./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/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 457415f9b28998cf0ba7f80d69eaf14873f5a98f .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 11:28:36,795 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:28:36,796 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:28:36,803 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:28:36,803 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:28:36,804 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:28:36,805 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:28:36,806 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:28:36,807 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:28:36,808 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:28:36,808 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:28:36,808 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:28:36,809 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:28:36,810 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:28:36,811 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:28:36,811 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:28:36,812 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:28:36,813 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:28:36,814 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:28:36,815 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:28:36,816 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:28:36,817 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:28:36,818 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:28:36,819 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:28:36,819 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:28:36,819 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:28:36,820 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:28:36,821 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:28:36,821 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:28:36,822 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:28:36,822 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:28:36,823 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:28:36,823 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:28:36,823 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:28:36,823 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:28:36,824 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:28:36,824 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-18 11:28:36,833 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:28:36,834 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:28:36,834 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:28:36,834 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 11:28:36,835 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:28:36,835 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:28:36,835 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 11:28:36,835 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:28:36,835 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 11:28:36,836 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:28:36,836 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:28:36,836 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:28:36,836 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:28:36,836 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:28:36,836 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 11:28:36,836 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:28:36,836 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:28:36,837 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:28:36,837 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:28:36,837 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:28:36,837 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:28:36,837 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:28:36,837 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:28:36,837 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:28:36,837 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:28:36,838 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:28:36,838 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 11:28:36,838 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:28:36,838 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:28:36,838 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/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 -> 457415f9b28998cf0ba7f80d69eaf14873f5a98f [2018-11-18 11:28:36,860 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:28:36,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:28:36,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:28:36,870 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:28:36,871 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:28:36,871 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c [2018-11-18 11:28:36,905 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/data/e01cf75ea/fdbf0b9612b14c16ad25424ff6ca6031/FLAG988eb8b1c [2018-11-18 11:28:37,300 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:28:37,300 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c [2018-11-18 11:28:37,304 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/data/e01cf75ea/fdbf0b9612b14c16ad25424ff6ca6031/FLAG988eb8b1c [2018-11-18 11:28:37,314 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/data/e01cf75ea/fdbf0b9612b14c16ad25424ff6ca6031 [2018-11-18 11:28:37,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:28:37,317 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 11:28:37,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:28:37,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:28:37,320 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:28:37,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:28:37" (1/1) ... [2018-11-18 11:28:37,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5337ef55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:28:37, skipping insertion in model container [2018-11-18 11:28:37,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:28:37" (1/1) ... [2018-11-18 11:28:37,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:28:37,338 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:28:37,446 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:28:37,448 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:28:37,457 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:28:37,465 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:28:37,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:28:37 WrapperNode [2018-11-18 11:28:37,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:28:37,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:28:37,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:28:37,466 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:28:37,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:28:37" (1/1) ... [2018-11-18 11:28:37,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:28:37" (1/1) ... [2018-11-18 11:28:37,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:28:37" (1/1) ... [2018-11-18 11:28:37,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:28:37" (1/1) ... [2018-11-18 11:28:37,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:28:37" (1/1) ... [2018-11-18 11:28:37,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:28:37" (1/1) ... [2018-11-18 11:28:37,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:28:37" (1/1) ... [2018-11-18 11:28:37,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:28:37,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:28:37,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:28:37,482 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:28:37,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:28:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/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 [2018-11-18 11:28:37,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:28:37,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:28:37,562 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-18 11:28:37,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:28:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 11:28:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-18 11:28:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:28:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:28:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:28:37,707 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:28:37,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:28:37 BoogieIcfgContainer [2018-11-18 11:28:37,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:28:37,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:28:37,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:28:37,712 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:28:37,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:28:37" (1/3) ... [2018-11-18 11:28:37,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731355fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:28:37, skipping insertion in model container [2018-11-18 11:28:37,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:28:37" (2/3) ... [2018-11-18 