./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/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-cad4683 [2019-11-15 20:36:49,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:36:49,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:36:49,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:36:49,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:36:49,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:36:49,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:36:49,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:36:49,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:36:49,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:36:49,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:36:49,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:36:49,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:36:49,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:36:49,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:36:49,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:36:49,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:36:49,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:36:49,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:36:49,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:36:49,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:36:49,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:36:49,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:36:49,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:36:49,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:36:49,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:36:49,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:36:49,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:36:49,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:36:49,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:36:49,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:36:49,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:36:49,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:36:49,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:36:49,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:36:49,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:36:49,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:36:49,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:36:49,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:36:49,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:36:49,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:36:49,517 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-15 20:36:49,537 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:36:49,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:36:49,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:36:49,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:36:49,540 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:36:49,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:36:49,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 20:36:49,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:36:49,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:36:49,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:36:49,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:36:49,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:36:49,543 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-15 20:36:49,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:36:49,543 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:36:49,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:36:49,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:36:49,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:36:49,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:36:49,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:36:49,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:36:49,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:36:49,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:36:49,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:36:49,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:36:49,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:36:49,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:36:49,547 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_d53e0e9f-87af-43ff-ad28-97dc32ed5095/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 [2019-11-15 20:36:49,597 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:36:49,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:36:49,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:36:49,619 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:36:49,620 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:36:49,620 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2019-11-15 20:36:49,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/bin/uautomizer/data/91545ab7a/871aac4c9bd24798837be27997f1304a/FLAG4bf711da5 [2019-11-15 20:36:50,111 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:36:50,111 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2019-11-15 20:36:50,116 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/bin/uautomizer/data/91545ab7a/871aac4c9bd24798837be27997f1304a/FLAG4bf711da5 [2019-11-15 20:36:50,556 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/bin/uautomizer/data/91545ab7a/871aac4c9bd24798837be27997f1304a [2019-11-15 20:36:50,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:36:50,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:36:50,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:36:50,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:36:50,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:36:50,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:36:50" (1/1) ... [2019-11-15 20:36:50,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3edd6274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50, skipping insertion in model container [2019-11-15 20:36:50,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:36:50" (1/1) ... [2019-11-15 20:36:50,581 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:36:50,601 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:36:50,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:36:50,809 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:36:50,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:36:50,973 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:36:50,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50 WrapperNode [2019-11-15 20:36:50,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:36:50,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:36:50,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:36:50,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:36:50,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50" (1/1) ... [2019-11-15 20:36:50,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50" (1/1) ... [2019-11-15 20:36:51,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:36:51,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:36:51,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:36:51,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:36:51,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50" (1/1) ... [2019-11-15 20:36:51,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50" (1/1) ... [2019-11-15 20:36:51,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50" (1/1) ... [2019-11-15 20:36:51,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50" (1/1) ... [2019-11-15 20:36:51,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50" (1/1) ... [2019-11-15 20:36:51,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50" (1/1) ... [2019-11-15 20:36:51,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50" (1/1) ... [2019-11-15 20:36:51,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:36:51,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:36:51,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:36:51,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:36:51,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/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 [2019-11-15 20:36:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:36:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:36:51,444 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:36:51,444 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 20:36:51,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:36:51 BoogieIcfgContainer [2019-11-15 20:36:51,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:36:51,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:36:51,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:36:51,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:36:51,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:36:50" (1/3) ... [2019-11-15 20:36:51,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e911e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:36:51, skipping insertion in model container [2019-11-15 20:36:51,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:36:50" (2/3) ... [2019-11-15 20:36:51,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e911e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:36:51, skipping insertion in model container [2019-11-15 20:36:51,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:36:51" (3/3) ... [2019-11-15 20:36:51,455 INFO L109 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2019-11-15 20:36:51,481 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:36:51,490 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 20:36:51,520 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 20:36:51,574 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:36:51,576 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:36:51,576 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:36:51,577 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:36:51,577 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:36:51,577 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:36:51,577 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:36:51,577 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:36:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-15 