53,654 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 08:36:53,654 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 08:36:53,654 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 08:36:53,654 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 08:36:53,654 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 08:36:53,655 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 08:36:53,655 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 08:36:53,669 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-20 08:36:53,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 08:36:53,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:36:53,675 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 08:36:53,676 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 08:36:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:36:53,681 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2019-11-20 08:36:53,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:36:53,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648248256] [2019-11-20 08:36:53,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:36:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:36:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:36:53,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648248256] [2019-11-20 08:36:53,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:36:53,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 08:36:53,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199775810] [2019-11-20 08:36:53,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 08:36:53,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:36:53,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 08:36:53,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 08:36:53,837 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2019-11-20 08:36:53,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:36:53,892 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-11-20 08:36:53,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 08:36:53,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-20 08:36:53,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:36:53,901 INFO L225 Difference]: With dead ends: 29 [2019-11-20 08:36:53,902 INFO L226 Difference]: Without dead ends: 16 [2019-11-20 08:36:53,904 INFO L630 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 [2019-11-20 08:36:53,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-20 08:36:53,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-20 08:36:53,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 08:36:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-20 08:36:53,936 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2019-11-20 08:36:53,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:36:53,936 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-20 08:36:53,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 08:36:53,936 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-20 08:36:53,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 08:36:53,937 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:36:53,937 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 08:36:53,937 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 08:36:53,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:36:53,938 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2019-11-20 08:36:53,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:36:53,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641317887] [2019-11-20 08:36:53,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:36:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:36:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:36:53,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641317887] [2019-11-20 08:36:53,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:36:53,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 08:36:53,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153732394] [2019-11-20 08:36:53,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 08:36:53,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:36:53,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 08:36:53,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 08:36:53,964 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2019-11-20 08:36:53,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:36:53,999 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-11-20 08:36:53,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 08:36:54,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-20 08:36:54,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:36:54,000 INFO L225 Difference]: With dead ends: 30 [2019-11-20 08:36:54,000 INFO L226 Difference]: Without dead ends: 17 [2019-11-20 08:36:54,001 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 08:36:54,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-20 08:36:54,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-20 08:36:54,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-20 08:36:54,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-20 08:36:54,005 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 5 [2019-11-20 08:36:54,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:36:54,005 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-20 08:36:54,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 08:36:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-20 08:36:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 08:36:54,006 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:36:54,006 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 08:36:54,006 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 08:36:54,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:36:54,007 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2019-11-20 08:36:54,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:36:54,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539655965] [2019-11-20 08:36:54,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:36:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:36:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:36:54,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539655965] [2019-11-20 08:36:54,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:36:54,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 08:36:54,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85269344] [2019-11-20 08:36:54,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 08:36:54,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:36:54,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 08:36:54,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 08:36:54,036 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2019-11-20 08:36:54,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:36:54,050 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2019-11-20 08:36:54,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 08:36:54,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-20 08:36:54,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:36:54,051 INFO L225 Difference]: With dead ends: 17 [2019-11-20 08:36:54,051 INFO L226 Difference]: Without dead ends: 16 [2019-11-20 08:36:54,052 INFO L630 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 [2019-11-20 08:36:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-20 08:36:54,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-20 08:36:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-20 08:36:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-20 08:36:54,055 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2019-11-20 08:36:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:36:54,056 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-20 08:36:54,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 08:36:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-20 08:36:54,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 08:36:54,057 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:36:54,057 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-20 08:36:54,057 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 08:36:54,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:36:54,057 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2019-11-20 08:36:54,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:36:54,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860039774] [2019-11-20 08:36:54,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:36:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:36:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:36:54,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860039774] [2019-11-20 08:36:54,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999113089] [2019-11-20 08:36:54,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:36:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:36:54,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 08:36:54,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:36:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:36:54,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 08:36:54,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-20 08:36:54,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710778151] [2019-11-20 08:36:54,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 08:36:54,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:36:54,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 08:36:54,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 08:36:54,170 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2019-11-20 08:36:54,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:36:54,205 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-20 08:36:54,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 08:36:54,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-20 08:36:54,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:36:54,207 INFO L225 Difference]: With dead ends: 22 [2019-11-20 