11:28:37,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731355fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:28:37, skipping insertion in model container [2018-11-18 11:28:37,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:28:37" (3/3) ... [2018-11-18 11:28:37,715 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5_true-termination_true-no-overflow.c [2018-11-18 11:28:37,723 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:28:37,730 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 11:28:37,743 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 11:28:37,767 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:28:37,768 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:28:37,768 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:28:37,768 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:28:37,768 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:28:37,768 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:28:37,768 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:28:37,768 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:28:37,769 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:28:37,785 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-11-18 11:28:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 11:28:37,789 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:37,789 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:37,791 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:37,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:37,796 INFO L82 PathProgramCache]: Analyzing trace with hash 968375894, now seen corresponding path program 1 times [2018-11-18 11:28:37,797 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:37,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:37,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:37,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:37,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:37,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:28:37,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:28:37,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:28:37,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:28:37,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:28:37,943 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2018-11-18 11:28:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:38,042 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-18 11:28:38,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:28:38,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-18 11:28:38,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:38,050 INFO L225 Difference]: With dead ends: 49 [2018-11-18 11:28:38,050 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 11:28:38,052 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:28:38,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 11:28:38,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2018-11-18 11:28:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 11:28:38,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-11-18 11:28:38,079 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2018-11-18 11:28:38,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:38,079 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-11-18 11:28:38,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:28:38,079 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-18 11:28:38,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 11:28:38,079 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:38,080 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:38,080 INFO L423 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:38,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:38,080 INFO L82 PathProgramCache]: Analyzing trace with hash 968376118, now seen corresponding path program 1 times [2018-11-18 11:28:38,080 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:38,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:38,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:38,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:38,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:28:38,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:28:38,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:28:38,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:28:38,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:28:38,140 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2018-11-18 11:28:38,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:38,199 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2018-11-18 11:28:38,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:28:38,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-18 11:28:38,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:38,200 INFO L225 Difference]: With dead ends: 38 [2018-11-18 11:28:38,200 INFO L226 Difference]: Without dead ends: 37 [2018-11-18 11:28:38,201 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:28:38,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-18 11:28:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2018-11-18 11:28:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 11:28:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-18 11:28:38,205 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2018-11-18 11:28:38,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:38,206 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-18 11:28:38,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:28:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-18 11:28:38,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 11:28:38,206 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:38,206 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:38,207 INFO L423 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:38,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:38,207 INFO L82 PathProgramCache]: Analyzing trace with hash -45118316, now seen corresponding path program 1 times [2018-11-18 11:28:38,207 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:38,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:38,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:38,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:38,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:28:38,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:28:38,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:28:38,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:28:38,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:28:38,255 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2018-11-18 11:28:38,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:38,295 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-11-18 11:28:38,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:28:38,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-18 11:28:38,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:38,297 INFO L225 Difference]: With dead ends: 37 [2018-11-18 11:28:38,297 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 11:28:38,297 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:28:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 11:28:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-18 11:28:38,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 11:28:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-11-18 11:28:38,303 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 12 [2018-11-18 11:28:38,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:38,303 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-18 11:28:38,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:28:38,303 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-11-18 11:28:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 11:28:38,303 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:38,304 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:38,304 INFO L423 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:38,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:38,304 INFO L82 PathProgramCache]: Analyzing trace with hash -45111365, now seen corresponding path program 1 times [2018-11-18 11:28:38,304 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:38,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:38,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:38,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:38,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:28:38,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:28:38,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:28:38,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:28:38,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:28:38,336 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2018-11-18 11:28:38,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:38,365 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-18 11:28:38,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:28:38,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-18 11:28:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:38,366 INFO L225 Difference]: With dead ends: 36 [2018-11-18 11:28:38,366 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 11:28:38,366 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:28:38,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 