20:36:51,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 20:36:51,608 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:36:51,609 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 20:36:51,611 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 20:36:51,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:36:51,620 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2019-11-15 20:36:51,631 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:36:51,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346935389] [2019-11-15 20:36:51,633 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:51,633 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:51,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:36:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:36:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:36:51,800 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346935389] [2019-11-15 20:36:51,801 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:36:51,801 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 20:36:51,801 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569826190] [2019-11-15 20:36:51,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:36:51,806 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:36:51,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:36:51,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:36:51,820 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2019-11-15 20:36:51,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:36:51,885 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-11-15 20:36:51,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:36:51,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-15 20:36:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:36:51,897 INFO L225 Difference]: With dead ends: 29 [2019-11-15 20:36:51,897 INFO L226 Difference]: Without dead ends: 16 [2019-11-15 20:36:51,899 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 [2019-11-15 20:36:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-15 20:36:51,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-15 20:36:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-15 20:36:51,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-15 20:36:51,935 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2019-11-15 20:36:51,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:36:51,935 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-15 20:36:51,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:36:51,936 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-15 20:36:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 20:36:51,936 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:36:51,937 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 20:36:51,937 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 20:36:51,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:36:51,938 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2019-11-15 20:36:51,938 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:36:51,938 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288730915] [2019-11-15 20:36:51,939 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:51,939 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:51,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:36:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:36:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:36:51,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288730915] [2019-11-15 20:36:51,973 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:36:51,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:36:51,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856676969] [2019-11-15 20:36:51,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:36:51,976 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:36:51,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:36:51,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:36:51,977 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2019-11-15 20:36:52,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:36:52,019 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-11-15 20:36:52,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:36:52,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-15 20:36:52,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:36:52,021 INFO L225 Difference]: With dead ends: 30 [2019-11-15 20:36:52,021 INFO L226 Difference]: Without dead ends: 17 [2019-11-15 20:36:52,022 INFO L600 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 [2019-11-15 20:36:52,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-15 20:36:52,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-15 20:36:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-15 20:36:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-15 20:36:52,027 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 5 [2019-11-15 20:36:52,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:36:52,028 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-15 20:36:52,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:36:52,028 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-15 20:36:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 20:36:52,028 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:36:52,029 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 20:36:52,029 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 20:36:52,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:36:52,030 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2019-11-15 20:36:52,030 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:36:52,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887273480] [2019-11-15 20:36:52,030 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:52,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:52,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:36:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:36:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:36:52,076 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887273480] [2019-11-15 20:36:52,077 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:36:52,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 20:36:52,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607686243] [2019-11-15 20:36:52,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:36:52,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:36:52,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:36:52,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:36:52,079 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2019-11-15 20:36:52,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:36:52,111 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2019-11-15 20:36:52,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:36:52,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-15 20:36:52,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:36:52,114 INFO L225 Difference]: With dead ends: 17 [2019-11-15 20:36:52,114 INFO L226 Difference]: Without dead ends: 16 [2019-11-15 20:36:52,114 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 [2019-11-15 20:36:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-15 20:36:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-15 20:36:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-15 20:36:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-15 20:36:52,119 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2019-11-15 20:36:52,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:36:52,119 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-15 20:36:52,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:36:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-15 20:36:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 20:36:52,120 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:36:52,120 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-15 20:36:52,121 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 20:36:52,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:36:52,121 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2019-11-15 20:36:52,121 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:36:52,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075992926] [2019-11-15 20:36:52,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:52,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:52,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:36:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:36:52,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:36:52,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075992926] [2019-11-15 20:36:52,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598820772] [2019-11-15 20:36:52,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/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 [2019-11-15 20:36:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:36:52,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 20:36:52,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:36:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:36:52,249 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:36:52,249 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-15 20:36:52,249 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335395358] [2019-11-15 20:36:52,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:36:52,250 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:36:52,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:36:52,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:36:52,251 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2019-11-15 20:36:52,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:36:52,307 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-15 20:36:52,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:36:52,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-15 20:36:52,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:36:52,309 INFO L225 Difference]: With dead ends: 22 [2019-11-15 20:36:52,309 INFO L226 Difference]: Without dead ends: 21 [2019-11-15 20:36:52,309 