08:36:54,207 INFO L226 Difference]: Without dead ends: 21 [2019-11-20 08:36:54,207 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 08:36:54,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-20 08:36:54,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-20 08:36:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-20 08:36:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-20 08:36:54,212 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2019-11-20 08:36:54,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:36:54,212 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-20 08:36:54,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 08:36:54,212 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-20 08:36:54,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 08:36:54,213 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:36:54,213 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:36:54,420 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:36:54,420 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 08:36:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:36:54,421 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2019-11-20 08:36:54,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:36:54,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66418569] [2019-11-20 08:36:54,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:36:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:36:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 08:36:54,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66418569] [2019-11-20 08:36:54,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:36:54,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 08:36:54,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492589207] [2019-11-20 08:36:54,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 08:36:54,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:36:54,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 08:36:54,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 08:36:54,461 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2019-11-20 08:36:54,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:36:54,487 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-11-20 08:36:54,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 08:36:54,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-20 08:36:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:36:54,489 INFO L225 Difference]: With dead ends: 33 [2019-11-20 08:36:54,489 INFO L226 Difference]: Without dead ends: 32 [2019-11-20 08:36:54,490 INFO L630 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 [2019-11-20 08:36:54,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-20 08:36:54,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-11-20 08:36:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 08:36:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-11-20 08:36:54,495 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 9 [2019-11-20 08:36:54,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:36:54,495 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-11-20 08:36:54,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 08:36:54,496 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-11-20 08:36:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 08:36:54,496 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:36:54,496 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:36:54,497 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 08:36:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:36:54,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1897256205, now seen corresponding path program 1 times [2019-11-20 08:36:54,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:36:54,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819108536] [2019-11-20 08:36:54,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:36:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:36:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 08:36:54,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819108536] [2019-11-20 08:36:54,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:36:54,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 08:36:54,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691907457] [2019-11-20 08:36:54,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 08:36:54,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:36:54,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 08:36:54,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 08:36:54,536 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2019-11-20 08:36:54,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:36:54,547 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-11-20 08:36:54,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 08:36:54,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-20 08:36:54,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:36:54,548 INFO L225 Difference]: With dead ends: 30 [2019-11-20 08:36:54,549 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 08:36:54,549 INFO L630 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 [2019-11-20 08:36:54,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 08:36:54,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-20 08:36:54,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 08:36:54,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2019-11-20 08:36:54,554 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 10 [2019-11-20 08:36:54,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:36:54,554 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-11-20 08:36:54,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 08:36:54,555 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2019-11-20 08:36:54,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 08:36:54,555 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:36:54,555 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2019-11-20 08:36:54,556 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 08:36:54,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:36:54,556 INFO L82 PathProgramCache]: Analyzing trace with hash 432560224, now seen corresponding path program 2 times [2019-11-20 08:36:54,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:36:54,556 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168117203] [2019-11-20 08:36:54,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:36:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:36:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:36:54,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168117203] [2019-11-20 08:36:54,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282614463] [2019-11-20 08:36:54,639 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-20 08:36:54,681 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 08:36:54,681 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:36:54,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 08:36:54,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:36:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-20 08:36:54,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 08:36:54,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2019-11-20 08:36:54,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337666368] [2019-11-20 08:36:54,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 08:36:54,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:36:54,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 08:36:54,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-20 08:36:54,740 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 10 states. [2019-11-20 08:36:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:36:54,982 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2019-11-20 08:36:54,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 08:36:54,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2019-11-20 08:36:54,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:36:54,987 INFO L225 Difference]: With dead ends: 43 [2019-11-20 08:36:54,987 INFO L226 Difference]: Without dead ends: 42 [2019-11-20 08:36:54,989 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2019-11-20 08:36:54,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-20 08:36:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 16. [2019-11-20 08:36:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-20 08:36:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-20 08:36:54,994 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2019-11-20 08:36:54,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:36:54,995 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-20 08:36:54,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 08:36:54,995 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-20 08:36:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 08:36:54,995 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:36:54,995 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 08:36:55,201 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:36:55,202 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 08:36:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:36:55,202 INFO L82 PathProgramCache]: Analyzing trace with hash 610055194, now seen corresponding path program 1 times [2019-11-20 08:36:55,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:36:55,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716993682] [2019-11-20 08:36:55,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:36:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:36:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 08:36:55,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716993682] [2019-11-20 08:36:55,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887913530] [2019-11-20 08:36:55,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:36:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:36:55,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 