./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.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_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 0455ba49274114922cfe1b7739d9cb0a89e6c868 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 11:41:00,932 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:41:00,933 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:41:00,941 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:41:00,942 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:41:00,942 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:41:00,943 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:41:00,944 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:41:00,945 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:41:00,946 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:41:00,946 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:41:00,947 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:41:00,947 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:41:00,948 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:41:00,949 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:41:00,949 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:41:00,950 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:41:00,951 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:41:00,952 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:41:00,953 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:41:00,954 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:41:00,955 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:41:00,956 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:41:00,956 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:41:00,956 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:41:00,957 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:41:00,958 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:41:00,958 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:41:00,959 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:41:00,959 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:41:00,960 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:41:00,960 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:41:00,960 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:41:00,960 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:41:00,961 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:41:00,962 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:41:00,962 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-18 11:41:00,971 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:41:00,971 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:41:00,972 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:41:00,972 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 11:41:00,972 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:41:00,972 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:41:00,973 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 11:41:00,973 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:41:00,973 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 11:41:00,973 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:41:00,973 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:41:00,973 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:41:00,973 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:41:00,974 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:41:00,974 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 11:41:00,974 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:41:00,974 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:41:00,974 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:41:00,974 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:41:00,974 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:41:00,974 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:41:00,975 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:41:00,975 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:41:00,975 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:41:00,975 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:41:00,975 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:41:00,975 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 11:41:00,975 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:41:00,976 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:41:00,976 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_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2018-11-18 11:41:00,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:41:01,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:41:01,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:41:01,011 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:41:01,011 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:41:01,011 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-18 11:41:01,058 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/data/544437503/b84110d95e57417587046d3365888587/FLAG8e66d0302 [2018-11-18 11:41:01,374 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:41:01,374 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-18 11:41:01,379 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/data/544437503/b84110d95e57417587046d3365888587/FLAG8e66d0302 [2018-11-18 11:41:01,812 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/data/544437503/b84110d95e57417587046d3365888587 [2018-11-18 11:41:01,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:41:01,815 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 11:41:01,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:41:01,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:41:01,818 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:41:01,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:41:01" (1/1) ... [2018-11-18 11:41:01,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795587e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:01, skipping insertion in model container [2018-11-18 11:41:01,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:41:01" (1/1) ... [2018-11-18 11:41:01,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:41:01,837 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:41:01,933 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:41:01,935 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:41:01,944 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:41:01,951 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:41:01,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:01 WrapperNode [2018-11-18 11:41:01,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:41:01,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:41:01,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:41:01,952 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:41:01,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:01" (1/1) ... [2018-11-18 11:41:01,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:01" (1/1) ... [2018-11-18 11:41:01,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:01" (1/1) ... [2018-11-18 11:41:01,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:01" (1/1) ... [2018-11-18 11:41:01,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:01" (1/1) ... [2018-11-18 11:41:01,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:01" (1/1) ... [2018-11-18 11:41:01,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:01" (1/1) ... [2018-11-18 11:41:01,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:41:01,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:41:01,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:41:01,970 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:41:01,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:02,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:41:02,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:41:02,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:41:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 11:41:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:41:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:41:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:41:02,177 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:41:02,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:41:02 BoogieIcfgContainer [2018-11-18 11:41:02,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:41:02,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:41:02,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:41:02,181 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:41:02,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:41:01" (1/3) ... [2018-11-18 11:41:02,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83ffd6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:41:02, skipping insertion in model container [2018-11-18 11:41:02,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:41:01" (2/3) ... [2018-11-18 11:41:02,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83ffd6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:41:02, skipping insertion in model container [2018-11-18 11:41:02,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:41:02" (3/3) ... [2018-11-18 11:41:02,183 INFO L112 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-18 11:41:02,189 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:41:02,194 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 11:41:02,203 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 11:41:02,221 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:41:02,222 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:41:02,222 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:41:02,222 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:41:02,222 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:41:02,222 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:41:02,222 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:41:02,222 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:41:02,222 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:41:02,237 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-18 11:41:02,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 11:41:02,242 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:02,243 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:02,244 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:02,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:02,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1241711279, now seen corresponding path program 1 times [2018-11-18 11:41:02,251 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:02,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:02,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:02,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:02,335 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 11:41:02,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:41:02,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:41:02,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:41:02,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:41:02,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:41:02,348 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2018-11-18 11:41:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:02,413 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2018-11-18 11:41:02,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:41:02,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-18 11:41:02,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:02,419 INFO L225 Difference]: With dead ends: 43 [2018-11-18 11:41:02,420 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 11:41:02,421 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:41:02,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 11:41:02,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-11-18 11:41:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 11:41:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2018-11-18 11:41:02,445 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 9 [2018-11-18 11:41:02,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:02,445 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2018-11-18 11:41:02,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:41:02,446 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2018-11-18 11:41:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 11:41:02,446 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:02,446 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:02,446 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:02,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:02,447 INFO L82 PathProgramCache]: Analyzing trace with hash -161655964, now seen corresponding path program 1 times [2018-11-18 11:41:02,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:02,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:02,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:02,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:02,460 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 