INFO L600 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 [2019-11-15 20:36:52,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-15 20:36:52,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-15 20:36:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-15 20:36:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-15 20:36:52,313 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2019-11-15 20:36:52,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:36:52,314 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-15 20:36:52,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:36:52,315 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-15 20:36:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 20:36:52,315 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:36:52,316 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:36:52,520 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:36:52,520 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 20:36:52,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:36:52,521 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2019-11-15 20:36:52,521 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:36:52,521 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683472172] [2019-11-15 20:36:52,521 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:52,521 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:52,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:36:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:36:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 20:36:52,579 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683472172] [2019-11-15 20:36:52,579 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:36:52,579 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 20:36:52,580 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891337773] [2019-11-15 20:36:52,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:36:52,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:36:52,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:36:52,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:36:52,581 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2019-11-15 20:36:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:36:52,621 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-11-15 20:36:52,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:36:52,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-15 20:36:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:36:52,623 INFO L225 Difference]: With dead ends: 33 [2019-11-15 20:36:52,623 INFO L226 Difference]: Without dead ends: 32 [2019-11-15 20:36:52,624 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 [2019-11-15 20:36:52,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-15 20:36:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-11-15 20:36:52,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 20:36:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-11-15 20:36:52,631 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 9 [2019-11-15 20:36:52,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:36:52,632 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-11-15 20:36:52,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:36:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-11-15 20:36:52,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 20:36:52,633 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:36:52,633 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:36:52,634 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 20:36:52,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:36:52,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1897256205, now seen corresponding path program 1 times [2019-11-15 20:36:52,634 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:36:52,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525755005] [2019-11-15 20:36:52,635 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:52,635 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:52,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:36:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:36:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 20:36:52,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525755005] [2019-11-15 20:36:52,664 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:36:52,664 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 20:36:52,665 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701928129] [2019-11-15 20:36:52,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:36:52,665 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:36:52,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:36:52,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:36:52,666 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2019-11-15 20:36:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:36:52,690 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-11-15 20:36:52,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:36:52,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-15 20:36:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:36:52,696 INFO L225 Difference]: With dead ends: 30 [2019-11-15 20:36:52,697 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 20:36:52,697 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 [2019-11-15 20:36:52,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 20:36:52,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-15 20:36:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 20:36:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2019-11-15 20:36:52,704 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 10 [2019-11-15 20:36:52,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:36:52,704 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-11-15 20:36:52,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:36:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2019-11-15 20:36:52,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 20:36:52,705 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:36:52,705 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2019-11-15 20:36:52,706 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 20:36:52,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:36:52,706 INFO L82 PathProgramCache]: Analyzing trace with hash 432560224, now seen corresponding path program 2 times [2019-11-15 20:36:52,710 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:36:52,710 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116197795] [2019-11-15 20:36:52,711 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:52,711 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:52,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:36:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:36:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:36:52,842 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116197795] [2019-11-15 20:36:52,842 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747215153] [2019-11-15 20:36:52,842 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:36:52,879 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 20:36:52,880 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:36:52,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 20:36:52,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:36:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-15 20:36:52,932 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:36:52,933 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2019-11-15 20:36:52,933 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429571471] [2019-11-15 20:36:52,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 20:36:52,934 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:36:52,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 20:36:52,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-15 20:36:52,935 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 10 states. [2019-11-15 20:36:53,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:36:53,317 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2019-11-15 20:36:53,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 20:36:53,320 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2019-11-15 20:36:53,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:36:53,322 INFO L225 Difference]: With dead ends: 43 [2019-11-15 20:36:53,322 INFO L226 Difference]: Without dead ends: 42 [2019-11-15 20:36:53,324 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2019-11-15 20:36:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-15 20:36:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 16. [2019-11-15 20:36:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-15 20:36:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-15 20:36:53,329 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2019-11-15 20:36:53,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:36:53,333 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-15 20:36:53,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 20:36:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-15 20:36:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 20:36:53,334 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:36:53,334 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:36:53,537 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:36:53,538 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 20:36:53,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:36:53,538 INFO L82 PathProgramCache]: Analyzing trace with hash 610055194, now seen corresponding path program 1 times [2019-11-15 20:36:53,538 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:36:53,538 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660610212] [2019-11-15 20:36:53,539 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:53,539 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:53,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:36:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:36:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 20:36:53,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660610212] [2019-11-15 