11:28:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-18 11:28:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 11:28:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-18 11:28:38,370 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 12 [2018-11-18 11:28:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:38,371 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-18 11:28:38,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:28:38,371 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-18 11:28:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 11:28:38,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:38,371 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:38,372 INFO L423 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:38,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:38,372 INFO L82 PathProgramCache]: Analyzing trace with hash -489425099, now seen corresponding path program 1 times [2018-11-18 11:28:38,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:38,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:38,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:38,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:38,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:28:38,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:28:38,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:28:38,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:28:38,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:28:38,404 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2018-11-18 11:28:38,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:38,456 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2018-11-18 11:28:38,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:28:38,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-18 11:28:38,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:38,457 INFO L225 Difference]: With dead ends: 47 [2018-11-18 11:28:38,457 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 11:28:38,458 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:28:38,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 11:28:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2018-11-18 11:28:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 11:28:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2018-11-18 11:28:38,462 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 17 [2018-11-18 11:28:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:38,462 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2018-11-18 11:28:38,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:28:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2018-11-18 11:28:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 11:28:38,463 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:38,463 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:38,463 INFO L423 AbstractCegarLoop]: === Iteration 6 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:38,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:38,463 INFO L82 PathProgramCache]: Analyzing trace with hash 945154704, now seen corresponding path program 1 times [2018-11-18 11:28:38,463 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:38,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:38,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:38,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:38,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:38,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:38,507 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:38,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:38,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:38,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 11:28:38,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2018-11-18 11:28:38,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:28:38,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:28:38,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:28:38,597 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 8 states. [2018-11-18 11:28:38,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:38,726 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-11-18 11:28:38,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 11:28:38,727 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-18 11:28:38,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:38,728 INFO L225 Difference]: With dead ends: 54 [2018-11-18 11:28:38,728 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 11:28:38,728 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2018-11-18 11:28:38,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 11:28:38,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-11-18 11:28:38,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 11:28:38,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-11-18 11:28:38,731 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 17 [2018-11-18 11:28:38,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:38,732 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-11-18 11:28:38,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:28:38,732 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-11-18 11:28:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 11:28:38,733 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:38,733 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:38,733 INFO L423 AbstractCegarLoop]: === Iteration 7 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:38,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:38,733 INFO L82 PathProgramCache]: Analyzing trace with hash 945154928, now seen corresponding path program 1 times [2018-11-18 11:28:38,733 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:38,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:38,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:38,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:38,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:38,776 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:38,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:38,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:38,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:28:38,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 11:28:38,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 11:28:38,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 11:28:38,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:28:38,819 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2018-11-18 11:28:38,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:38,912 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-11-18 11:28:38,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 11:28:38,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-11-18 11:28:38,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:38,913 INFO L225 Difference]: With dead ends: 42 [2018-11-18 11:28:38,913 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 11:28:38,913 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-11-18 11:28:38,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 11:28:38,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2018-11-18 11:28:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 11:28:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-11-18 11:28:38,919 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 17 [2018-11-18 11:28:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:38,920 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-11-18 11:28:38,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 11:28:38,920 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-11-18 11:28:38,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 11:28:38,920 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:38,921 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:38,921 INFO L423 AbstractCegarLoop]: === Iteration 8 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:38,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:38,921 INFO L82 PathProgramCache]: Analyzing trace with hash 2007691164, now seen corresponding path program 1 times [2018-11-18 11:28:38,921 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:38,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:38,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:38,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:38,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:38,963 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:38,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:38,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:39,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 11:28:39,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2018-11-18 11:28:39,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 11:28:39,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 11:28:39,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:28:39,014 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 10 states. [2018-11-18 11:28:39,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:39,085 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-11-18 11:28:39,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 