11:41:02,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:41:02,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:41:02,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:41:02,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:41:02,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:41:02,462 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 3 states. [2018-11-18 11:41:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:02,475 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2018-11-18 11:41:02,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:41:02,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 11:41:02,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:02,476 INFO L225 Difference]: With dead ends: 36 [2018-11-18 11:41:02,476 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 11:41:02,476 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:41:02,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 11:41:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2018-11-18 11:41:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 11:41:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-18 11:41:02,480 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 10 [2018-11-18 11:41:02,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:02,480 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-18 11:41:02,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:41:02,480 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-18 11:41:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 11:41:02,481 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:02,481 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:02,481 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:02,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:02,481 INFO L82 PathProgramCache]: Analyzing trace with hash -716367528, now seen corresponding path program 1 times [2018-11-18 11:41:02,481 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:02,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:02,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:02,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:02,497 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 11:41:02,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:41:02,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:41:02,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:41:02,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:41:02,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:41:02,498 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 3 states. [2018-11-18 11:41:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:02,520 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-18 11:41:02,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:41:02,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 11:41:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:02,521 INFO L225 Difference]: With dead ends: 46 [2018-11-18 11:41:02,521 INFO L226 Difference]: Without dead ends: 25 [2018-11-18 11:41:02,522 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:41:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-18 11:41:02,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-11-18 11:41:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 11:41:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-18 11:41:02,526 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2018-11-18 11:41:02,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:02,526 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-18 11:41:02,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:41:02,526 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-18 11:41:02,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 11:41:02,527 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:02,527 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:02,527 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:02,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:02,527 INFO L82 PathProgramCache]: Analyzing trace with hash -732556826, now seen corresponding path program 1 times [2018-11-18 11:41:02,528 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:02,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:02,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:02,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:02,546 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 11:41:02,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:41:02,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:41:02,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:41:02,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:41:02,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:41:02,547 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2018-11-18 11:41:02,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:02,572 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-11-18 11:41:02,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:41:02,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-18 11:41:02,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:02,573 INFO L225 Difference]: With dead ends: 24 [2018-11-18 11:41:02,574 INFO L226 Difference]: Without dead ends: 23 [2018-11-18 11:41:02,574 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:41:02,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-18 11:41:02,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-18 11:41:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 11:41:02,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-11-18 11:41:02,577 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 12 [2018-11-18 11:41:02,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:02,577 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-11-18 11:41:02,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:41:02,578 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-11-18 11:41:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 11:41:02,578 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:02,578 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:02,578 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:02,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:02,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1247764466, now seen corresponding path program 1 times [2018-11-18 11:41:02,579 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:02,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:02,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:02,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:02,614 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 11:41:02,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:02,614 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:02,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:02,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:02,659 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 11:41:02,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:02,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-18 11:41:02,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:41:02,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:41:02,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:41:02,682 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 4 states. [2018-11-18 11:41:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:02,715 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-11-18 11:41:02,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:41:02,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-18 11:41:02,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:02,716 INFO L225 Difference]: With dead ends: 45 [2018-11-18 11:41:02,717 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 11:41:02,717 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:41:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 11:41:02,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2018-11-18 11:41:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 11:41:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-11-18 11:41:02,722 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 16 [2018-11-18 11:41:02,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:02,722 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-11-18 11:41:02,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:41:02,722 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-11-18 11:41:02,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 11:41:02,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:02,723 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:02,723 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:02,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:02,723 INFO L82 PathProgramCache]: Analyzing trace with hash -805774601, now seen corresponding path program 1 times [2018-11-18 11:41:02,724 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:02,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:02,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:02,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 11:41:02,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:41:02,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:41:02,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:41:02,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:41:02,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:41:02,759 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 3 states. [2018-11-18 11:41:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:02,780 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2018-11-18 11:41:02,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:41:02,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-18 11:41:02,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:02,781 INFO L225 Difference]: With dead ends: 41 [2018-11-18 11:41:02,781 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 11:41:02,781 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:41:02,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 11:41:02,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2018-11-18 11:41:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:41:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-11-18 11:41:02,784 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 18 [2018-11-18 11:41:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:02,784 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-11-18 11:41:02,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:41:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-11-18 11:41:02,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 11:41:02,785 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:02,785 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:02,785 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:02,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:02,785 INFO L82 PathProgramCache]: Analyzing trace with hash -805589903, now seen corresponding path program 1 times [2018-11-18 11:41:02,786 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:02,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:02,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:02,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:02,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:02,804 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:02,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:02,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:02,909 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:02,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-11-18 11:41:02,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 11:41:02,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 11:41:02,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:41:02,910 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2018-11-18 11:41:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:02,935 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2018-11-18 11:41:02,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:41:02,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-11-18 11:41:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:02,936 INFO L225 Difference]: With dead ends: 72 [2018-11-18 11:41:02,936 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 11:41:02,936 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:41:02,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 11:41:02,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2018-11-18 11:41:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 11:41:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2018-11-18 11:41:02,939 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 18 [2018-11-18 11:41:02,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:02,939 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2018-11-18 11:41:02,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 11:41:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2018-11-18 11:41:02,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 11:41:02,940 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:02,940 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:02,940 