20:36:53,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025255876] [2019-11-15 20:36:53,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/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 [2019-11-15 20:36:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:36:53,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 20:36:53,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:36:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 20:36:53,663 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:36:53,663 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2019-11-15 20:36:53,663 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715284978] [2019-11-15 20:36:53,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:36:53,664 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:36:53,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:36:53,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:36:53,665 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2019-11-15 20:36:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:36:53,799 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-11-15 20:36:53,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 20:36:53,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-15 20:36:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:36:53,800 INFO L225 Difference]: With dead ends: 34 [2019-11-15 20:36:53,800 INFO L226 Difference]: Without dead ends: 27 [2019-11-15 20:36:53,801 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-11-15 20:36:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-15 20:36:53,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-11-15 20:36:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 20:36:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-15 20:36:53,808 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2019-11-15 20:36:53,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:36:53,808 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-15 20:36:53,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:36:53,808 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-15 20:36:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-15 20:36:53,809 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:36:53,809 INFO L380 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2019-11-15 20:36:54,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:36:54,010 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 20:36:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:36:54,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1201123269, now seen corresponding path program 2 times [2019-11-15 20:36:54,011 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:36:54,011 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160378680] [2019-11-15 20:36:54,011 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:54,011 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:36:54,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:36:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:36:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-15 20:36:54,068 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160378680] [2019-11-15 20:36:54,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488652137] [2019-11-15 20:36:54,069 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/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 [2019-11-15 20:36:54,099 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 20:36:54,099 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:36:54,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:36:54,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:36:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-15 20:36:54,132 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:36:54,132 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2] total 6 [2019-11-15 20:36:54,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728516929] [2019-11-15 20:36:54,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 20:36:54,133 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:36:54,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 20:36:54,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:36:54,134 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2019-11-15 20:36:54,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:36:54,222 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2019-11-15 20:36:54,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:36:54,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-15 20:36:54,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:36:54,226 INFO L225 Difference]: With dead ends: 36 [2019-11-15 20:36:54,226 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 20:36:54,227 INFO L600 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 [2019-11-15 20:36:54,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 20:36:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 20:36:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 20:36:54,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 20:36:54,228 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-11-15 20:36:54,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:36:54,229 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:36:54,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 20:36:54,229 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 20:36:54,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 20:36:54,430 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:36:54,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 20:36:54,608 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2019-11-15 20:36:54,610 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 20:36:54,610 INFO L446 ceAbstractionStarter]: At program point L29(lines 13 30) the Hoare annotation is: true [2019-11-15 20:36:54,611 INFO L443 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-11-15 20:36:54,611 INFO L443 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-11-15 20:36:54,611 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 26) no Hoare annotation was computed. [2019-11-15 20:36:54,611 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-15 20:36:54,611 INFO L439 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))) [2019-11-15 20:36:54,612 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 28) no Hoare annotation was computed. [2019-11-15 20:36:54,612 INFO L443 ceAbstractionStarter]: For program point L17-1(lines 17 28) no Hoare annotation was computed. [2019-11-15 20:36:54,613 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-15 20:36:54,613 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2019-11-15 20:36:54,613 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 20:36:54,613 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 20:36:54,614 INFO L443 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-15 20:36:54,614 INFO L443 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-15 20:36:54,615 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2019-11-15 20:36:54,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:36:54 BoogieIcfgContainer [2019-11-15 20:36:54,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:36:54,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:36:54,640 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:36:54,640 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:36:54,641 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:36:51" (3/4) ... [2019-11-15 20:36:54,646 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 20:36:54,657 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 20:36:54,658 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 20:36:54,706 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d53e0e9f-87af-43ff-ad28-97dc32ed5095/bin/uautomizer/witness.graphml [2019-11-15 20:36:54,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:36:54,708 INFO L168 Benchmark]: Toolchain (without parser) took 4147.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 946.1 MB in the beginning and 969.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 151.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:36:54,708 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:36:54,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -222.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-15 20:36:54,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:36:54,710 INFO L168 Benchmark]: Boogie Preprocessor took 29.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:36:54,711 INFO L168 Benchmark]: RCFGBuilder took 400.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-11-15 20:36:54,712 INFO L168 Benchmark]: TraceAbstraction took 3192.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.6 MB in the end (delta: 172.3 MB). Peak memory consumption was 172.3 MB. Max. memory is 11.5 GB. [2019-11-15 20:36:54,712 INFO L168 Benchmark]: Witness Printer took 66.69 ms. Allocated memory is still 1.2 GB. Free memory was 976.6 MB in the beginning and 969.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-15 20:36:54,715 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 414.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -222.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 400.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3192.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.6 MB in the end (delta: 172.3 MB). Peak memory consumption was 172.3 MB. Max. memory is 11.5 GB. * Witness Printer took 66.69 ms. Allocated memory is still 1.2 GB. Free memory was 976.6 MB in the beginning and 969.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. 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: 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: 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: 3.0s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 66 SDtfs, 141 SDslu, 30 SDs, 0 SdLazy, 125 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s 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, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s 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...