11:28:39,086 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-11-18 11:28:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:39,086 INFO L225 Difference]: With dead ends: 49 [2018-11-18 11:28:39,087 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 11:28:39,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-11-18 11:28:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 11:28:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2018-11-18 11:28:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 11:28:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-11-18 11:28:39,093 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 18 [2018-11-18 11:28:39,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:39,094 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-11-18 11:28:39,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 11:28:39,094 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-11-18 11:28:39,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 11:28:39,094 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:39,095 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:39,096 INFO L423 AbstractCegarLoop]: === Iteration 9 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:39,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:39,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1188297686, now seen corresponding path program 2 times [2018-11-18 11:28:39,096 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:39,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:39,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:39,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:39,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:39,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:39,137 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:39,144 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:28:39,157 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:28:39,158 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:28:39,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:39,183 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:28:39,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 11:28:39,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 11:28:39,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 11:28:39,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:28:39,184 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 7 states. [2018-11-18 11:28:39,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:39,267 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-11-18 11:28:39,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 11:28:39,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-18 11:28:39,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:39,268 INFO L225 Difference]: With dead ends: 55 [2018-11-18 11:28:39,268 INFO L226 Difference]: Without dead ends: 54 [2018-11-18 11:28:39,268 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-11-18 11:28:39,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-18 11:28:39,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 28. [2018-11-18 11:28:39,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 11:28:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-11-18 11:28:39,272 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 23 [2018-11-18 11:28:39,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:39,272 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-11-18 11:28:39,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 11:28:39,272 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-11-18 11:28:39,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 11:28:39,273 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:39,273 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:39,273 INFO L423 AbstractCegarLoop]: === Iteration 10 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:39,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:39,273 INFO L82 PathProgramCache]: Analyzing trace with hash 894148066, now seen corresponding path program 1 times [2018-11-18 11:28:39,273 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:39,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:39,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:39,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:28:39,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:39,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:39,328 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:39,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:39,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:39,371 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:28:39,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-18 11:28:39,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 11:28:39,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 11:28:39,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:28:39,372 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2018-11-18 11:28:39,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:39,445 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-11-18 11:28:39,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 11:28:39,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-18 11:28:39,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:39,447 INFO L225 Difference]: With dead ends: 41 [2018-11-18 11:28:39,447 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 11:28:39,447 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-11-18 11:28:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 11:28:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2018-11-18 11:28:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 11:28:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-11-18 11:28:39,451 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2018-11-18 11:28:39,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:39,451 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-11-18 11:28:39,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 11:28:39,451 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-11-18 11:28:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 11:28:39,451 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:39,452 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:39,452 INFO L423 AbstractCegarLoop]: === Iteration 11 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:39,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:39,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1817477447, now seen corresponding path program 1 times [2018-11-18 11:28:39,452 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:39,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:39,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:39,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:39,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:39,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:39,503 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:39,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:39,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:39,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:28:39,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-18 11:28:39,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 11:28:39,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 11:28:39,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:28:39,541 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2018-11-18 11:28:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:39,605 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2018-11-18 11:28:39,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:28:39,606 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-18 11:28:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:39,606 INFO L225 Difference]: With dead ends: 47 [2018-11-18 11:28:39,606 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 11:28:39,607 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-11-18 11:28:39,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 11:28:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2018-11-18 11:28:39,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 11:28:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-11-18 11:28:39,615 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 24 [2018-11-18 11:28:39,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:39,615 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-11-18 11:28:39,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 11:28:39,615 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-11-18 11:28:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 11:28:39,616 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:39,616 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:39,616 INFO L423 AbstractCegarLoop]: === Iteration 12 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:39,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:39,617 INFO L82 PathProgramCache]: Analyzing trace with hash 774242216, now seen corresponding path program 2 times [2018-11-18 11:28:39,617 