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:02,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:02,941 INFO L82 PathProgramCache]: Analyzing trace with hash 343411151, now seen corresponding path program 2 times [2018-11-18 11:41:02,941 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:02,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:02,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:02,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:02,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:02,980 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:02,990 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:02,996 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:02,996 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:02,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:03,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:03,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-18 11:41:03,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:41:03,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:41:03,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:41:03,021 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 5 states. [2018-11-18 11:41:03,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:03,044 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-11-18 11:41:03,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:41:03,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-11-18 11:41:03,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:03,045 INFO L225 Difference]: With dead ends: 45 [2018-11-18 11:41:03,045 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 11:41:03,046 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:41:03,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 11:41:03,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-11-18 11:41:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 11:41:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-11-18 11:41:03,050 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 23 [2018-11-18 11:41:03,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:03,050 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-11-18 11:41:03,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:41:03,050 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-11-18 11:41:03,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 11:41:03,051 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:03,051 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:03,051 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:03,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:03,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1374377198, now seen corresponding path program 3 times [2018-11-18 11:41:03,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:03,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:03,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:03,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:03,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:03,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:03,095 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:03,105 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:03,114 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 11:41:03,114 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:03,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:03,133 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:03,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-18 11:41:03,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 11:41:03,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 11:41:03,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:41:03,134 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 6 states. [2018-11-18 11:41:03,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:03,173 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2018-11-18 11:41:03,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:41:03,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-11-18 11:41:03,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:03,174 INFO L225 Difference]: With dead ends: 99 [2018-11-18 11:41:03,174 INFO L226 Difference]: Without dead ends: 97 [2018-11-18 11:41:03,174 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:41:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-18 11:41:03,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2018-11-18 11:41:03,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-11-18 11:41:03,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2018-11-18 11:41:03,182 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 30 [2018-11-18 11:41:03,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:03,182 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2018-11-18 11:41:03,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 11:41:03,183 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2018-11-18 11:41:03,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 11:41:03,183 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:03,183 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:03,184 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:03,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:03,184 INFO L82 PathProgramCache]: Analyzing trace with hash 696391919, now seen corresponding path program 4 times [2018-11-18 11:41:03,184 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:03,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:03,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:03,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:03,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:03,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:03,261 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:03,267 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:03,274 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:03,274 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:03,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:03,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:03,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 11:41:03,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 11:41:03,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 11:41:03,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:41:03,306 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand 7 states. [2018-11-18 11:41:03,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:03,350 INFO L93 Difference]: Finished difference Result 167 states and 197 transitions. [2018-11-18 11:41:03,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:41:03,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2018-11-18 11:41:03,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:03,352 INFO L225 Difference]: With dead ends: 167 [2018-11-18 11:41:03,352 INFO L226 Difference]: Without dead ends: 165 [2018-11-18 11:41:03,353 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:41:03,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-11-18 11:41:03,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 108. [2018-11-18 11:41:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-11-18 11:41:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2018-11-18 11:41:03,362 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 37 [2018-11-18 11:41:03,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:03,362 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2018-11-18 11:41:03,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 11:41:03,362 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2018-11-18 11:41:03,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 11:41:03,363 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:03,363 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:03,364 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:03,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:03,365 INFO L82 PathProgramCache]: Analyzing trace with hash -2112757160, now seen corresponding path program 2 times [2018-11-18 11:41:03,365 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:03,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:03,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:03,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:03,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 11:41:03,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:03,416 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:03,424 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:03,436 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:03,436 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:03,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 11:41:03,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:03,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 11:41:03,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 11:41:03,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 11:41:03,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:41:03,459 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 6 states. [2018-11-18 11:41:03,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:03,491 INFO L93 Difference]: Finished difference Result 205 states and 234 transitions. [2018-11-18 11:41:03,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:41:03,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-11-18 11:41:03,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:03,493 INFO L225 Difference]: With dead ends: 205 [2018-11-18 11:41:03,493 INFO L226 Difference]: Without dead ends: 119 [2018-11-18 11:41:03,494 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:41:03,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-11-18 11:41:03,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2018-11-18 11:41:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-11-18 11:41:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2018-11-18 11:41:03,502 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 39 [2018-11-18 11:41:03,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:03,502 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2018-11-18 11:41:03,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 11:41:03,502 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2018-11-18 11:41:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 11:41:03,503 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:03,503 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:03,503 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:03,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:03,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1956118066, now seen corresponding path program 5 times [2018-11-18 11:41:03,504 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:03,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:03,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:03,505 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:03,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:03,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:03,568 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:03,579 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:03,598 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-18 11:41:03,599 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:03,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:03,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:03,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-18 11:41:03,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:41:03,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:41:03,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:41:03,621 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand 8 states. [2018-11-18 11:41:03,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:03,668 INFO L93 Difference]: Finished difference Result 209 states and 247 transitions. [2018-11-18 11:41:03,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:41:03,669 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2018-11-18 11:41:03,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:03,669 INFO L225 Difference]: With dead ends: 209 [2018-11-18 11:41:03,670 INFO L226 Difference]: Without dead ends: 207 [2018-11-18 11:41:03,670 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:41:03,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-11-18 11:41:03,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 132. [2018-11-18 11:41:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-11-18 11:41:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2018-11-18 11:41:03,677 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 44 [2018-11-18 11:41:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:03,678 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2018-11-18 11:41:03,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:41:03,678 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2018-11-18 11:41:03,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 11:41:03,678 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:03,679 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:03,679 