08:36:55,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:36:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 08:36:55,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 08:36:55,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2019-11-20 08:36:55,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755789927] [2019-11-20 08:36:55,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 08:36:55,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:36:55,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 08:36:55,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-20 08:36:55,281 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2019-11-20 08:36:55,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:36:55,396 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-11-20 08:36:55,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 08:36:55,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-20 08:36:55,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:36:55,397 INFO L225 Difference]: With dead ends: 34 [2019-11-20 08:36:55,397 INFO L226 Difference]: Without dead ends: 27 [2019-11-20 08:36:55,398 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-11-20 08:36:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-20 08:36:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-11-20 08:36:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 08:36:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-20 08:36:55,403 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2019-11-20 08:36:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:36:55,403 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-20 08:36:55,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 08:36:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-20 08:36:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 08:36:55,410 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:36:55,410 INFO L410 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2019-11-20 08:36:55,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:36:55,612 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 08:36:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:36:55,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1201123269, now seen corresponding path program 2 times [2019-11-20 08:36:55,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:36:55,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851911116] [2019-11-20 08:36:55,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:36:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:36:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-20 08:36:55,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851911116] [2019-11-20 08:36:55,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997337503] [2019-11-20 08:36:55,692 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:36:55,724 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 08:36:55,724 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 08:36:55,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 08:36:55,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:36:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-20 08:36:55,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 08:36:55,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2] total 6 [2019-11-20 08:36:55,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2721471] [2019-11-20 08:36:55,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 08:36:55,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 08:36:55,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 08:36:55,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 08:36:55,750 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2019-11-20 08:36:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:36:55,812 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2019-11-20 08:36:55,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 08:36:55,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-20 08:36:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:36:55,813 INFO L225 Difference]: With dead ends: 36 [2019-11-20 08:36:55,813 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 08:36:55,814 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-20 08:36:55,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 08:36:55,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 08:36:55,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 08:36:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 08:36:55,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-11-20 08:36:55,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:36:55,815 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 08:36:55,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 08:36:55,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 08:36:55,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 08:36:56,016 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 08:36:56,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 08:36:56,146 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-20 08:36:56,147 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 08:36:56,147 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2019-11-20 08:36:56,147 INFO L447 ceAbstractionStarter]: At program point L29(lines 13 30) the Hoare annotation is: true [2019-11-20 08:36:56,147 INFO L444 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-11-20 08:36:56,147 INFO L444 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-11-20 08:36:56,148 INFO L444 ceAbstractionStarter]: For program point L21(lines 21 26) no Hoare annotation was computed. [2019-11-20 08:36:56,148 INFO L440 ceAbstractionStarter]: At program point L21-2(lines 20 27) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~m~0 2147483646)) (.cse1 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse2 (<= 0 ULTIMATE.start_main_~j~0)) (.cse3 (<= 0 ULTIMATE.start_main_~i~0))) (or (and .cse0 .cse1 (<= 1 ULTIMATE.start_main_~m~0) .cse2 (<= ULTIMATE.start_main_~i~0 2147483646) .cse3) (and .cse0 .cse1 (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~m~0) .cse2 .cse3))) [2019-11-20 08:36:56,148 INFO L444 ceAbstractionStarter]: For program point L17(lines 17 28) no Hoare annotation was computed. [2019-11-20 08:36:56,148 INFO L444 ceAbstractionStarter]: For program point L17-1(lines 17 28) no Hoare annotation was computed. [2019-11-20 08:36:56,148 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-20 08:36:56,148 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2019-11-20 08:36:56,148 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 08:36:56,149 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 08:36:56,149 INFO L444 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-20 08:36:56,149 INFO L444 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-20 08:36:56,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:36:56 BoogieIcfgContainer [2019-11-20 08:36:56,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 08:36:56,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 08:36:56,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 08:36:56,163 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 08:36:56,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:36:53" (3/4) ... [2019-11-20 08:36:56,166 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 08:36:56,175 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 08:36:56,175 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 08:36:56,218 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7920ef3c-e43f-4bd4-bdcf-1b95972b793c/bin/uautomizer/witness.graphml [2019-11-20 08:36:56,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 08:36:56,220 INFO L168 Benchmark]: Toolchain (without parser) took 3249.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 946.1 MB in the beginning and 940.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 136.2 MB. Max. memory is 11.5 GB. [2019-11-20 08:36:56,221 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:36:56,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-20 08:36:56,222 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:36:56,222 INFO L168 Benchmark]: Boogie Preprocessor took 15.10 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. [2019-11-20 08:36:56,223 INFO L168 Benchmark]: RCFGBuilder took 281.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 08:36:56,223 INFO L168 Benchmark]: TraceAbstraction took 2586.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.4 MB in the end (delta: 166.6 MB). Peak memory consumption was 166.6 MB. Max. memory is 11.5 GB. [2019-11-20 08:36:56,224 INFO L168 Benchmark]: Witness Printer took 55.73 ms. Allocated memory is still 1.2 GB. Free memory is still 940.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:36:56,226 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 269.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.10 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 281.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2586.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.4 MB in the end (delta: 166.6 MB). Peak memory consumption was 166.6 MB. Max. memory is 11.5 GB. * Witness Printer took 55.73 ms. Allocated memory is still 1.2 GB. Free memory is still 940.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((m <= 2147483646 && n <= 2147483647) && 1 <= m) && 0 <= j) && i <= 2147483646) && 0 <= i) || ((((m <= 2147483646 && n <= 2147483647) && j + 1 <= m) && 0 <= j) && 0 <= i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 66 SDtfs, 141 SDslu, 30 SDs, 0 SdLazy, 125 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 13 NumberOfFragments, 39 HoareAnnotationTreeSize, 2 FomulaSimplifications, 810 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 155 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 6306 SizeOfPredicates, 3 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 56/124 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...