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:39,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:39,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:39,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:28:39,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:39,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:39,673 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:39,680 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:28:39,697 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:28:39,697 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:28:39,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:39,720 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:28:39,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-18 11:28:39,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 11:28:39,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 11:28:39,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:28:39,721 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2018-11-18 11:28:39,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:39,833 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2018-11-18 11:28:39,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 11:28:39,833 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2018-11-18 11:28:39,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:39,834 INFO L225 Difference]: With dead ends: 54 [2018-11-18 11:28:39,834 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 11:28:39,835 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2018-11-18 11:28:39,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 11:28:39,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2018-11-18 11:28:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 11:28:39,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2018-11-18 11:28:39,840 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 30 [2018-11-18 11:28:39,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:39,840 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2018-11-18 11:28:39,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 11:28:39,841 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2018-11-18 11:28:39,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 11:28:39,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:39,841 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:39,845 INFO L423 AbstractCegarLoop]: === Iteration 13 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:39,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:39,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1039829778, now seen corresponding path program 3 times [2018-11-18 11:28:39,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:39,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:39,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:39,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:28:39,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:39,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:39,936 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:39,952 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:28:39,968 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-18 11:28:39,968 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:28:39,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:40,002 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:28:40,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-18 11:28:40,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 11:28:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 11:28:40,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-11-18 11:28:40,003 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 13 states. [2018-11-18 11:28:40,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:40,130 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-11-18 11:28:40,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-18 11:28:40,130 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-11-18 11:28:40,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:40,131 INFO L225 Difference]: With dead ends: 65 [2018-11-18 11:28:40,131 INFO L226 Difference]: Without dead ends: 64 [2018-11-18 11:28:40,131 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2018-11-18 11:28:40,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-18 11:28:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2018-11-18 11:28:40,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 11:28:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-11-18 11:28:40,138 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 36 [2018-11-18 11:28:40,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:40,139 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-11-18 11:28:40,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 11:28:40,139 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-11-18 11:28:40,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 11:28:40,139 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:40,139 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:40,140 INFO L423 AbstractCegarLoop]: === Iteration 14 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:40,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:40,140 INFO L82 PathProgramCache]: Analyzing trace with hash -175937325, now seen corresponding path program 2 times [2018-11-18 11:28:40,140 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:40,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:40,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:40,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:28:40,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:40,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:40,222 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:40,231 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:28:40,249 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:28:40,249 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:28:40,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:40,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:28:40,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-18 11:28:40,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 11:28:40,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 11:28:40,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-11-18 11:28:40,273 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 13 states. [2018-11-18 11:28:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:40,363 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2018-11-18 11:28:40,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 11:28:40,364 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-11-18 11:28:40,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:40,364 INFO L225 Difference]: With dead ends: 71 [2018-11-18 11:28:40,365 INFO L226 Difference]: Without dead ends: 70 [2018-11-18 11:28:40,365 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-11-18 11:28:40,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-18 11:28:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 46. [2018-11-18 11:28:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 11:28:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2018-11-18 11:28:40,374 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 36 [2018-11-18 11:28:40,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:40,374 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2018-11-18 11:28:40,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 11:28:40,374 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2018-11-18 11:28:40,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 11:28:40,375 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:40,375 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:40,375 INFO L423 AbstractCegarLoop]: === Iteration 15 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:40,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:40,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1655528884, now seen corresponding path program 4 times [2018-11-18 11:28:40,375 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:40,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:40,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:40,376 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:28:40,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-18 11:28:40,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:40,440 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:40,455 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:28:40,464 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:28:40,464 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:28:40,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 64 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 11:28:40,626 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:28:40,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 20 [2018-11-18 11:28:40,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-18 11:28:40,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-18 11:28:40,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2018-11-18 11:28:40,627 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 21 states. [2018-11-18 11:28:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:40,831 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2018-11-18 11:28:40,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 