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:03,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:03,679 INFO L82 PathProgramCache]: Analyzing trace with hash 35721079, now seen corresponding path program 3 times [2018-11-18 11:41:03,679 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:03,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:03,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:03,680 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:03,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 11:41:03,720 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:03,720 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:03,726 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:03,736 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 11:41:03,736 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:03,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-18 11:41:03,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:03,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 10 [2018-11-18 11:41:03,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 11:41:03,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 11:41:03,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:41:03,783 INFO L87 Difference]: Start difference. First operand 132 states and 149 transitions. Second operand 10 states. [2018-11-18 11:41:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:03,824 INFO L93 Difference]: Finished difference Result 177 states and 200 transitions. [2018-11-18 11:41:03,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 11:41:03,824 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2018-11-18 11:41:03,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:03,824 INFO L225 Difference]: With dead ends: 177 [2018-11-18 11:41:03,824 INFO L226 Difference]: Without dead ends: 74 [2018-11-18 11:41:03,825 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:41:03,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-11-18 11:41:03,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2018-11-18 11:41:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-18 11:41:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2018-11-18 11:41:03,827 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 46 [2018-11-18 11:41:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:03,828 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2018-11-18 11:41:03,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 11:41:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2018-11-18 11:41:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-18 11:41:03,828 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:03,828 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:03,828 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:03,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:03,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1145884657, now seen corresponding path program 6 times [2018-11-18 11:41:03,829 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:03,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:03,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:03,829 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:03,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:03,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:03,892 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:03,898 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:03,914 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-18 11:41:03,914 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:03,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:03,921 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:03,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:03,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-18 11:41:03,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 11:41:03,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 11:41:03,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:41:03,937 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 9 states. [2018-11-18 11:41:03,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:03,989 INFO L93 Difference]: Finished difference Result 214 states and 258 transitions. [2018-11-18 11:41:03,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:41:03,989 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2018-11-18 11:41:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:03,990 INFO L225 Difference]: With dead ends: 214 [2018-11-18 11:41:03,990 INFO L226 Difference]: Without dead ends: 212 [2018-11-18 11:41:03,991 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:41:03,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-11-18 11:41:03,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 202. [2018-11-18 11:41:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-11-18 11:41:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 228 transitions. [2018-11-18 11:41:03,997 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 228 transitions. Word has length 51 [2018-11-18 11:41:03,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:03,997 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 228 transitions. [2018-11-18 11:41:03,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 11:41:03,998 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 228 transitions. [2018-11-18 11:41:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-18 11:41:03,998 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:03,998 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:03,999 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:03,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:03,999 INFO L82 PathProgramCache]: Analyzing trace with hash -2025544018, now seen corresponding path program 7 times [2018-11-18 11:41:03,999 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:03,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:04,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:04,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:04,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:04,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:04,064 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:04,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:04,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:04,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:04,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-18 11:41:04,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 11:41:04,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 11:41:04,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:41:04,110 INFO L87 Difference]: Start difference. First operand 202 states and 228 transitions. Second operand 10 states. [2018-11-18 11:41:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:04,166 INFO L93 Difference]: Finished difference Result 374 states and 446 transitions. [2018-11-18 11:41:04,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 11:41:04,166 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2018-11-18 11:41:04,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:04,168 INFO L225 Difference]: With dead ends: 374 [2018-11-18 11:41:04,168 INFO L226 Difference]: Without dead ends: 372 [2018-11-18 11:41:04,168 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:41:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-11-18 11:41:04,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 226. [2018-11-18 11:41:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-11-18 11:41:04,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2018-11-18 11:41:04,175 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 58 [2018-11-18 11:41:04,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:04,175 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2018-11-18 11:41:04,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 11:41:04,175 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2018-11-18 11:41:04,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-18 11:41:04,176 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:04,176 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:04,176 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:04,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:04,176 INFO L82 PathProgramCache]: Analyzing trace with hash 371019567, now seen corresponding path program 8 times [2018-11-18 11:41:04,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:04,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:04,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:04,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:04,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:04,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:04,250 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:04,263 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:04,272 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:04,272 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:04,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:04,284 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:04,308 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:04,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-18 11:41:04,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 11:41:04,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 11:41:04,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:41:04,309 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand 11 states. [2018-11-18 11:41:04,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:04,364 INFO L93 Difference]: Finished difference Result 423 states and 506 transitions. [2018-11-18 11:41:04,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 11:41:04,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2018-11-18 11:41:04,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:04,366 INFO L225 Difference]: With dead ends: 423 [2018-11-18 11:41:04,366 INFO L226 Difference]: Without dead ends: 421 [2018-11-18 11:41:04,367 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:41:04,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-11-18 11:41:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 250. [2018-11-18 11:41:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-11-18 11:41:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 284 transitions. [2018-11-18 11:41:04,374 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 284 transitions. Word has length 65 [2018-11-18 11:41:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:04,374 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 284 transitions. [2018-11-18 11:41:04,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 11:41:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 284 transitions. [2018-11-18 11:41:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-18 11:41:04,375 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:04,375 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:04,376 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:04,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:04,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2106211474, now seen corresponding path program 4 times [2018-11-18 11:41:04,376 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:04,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:04,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:04,377 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:04,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 111 proven. 67 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-18 11:41:04,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:04,420 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/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 11:41:04,427 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:04,441 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:04,441 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:04,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 72 proven. 