11:28:40,831 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2018-11-18 11:28:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:40,831 INFO L225 Difference]: With dead ends: 88 [2018-11-18 11:28:40,831 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 11:28:40,832 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2018-11-18 11:28:40,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 11:28:40,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-18 11:28:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 11:28:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-11-18 11:28:40,840 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2018-11-18 11:28:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:40,840 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-11-18 11:28:40,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-18 11:28:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-11-18 11:28:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 11:28:40,842 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:40,842 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:40,842 INFO L423 AbstractCegarLoop]: === Iteration 16 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:40,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:40,842 INFO L82 PathProgramCache]: Analyzing trace with hash -734568865, now seen corresponding path program 3 times [2018-11-18 11:28:40,842 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:40,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:40,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:40,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:28:40,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:40,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:40,946 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:40,960 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:28:40,976 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-11-18 11:28:40,976 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:28:40,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:41,016 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:28:41,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-11-18 11:28:41,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 11:28:41,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 11:28:41,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-11-18 11:28:41,017 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 17 states. [2018-11-18 11:28:41,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:41,188 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-11-18 11:28:41,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 11:28:41,188 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2018-11-18 11:28:41,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:41,189 INFO L225 Difference]: With dead ends: 63 [2018-11-18 11:28:41,189 INFO L226 Difference]: Without dead ends: 62 [2018-11-18 11:28:41,190 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2018-11-18 11:28:41,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-18 11:28:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-11-18 11:28:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-18 11:28:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-11-18 11:28:41,201 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 48 [2018-11-18 11:28:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:41,201 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-11-18 11:28:41,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 11:28:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-11-18 11:28:41,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 11:28:41,202 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:28:41,202 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:28:41,203 INFO L423 AbstractCegarLoop]: === Iteration 17 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:28:41,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:28:41,203 INFO L82 PathProgramCache]: Analyzing trace with hash 323707371, now seen corresponding path program 4 times [2018-11-18 11:28:41,203 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:28:41,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:28:41,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:41,204 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:28:41,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:28:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:28:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:28:41,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:41,358 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:41,364 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:28:41,375 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:28:41,375 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:28:41,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 20 proven. 138 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-18 11:28:41,504 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:28:41,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9] total 25 [2018-11-18 11:28:41,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-18 11:28:41,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-18 11:28:41,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2018-11-18 11:28:41,505 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 26 states. [2018-11-18 11:28:41,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:28:41,656 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-11-18 11:28:41,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 11:28:41,657 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2018-11-18 11:28:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:28:41,657 INFO L225 Difference]: With dead ends: 61 [2018-11-18 11:28:41,657 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 11:28:41,658 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=758, Unknown=0, NotChecked=0, Total=930 [2018-11-18 11:28:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 11:28:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 11:28:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 11:28:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 11:28:41,659 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2018-11-18 11:28:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:28:41,659 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:28:41,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-18 11:28:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:28:41,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 11:28:41,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 11:28:41,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,723 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,727 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,732 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,752 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,759 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,762 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,790 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,791 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,791 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,792 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,819 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,820 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,821 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,821 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,822 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,851 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,851 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,852 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,854 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,874 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,879 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,880 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,881 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,882 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,883 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,911 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,934 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,935 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,936 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,936 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,938 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,963 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,967 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,968 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,969 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,970 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,971 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,995 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:41,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,000 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,002 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,003 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,031 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,032 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,032 