123 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-18 11:41:04,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:04,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2018-11-18 11:41:04,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 11:41:04,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 11:41:04,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-18 11:41:04,528 INFO L87 Difference]: Start difference. First operand 250 states and 284 transitions. Second operand 15 states. [2018-11-18 11:41:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:04,577 INFO L93 Difference]: Finished difference Result 597 states and 698 transitions. [2018-11-18 11:41:04,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 11:41:04,577 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2018-11-18 11:41:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:04,579 INFO L225 Difference]: With dead ends: 597 [2018-11-18 11:41:04,579 INFO L226 Difference]: Without dead ends: 390 [2018-11-18 11:41:04,579 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-18 11:41:04,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-11-18 11:41:04,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 381. [2018-11-18 11:41:04,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-11-18 11:41:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 433 transitions. [2018-11-18 11:41:04,588 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 433 transitions. Word has length 67 [2018-11-18 11:41:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:04,588 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 433 transitions. [2018-11-18 11:41:04,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 11:41:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 433 transitions. [2018-11-18 11:41:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-18 11:41:04,589 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:04,589 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:04,589 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:04,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:04,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1037089906, now seen corresponding path program 9 times [2018-11-18 11:41:04,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:04,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:04,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:04,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:04,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:04,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:04,653 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:04,661 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:04,673 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-18 11:41:04,673 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:04,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:04,700 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:04,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-18 11:41:04,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 11:41:04,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 11:41:04,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 11:41:04,701 INFO L87 Difference]: Start difference. First operand 381 states and 433 transitions. Second operand 12 states. [2018-11-18 11:41:04,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:04,763 INFO L93 Difference]: Finished difference Result 729 states and 877 transitions. [2018-11-18 11:41:04,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 11:41:04,763 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2018-11-18 11:41:04,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:04,765 INFO L225 Difference]: With dead ends: 729 [2018-11-18 11:41:04,765 INFO L226 Difference]: Without dead ends: 727 [2018-11-18 11:41:04,766 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 11:41:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2018-11-18 11:41:04,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 426. [2018-11-18 11:41:04,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2018-11-18 11:41:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 485 transitions. [2018-11-18 11:41:04,777 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 485 transitions. Word has length 72 [2018-11-18 11:41:04,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:04,777 INFO L480 AbstractCegarLoop]: Abstraction has 426 states and 485 transitions. [2018-11-18 11:41:04,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 11:41:04,777 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 485 transitions. [2018-11-18 11:41:04,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-18 11:41:04,778 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:04,778 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:04,778 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:04,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:04,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1135446449, now seen corresponding path program 10 times [2018-11-18 11:41:04,779 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:04,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:04,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:04,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:04,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:04,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:04,855 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:04,862 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:04,877 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:04,877 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:04,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:04,914 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:04,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-18 11:41:04,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 11:41:04,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 11:41:04,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-18 11:41:04,915 INFO L87 Difference]: Start difference. First operand 426 states and 485 transitions. Second operand 13 states. [2018-11-18 11:41:04,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:04,990 INFO L93 Difference]: Finished difference Result 820 states and 988 transitions. [2018-11-18 11:41:04,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 11:41:04,991 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 79 [2018-11-18 11:41:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:04,992 INFO L225 Difference]: With dead ends: 820 [2018-11-18 11:41:04,992 INFO L226 Difference]: Without dead ends: 818 [2018-11-18 11:41:04,993 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-18 11:41:04,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2018-11-18 11:41:05,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 471. [2018-11-18 11:41:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2018-11-18 11:41:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 537 transitions. [2018-11-18 11:41:05,003 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 537 transitions. Word has length 79 [2018-11-18 11:41:05,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:05,003 INFO L480 AbstractCegarLoop]: Abstraction has 471 states and 537 transitions. [2018-11-18 11:41:05,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 11:41:05,003 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 537 transitions. [2018-11-18 11:41:05,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-18 11:41:05,004 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:05,004 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:05,004 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:05,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:05,005 INFO L82 PathProgramCache]: Analyzing trace with hash -262809490, now seen corresponding path program 11 times [2018-11-18 11:41:05,005 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:05,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:05,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:05,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:05,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:05,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:05,087 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:05,098 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:05,127 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-18 11:41:05,127 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:05,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:05,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:05,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-18 11:41:05,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 11:41:05,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 11:41:05,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-18 11:41:05,166 INFO L87 Difference]: Start difference. First operand 471 states and 537 transitions. Second operand 14 states. [2018-11-18 11:41:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:05,258 INFO L93 Difference]: Finished difference Result 911 states and 1099 transitions. [2018-11-18 11:41:05,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 11:41:05,259 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2018-11-18 11:41:05,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:05,261 INFO L225 Difference]: With dead ends: 911 [2018-11-18 11:41:05,261 INFO L226 Difference]: Without dead ends: 909 [2018-11-18 11:41:05,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-18 11:41:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2018-11-18 11:41:05,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 516. [2018-11-18 11:41:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2018-11-18 11:41:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 589 transitions. [2018-11-18 11:41:05,275 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 589 transitions. Word has length 86 [2018-11-18 11:41:05,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:05,275 INFO L480 AbstractCegarLoop]: Abstraction has 516 states and 589 transitions. [2018-11-18 11:41:05,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 11:41:05,276 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 589 transitions. [2018-11-18 11:41:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-18 11:41:05,276 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:05,277 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:05,277 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:05,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:05,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1973115537, now seen corresponding path program 12 times [2018-11-18 11:41:05,277 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:05,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:05,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:05,278 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:05,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:05,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:05,377 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:05,383 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:05,398 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-18 11:41:05,398 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:05,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:05,425 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:05,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-18 11:41:05,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 11:41:05,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 11:41:05,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-18 11:41:05,426 INFO L87 Difference]: Start difference. First operand 516 states and 589 transitions. Second operand 15 states. [2018-11-18 11:41:05,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:05,523 INFO L93 Difference]: Finished difference Result 1002 states and 1210 transitions. [2018-11-18 11:41:05,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 11:41:05,524 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 93 [2018-11-18 11:41:05,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:05,527 INFO L225 Difference]: With dead ends: 1002 [2018-11-18 11:41:05,528 INFO L226 Difference]: Without dead ends: 1000 [2018-11-18 11:41:05,529 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-18 11:41:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2018-11-18 11:41:05,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 561. [2018-11-18 11:41:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2018-11-18 11:41:05,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 641 transitions. [2018-11-18 11:41:05,549 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 641 transitions. Word has length 93 [2018-11-18 11:41:05,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:05,550 INFO L480 AbstractCegarLoop]: Abstraction has 561 states and 641 transitions. [2018-11-18 11:41:05,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 11:41:05,551 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 641 transitions. [2018-11-18 11:41:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-18 11:41:05,551 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:05,552 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:05,552 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:05,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:05,552 INFO L82 PathProgramCache]: Analyzing trace with hash -580491954, now seen corresponding path program 13 times [2018-11-18 11:41:05,552 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:05,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:05,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:05,554 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:05,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:05,669 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:05,669 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:05,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:05,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:05,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:05,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-18 11:41:05,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 11:41:05,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 11:41:05,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-18 11:41:05,734 INFO L87 Difference]: Start difference. First operand 561 states and 641 transitions. Second operand 16 states. [2018-11-18 11:41:05,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:05,830 INFO L93 Difference]: Finished difference Result 1093 states and 1321 transitions. [2018-11-18 11:41:05,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 11:41:05,831 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2018-11-18 11:41:05,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:05,834 INFO L225 Difference]: With dead ends: 1093 [2018-11-18 11:41:05,834 INFO L226 Difference]: Without dead ends: 1091 [2018-11-18 11:41:05,835 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-18 11:41:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2018-11-18 11:41:05,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 606. [2018-11-18 11:41:05,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2018-11-18 11:41:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 693 transitions. [2018-11-18 11:41:05,855 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 693 transitions. Word has length 100 [2018-11-18 11:41:05,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:05,855 INFO L480 AbstractCegarLoop]: Abstraction has 606 states and 693 transitions. [2018-11-18 11:41:05,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 11:41:05,855 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 693 transitions. [2018-11-18 11:41:05,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-18 11:41:05,858 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:05,858 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 8, 8, 8, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:05,858 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:05,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:05,858 INFO L82 PathProgramCache]: Analyzing trace with hash 2076289143, now seen corresponding path program 5 times [2018-11-18 11:41:05,858 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:05,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:05,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:05,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:05,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 223 proven. 220 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-18 11:41:05,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:05,918 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:05,931 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:05,950 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2018-11-18 11:41:05,950 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:05,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 223 proven. 220 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-18 11:41:05,988 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:05,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-18 11:41:05,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 11:41:05,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 11:41:05,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:41:05,989 INFO L87 Difference]: Start difference. First operand 606 states and 693 transitions. Second operand 11 states. [2018-11-18 11:41:06,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:06,035 INFO L93 Difference]: Finished difference Result 1166 states and 1341 transitions. [2018-11-18 11:41:06,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 11:41:06,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2018-11-18 11:41:06,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:06,037 INFO L225 Difference]: With dead ends: 1166 [2018-11-18 11:41:06,038 INFO L226 Difference]: Without dead ends: 617 [2018-11-18 11:41:06,039 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:41:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2018-11-18 11:41:06,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 613. [2018-11-18 11:41:06,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2018-11-18 11:41:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 700 transitions. [2018-11-18 11:41:06,055 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 700 transitions. Word has length 102 [2018-11-18 11:41:06,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:06,056 INFO L480 AbstractCegarLoop]: Abstraction has 613 states and 700 transitions. [2018-11-18 11:41:06,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 11:41:06,056 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 700 transitions. [2018-11-18 11:41:06,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-18 11:41:06,059 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:06,059 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:06,059 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:06,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:06,059 INFO L82 PathProgramCache]: Analyzing trace with hash -723133297, now seen corresponding path program 14 times [2018-11-18 11:41:06,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:06,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:06,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:06,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:06,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:06,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:06,177 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:06,187 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:06,203 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:06,203 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:06,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:06,243 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:06,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-11-18 11:41:06,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 11:41:06,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 11:41:06,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-11-18 11:41:06,244 INFO L87 Difference]: Start difference. First operand 613 states and 700 transitions. Second operand 17 states. [2018-11-18 11:41:06,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:06,368 INFO L93 Difference]: Finished difference Result 1191 states and 1439 transitions. [2018-11-18 11:41:06,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 11:41:06,369 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2018-11-18 11:41:06,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:06,371 INFO L225 Difference]: With dead ends: 1191 [2018-11-18 11:41:06,371 INFO L226 Difference]: Without dead ends: 1189 [2018-11-18 11:41:06,372 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-11-18 11:41:06,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2018-11-18 11:41:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 658. [2018-11-18 11:41:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2018-11-18 11:41:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 752 transitions. [2018-11-18 11:41:06,385 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 752 transitions. Word has length 107 [2018-11-18 11:41:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:06,386 INFO L480 AbstractCegarLoop]: Abstraction has 658 states and 752 transitions. [2018-11-18 11:41:06,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 11:41:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 752 transitions. [2018-11-18 11:41:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-18 11:41:06,387 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:06,387 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 9, 9, 9, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:06,387 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:06,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:06,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1858055304, now seen corresponding path program 6 times [2018-11-18 11:41:06,387 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:06,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:06,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:06,388 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:06,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 249 proven. 279 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-18 11:41:06,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:06,453 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:06,460 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:06,502 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2018-11-18 11:41:06,502 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:06,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 282 proven. 111 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-18 11:41:06,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:06,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 19 [2018-11-18 11:41:06,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 11:41:06,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 11:41:06,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-18 11:41:06,612 INFO L87 Difference]: Start difference. First operand 658 states and 752 transitions. Second operand 19 states. [2018-11-18 11:41:06,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:06,706 INFO L93 Difference]: Finished difference Result 1348 states and 1552 transitions. [2018-11-18 11:41:06,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-18 11:41:06,712 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 109 [2018-11-18 11:41:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:06,714 INFO L225 Difference]: With dead ends: 1348 [2018-11-18 11:41:06,714 INFO L226 Difference]: Without dead ends: 754 [2018-11-18 11:41:06,715 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-18 11:41:06,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-11-18 11:41:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 739. [2018-11-18 11:41:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2018-11-18 11:41:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 843 transitions. [2018-11-18 11:41:06,727 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 843 transitions. Word has length 109 [2018-11-18 11:41:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:06,727 INFO L480 AbstractCegarLoop]: Abstraction has 739 states and 843 transitions. [2018-11-18 11:41:06,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 11:41:06,727 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 843 transitions. [2018-11-18 11:41:06,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-18 11:41:06,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:06,728 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:06,728 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:06,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:06,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1284434478, now seen corresponding path program 15 times [2018-11-18 11:41:06,729 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:06,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:06,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:06,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:06,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:06,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:06,841 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:06,848 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:06,887 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-18 11:41:06,887 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:06,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:06,914 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:06,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-18 11:41:06,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 11:41:06,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 11:41:06,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-18 11:41:06,915 INFO L87 Difference]: Start difference. First operand 739 states and 843 transitions. Second operand 18 states. [2018-11-18 11:41:07,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:07,023 INFO L93 Difference]: Finished difference Result 1433 states and 1731 transitions. [2018-11-18 11:41:07,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-18 11:41:07,023 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 114 [2018-11-18 11:41:07,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:07,026 INFO L225 Difference]: With dead ends: 1433 [2018-11-18 11:41:07,026 INFO L226 Difference]: Without dead ends: 1431 [2018-11-18 11:41:07,027 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-18 11:41:07,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2018-11-18 11:41:07,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 791. [2018-11-18 11:41:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2018-11-18 11:41:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 903 transitions. [2018-11-18 11:41:07,040 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 903 transitions. Word has length 114 [2018-11-18 