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,033 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,035 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,058 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,059 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,059 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,061 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,081 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,087 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,088 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,089 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,090 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,091 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,115 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,116 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,116 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,117 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,118 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,124 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,128 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,128 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,135 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,138 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,165 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,166 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,167 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,168 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 11:28:42,359 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 27 [2018-11-18 11:28:42,911 WARN L180 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 46 [2018-11-18 11:28:42,912 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 11:28:42,913 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:28:42,913 INFO L425 ceAbstractionStarter]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-18 11:28:42,913 INFO L425 ceAbstractionStarter]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-18 11:28:42,913 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-18 11:28:42,913 INFO L425 ceAbstractionStarter]: For program point fFINAL(lines 13 23) no Hoare annotation was computed. [2018-11-18 11:28:42,913 INFO L425 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-11-18 11:28:42,913 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-18 11:28:42,913 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-18 11:28:42,914 INFO L421 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse1 (< 2147483647 |f_#in~y|)) (.cse2 (< 2147483647 |f_#in~x|))) (let ((.cse3 (or (= 0 |f_#in~x|) .cse1 .cse2)) (.cse0 (< |f_#in~y| 0)) (.cse4 (< |f_#in~x| 1))) (and (or .cse0 .cse1 (< |f_#in~x| 0) (and (not (= 0 f_~y)) (<= f_~x 2147483648) (<= 0 f_~x) (not (= 0 f_~x)) (<= f_~y 2147483647) (<= 0 f_~y)) .cse2) (or .cse3 (<= f_~x f_~y) (< |f_#in~y| |f_#in~x|) .cse4) (let ((.cse5 (+ |f_#in~y| 1))) (or (< .cse5 0) (< |f_#in~x| .cse5) (= .cse5 0) .cse3 (<= (+ f_~y 1) f_~x))) (or .cse3 (<= f_~x 2147483647) .cse0 .cse4)))) [2018-11-18 11:28:42,914 INFO L425 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2018-11-18 11:28:42,914 INFO L425 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-11-18 11:28:42,914 INFO L425 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2018-11-18 11:28:42,914 INFO L421 ceAbstractionStarter]: At program point L18-2(line 18) the Hoare annotation is: (let ((.cse1 (< 2147483647 |f_#in~y|)) (.cse2 (< 2147483647 |f_#in~x|)) (.cse0 (< |f_#in~y| 0))) (and (or (and (not (= 0 f_~y)) (<= 0 f_~x) (<= f_~x f_~y) (<= f_~y 2147483647)) .cse0 .cse1 (< |f_#in~x| 0) .cse2) (or (or .cse1 .cse2) .cse0 (< |f_#in~x| 1)))) [2018-11-18 11:28:42,914 INFO L425 ceAbstractionStarter]: For program point L18-3(line 18) no Hoare annotation was computed. [2018-11-18 11:28:42,914 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 22) no Hoare annotation was computed. [2018-11-18 11:28:42,914 INFO L425 ceAbstractionStarter]: For program point fEXIT(lines 13 23) no Hoare annotation was computed. [2018-11-18 11:28:42,914 INFO L428 ceAbstractionStarter]: At program point fENTRY(lines 13 23) the Hoare annotation is: true [2018-11-18 11:28:42,914 INFO L425 ceAbstractionStarter]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-18 11:28:42,914 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:28:42,914 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 11:28:42,915 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:28:42,915 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:28:42,915 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 25 32) the Hoare annotation is: true [2018-11-18 11:28:42,915 INFO L421 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= main_~y~0 2147483647) (<= 0 main_~y~0) (<= 0 main_~x~0)) [2018-11-18 11:28:42,915 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 25 32) no Hoare annotation was computed. [2018-11-18 11:28:42,915 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-11-18 11:28:42,915 INFO L425 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-11-18 11:28:42,915 INFO L425 ceAbstractionStarter]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2018-11-18 11:28:42,915 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 25 32) no Hoare annotation was computed. [2018-11-18 11:28:42,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:28:42 BoogieIcfgContainer [2018-11-18 11:28:42,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:28:42,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:28:42,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:28:42,918 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:28:42,918 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:28:37" (3/4) ... [2018-11-18 11:28:42,921 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 11:28:42,926 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 11:28:42,926 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-11-18 11:28:42,927 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 11:28:42,929 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 11:28:42,929 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 11:28:42,930 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 11:28:42,959 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_10fcff7c-4d78-451e-9373-b08028e63b42/bin-2019/uautomizer/witness.graphml [2018-11-18 11:28:42,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:28:42,959 INFO L168 Benchmark]: Toolchain (without parser) took 5642.43 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 281.5 MB). Free memory was 959.1 MB in the beginning and 1.3 GB in the end (delta: -302.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:28:42,960 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:28:42,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.19 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:28:42,961 INFO L168 Benchmark]: Boogie Preprocessor took 16.29 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:28:42,961 INFO L168 Benchmark]: RCFGBuilder took 225.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -145.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:28:42,961 INFO L168 Benchmark]: TraceAbstraction took 5209.25 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 175.6 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -179.3 MB). Peak memory consumption was 472.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:28:42,961 INFO L168 Benchmark]: Witness Printer took 41.00 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:28:42,963 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.19 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.29 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 225.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.9 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -145.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5209.25 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 175.6 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -179.3 MB). Peak memory consumption was 472.5 MB. Max. memory is 11.5 GB. * Witness Printer took 41.00 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 4 error locations. SAFE Result, 5.1s OverallTime, 17 OverallIterations, 9 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 1.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 286 SDtfs, 549 SDslu, 1239 SDs, 0 SdLazy, 1399 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 604 GetRequests, 373 SyntacticMatches, 3 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 146 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 59 PreInvPairs, 59 NumberOfFragments, 190 HoareAnnotationTreeSize, 59 FomulaSimplifications, 532393 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 8 FomulaSimplificationsInter, 45925 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 813 NumberOfCodeBlocks, 813 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 784 ConstructedInterpolants, 0 QuantifiedInterpolants, 104453 SizeOfPredicates, 50 NumberOfNonLiveVariables, 957 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 29 InterpolantComputations, 7 PerfectInterpolantSequences, 130/1155 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...