11:41:07,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:07,040 INFO L480 AbstractCegarLoop]: Abstraction has 791 states and 903 transitions. [2018-11-18 11:41:07,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 11:41:07,040 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 903 transitions. [2018-11-18 11:41:07,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-18 11:41:07,041 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:07,041 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:07,042 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:07,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:07,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1998054481, now seen corresponding path program 16 times [2018-11-18 11:41:07,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:07,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:07,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:07,043 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:07,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:07,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:07,162 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:07,170 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:07,184 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:07,184 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:07,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:07,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:07,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-18 11:41:07,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 11:41:07,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 11:41:07,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-18 11:41:07,213 INFO L87 Difference]: Start difference. First operand 791 states and 903 transitions. Second operand 19 states. [2018-11-18 11:41:07,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:07,326 INFO L93 Difference]: Finished difference Result 1538 states and 1859 transitions. [2018-11-18 11:41:07,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-18 11:41:07,327 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 121 [2018-11-18 11:41:07,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:07,329 INFO L225 Difference]: With dead ends: 1538 [2018-11-18 11:41:07,329 INFO L226 Difference]: Without dead ends: 1536 [2018-11-18 11:41:07,330 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-18 11:41:07,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2018-11-18 11:41:07,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 843. [2018-11-18 11:41:07,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2018-11-18 11:41:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 963 transitions. [2018-11-18 11:41:07,343 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 963 transitions. Word has length 121 [2018-11-18 11:41:07,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:07,344 INFO L480 AbstractCegarLoop]: Abstraction has 843 states and 963 transitions. [2018-11-18 11:41:07,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 11:41:07,344 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 963 transitions. [2018-11-18 11:41:07,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-18 11:41:07,345 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:07,345 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:07,345 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:07,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:07,346 INFO L82 PathProgramCache]: Analyzing trace with hash -662870258, now seen corresponding path program 17 times [2018-11-18 11:41:07,346 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:07,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:07,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:07,346 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:07,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:07,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:07,490 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:07,497 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:07,513 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-18 11:41:07,514 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:07,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:07,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:07,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-18 11:41:07,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 11:41:07,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 11:41:07,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-18 11:41:07,543 INFO L87 Difference]: Start difference. First operand 843 states and 963 transitions. Second operand 20 states. [2018-11-18 11:41:07,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:07,636 INFO L93 Difference]: Finished difference Result 1643 states and 1987 transitions. [2018-11-18 11:41:07,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-18 11:41:07,637 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2018-11-18 11:41:07,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:07,641 INFO L225 Difference]: With dead ends: 1643 [2018-11-18 11:41:07,641 INFO L226 Difference]: Without dead ends: 1641 [2018-11-18 11:41:07,642 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-18 11:41:07,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2018-11-18 11:41:07,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 895. [2018-11-18 11:41:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2018-11-18 11:41:07,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1023 transitions. [2018-11-18 11:41:07,665 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1023 transitions. Word has length 128 [2018-11-18 11:41:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:07,665 INFO L480 AbstractCegarLoop]: Abstraction has 895 states and 1023 transitions. [2018-11-18 11:41:07,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 11:41:07,665 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1023 transitions. [2018-11-18 11:41:07,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-18 11:41:07,666 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:07,666 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 11, 11, 11, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:07,667 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:07,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:07,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1757703375, now seen corresponding path program 7 times [2018-11-18 11:41:07,667 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:07,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:07,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:07,668 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:07,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 359 proven. 418 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-18 11:41:07,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:07,821 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:07,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:07,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 359 proven. 418 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-18 11:41:07,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:07,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-18 11:41:07,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 11:41:07,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 11:41:07,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-18 11:41:07,894 INFO L87 Difference]: Start difference. First operand 895 states and 1023 transitions. Second operand 14 states. [2018-11-18 11:41:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:07,981 INFO L93 Difference]: Finished difference Result 1723 states and 1980 transitions. [2018-11-18 11:41:07,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 11:41:07,982 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2018-11-18 11:41:07,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:07,984 INFO L225 Difference]: With dead ends: 1723 [2018-11-18 11:41:07,984 INFO L226 Difference]: Without dead ends: 906 [2018-11-18 11:41:07,985 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-18 11:41:07,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2018-11-18 11:41:08,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 902. [2018-11-18 11:41:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2018-11-18 11:41:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1030 transitions. [2018-11-18 11:41:08,002 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1030 transitions. Word has length 130 [2018-11-18 11:41:08,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:08,002 INFO L480 AbstractCegarLoop]: Abstraction has 902 states and 1030 transitions. [2018-11-18 11:41:08,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 11:41:08,002 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1030 transitions. [2018-11-18 11:41:08,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-18 11:41:08,003 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:08,003 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:08,003 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:08,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:08,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1274897103, now seen corresponding path program 18 times [2018-11-18 11:41:08,004 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:08,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:08,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:08,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:08,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:08,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:08,181 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:08,190 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:08,228 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-18 11:41:08,228 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:08,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:08,275 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:08,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-11-18 11:41:08,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-18 11:41:08,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-18 11:41:08,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-11-18 11:41:08,276 INFO L87 Difference]: Start difference. First operand 902 states and 1030 transitions. Second operand 21 states. [2018-11-18 11:41:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:08,497 INFO L93 Difference]: Finished difference Result 1755 states and 2122 transitions. [2018-11-18 11:41:08,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-18 11:41:08,498 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 135 [2018-11-18 11:41:08,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:08,503 INFO L225 Difference]: With dead ends: 1755 [2018-11-18 11:41:08,503 INFO L226 Difference]: Without dead ends: 1753 [2018-11-18 11:41:08,504 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-11-18 11:41:08,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2018-11-18 11:41:08,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 954. [2018-11-18 11:41:08,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2018-11-18 11:41:08,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1090 transitions. [2018-11-18 11:41:08,528 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1090 transitions. Word has length 135 [2018-11-18 11:41:08,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:08,528 INFO L480 AbstractCegarLoop]: Abstraction has 954 states and 1090 transitions. [2018-11-18 11:41:08,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-18 11:41:08,528 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1090 transitions. [2018-11-18 11:41:08,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-18 11:41:08,529 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:08,529 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 12, 12, 12, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:08,530 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:08,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:08,530 INFO L82 PathProgramCache]: Analyzing trace with hash 715891378, now seen corresponding path program 8 times [2018-11-18 11:41:08,530 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:08,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:08,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:08,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:08,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 390 proven. 498 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-18 11:41:08,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:08,651 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:08,660 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:08,681 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:08,681 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:08,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 390 proven. 498 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-18 11:41:08,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:08,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-18 11:41:08,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 11:41:08,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 11:41:08,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-18 11:41:08,722 INFO L87 Difference]: Start difference. First operand 954 states and 1090 transitions. Second operand 15 states. [2018-11-18 11:41:08,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:08,772 INFO L93 Difference]: Finished difference Result 1834 states and 2107 transitions. [2018-11-18 11:41:08,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 11:41:08,774 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 137 [2018-11-18 11:41:08,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:08,776 INFO L225 Difference]: With dead ends: 1834 [2018-11-18 11:41:08,776 INFO L226 Difference]: Without dead ends: 965 [2018-11-18 11:41:08,777 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-18 11:41:08,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2018-11-18 11:41:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 961. [2018-11-18 11:41:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2018-11-18 11:41:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1097 transitions. [2018-11-18 11:41:08,790 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1097 transitions. Word has length 137 [2018-11-18 11:41:08,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:08,790 INFO L480 AbstractCegarLoop]: Abstraction has 961 states and 1097 transitions. [2018-11-18 11:41:08,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 11:41:08,790 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1097 transitions. [2018-11-18 11:41:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-18 11:41:08,791 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:08,791 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:08,791 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:08,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:08,792 INFO L82 PathProgramCache]: Analyzing trace with hash -748692498, now seen corresponding path program 19 times [2018-11-18 11:41:08,792 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:08,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:08,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:08,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:08,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:09,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:09,056 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:09,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:09,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:09,125 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:09,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-11-18 11:41:09,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-18 11:41:09,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-18 11:41:09,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-18 11:41:09,126 INFO L87 Difference]: Start difference. First operand 961 states and 1097 transitions. Second operand 22 states. [2018-11-18 11:41:09,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:09,248 INFO L93 Difference]: Finished difference Result 1867 states and 2257 transitions. [2018-11-18 11:41:09,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-18 11:41:09,248 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2018-11-18 11:41:09,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:09,252 INFO L225 Difference]: With dead ends: 1867 [2018-11-18 11:41:09,252 INFO L226 Difference]: Without dead ends: 1865 [2018-11-18 11:41:09,252 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-18 11:41:09,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2018-11-18 11:41:09,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1013. [2018-11-18 11:41:09,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2018-11-18 11:41:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1157 transitions. [2018-11-18 11:41:09,274 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1157 transitions. Word has length 142 [2018-11-18 11:41:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:09,274 INFO L480 AbstractCegarLoop]: Abstraction has 1013 states and 1157 transitions. [2018-11-18 11:41:09,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-18 11:41:09,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1157 transitions. [2018-11-18 11:41:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-18 11:41:09,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:09,275 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 13, 13, 13, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:09,275 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:09,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:09,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1666469905, now seen corresponding path program 9 times [2018-11-18 11:41:09,276 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:09,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:09,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:09,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:09,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 421 proven. 585 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-18 11:41:09,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:09,392 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:09,397 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:09,410 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-11-18 11:41:09,410 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:09,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 519 proven. 192 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2018-11-18 11:41:09,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:09,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 25 [2018-11-18 11:41:09,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-18 11:41:09,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-18 11:41:09,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-11-18 11:41:09,516 INFO L87 Difference]: Start difference. First operand 1013 states and 1157 transitions. Second operand 25 states. [2018-11-18 11:41:09,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:09,588 INFO L93 Difference]: Finished difference Result 2151 states and 2487 transitions. [2018-11-18 11:41:09,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-18 11:41:09,588 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 144 [2018-11-18 11:41:09,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:09,591 INFO L225 Difference]: With dead ends: 2151 [2018-11-18 11:41:09,591 INFO L226 Difference]: Without dead ends: 1230 [2018-11-18 11:41:09,592 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-11-18 11:41:09,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2018-11-18 11:41:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1210. [2018-11-18 11:41:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2018-11-18 11:41:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1381 transitions. [2018-11-18 11:41:09,606 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1381 transitions. Word has length 144 [2018-11-18 11:41:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:09,607 INFO L480 AbstractCegarLoop]: Abstraction has 1210 states and 1381 transitions. [2018-11-18 11:41:09,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-18 11:41:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1381 transitions. [2018-11-18 11:41:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-18 11:41:09,608 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:09,608 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:09,608 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:09,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:09,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1674071569, now seen corresponding path program 20 times [2018-11-18 11:41:09,608 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:09,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:09,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:09,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:09,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:09,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:09,781 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:09,789 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:09,810 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:09,811 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:09,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:09,844 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:09,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-11-18 11:41:09,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-18 11:41:09,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-18 11:41:09,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-11-18 11:41:09,845 INFO L87 Difference]: Start difference. First operand 1210 states and 1381 transitions. Second operand 23 states. [2018-11-18 11:41:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:09,961 INFO L93 Difference]: Finished difference Result 2358 states and 2852 transitions. [2018-11-18 11:41:09,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-18 11:41:09,961 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 149 [2018-11-18 11:41:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:09,966 INFO L225 Difference]: With dead ends: 2358 [2018-11-18 11:41:09,966 INFO L226 Difference]: Without dead ends: 2356 [2018-11-18 11:41:09,967 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-11-18 11:41:09,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2018-11-18 11:41:09,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1276. [2018-11-18 11:41:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2018-11-18 11:41:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1457 transitions. [2018-11-18 11:41:09,990 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1457 transitions. Word has length 149 [2018-11-18 11:41:09,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:09,991 INFO L480 AbstractCegarLoop]: Abstraction has 1276 states and 1457 transitions. [2018-11-18 11:41:09,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-18 11:41:09,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1457 transitions. [2018-11-18 11:41:09,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-18 11:41:09,992 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:09,992 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:09,992 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:09,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:09,992 INFO L82 PathProgramCache]: Analyzing trace with hash 652495054, now seen corresponding path program 21 times [2018-11-18 11:41:09,993 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:09,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:09,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:09,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:09,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:10,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:10,228 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:10,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:10,269 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-11-18 11:41:10,269 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:10,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:10,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:10,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-11-18 11:41:10,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-18 11:41:10,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-18 11:41:10,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-18 11:41:10,315 INFO L87 Difference]: Start difference. First operand 1276 states and 1457 transitions. Second operand 24 states. [2018-11-18 11:41:10,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:10,448 INFO L93 Difference]: Finished difference Result 2491 states and 3014 transitions. [2018-11-18 11:41:10,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-18 11:41:10,449 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 156 [2018-11-18 11:41:10,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:10,454 INFO L225 Difference]: With dead ends: 2491 [2018-11-18 11:41:10,454 INFO L226 Difference]: Without dead ends: 2489 [2018-11-18 11:41:10,455 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-18 11:41:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2018-11-18 11:41:10,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 1342. [2018-11-18 11:41:10,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2018-11-18 11:41:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1533 transitions. [2018-11-18 11:41:10,483 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1533 transitions. Word has length 156 [2018-11-18 11:41:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:10,484 INFO L480 AbstractCegarLoop]: Abstraction has 1342 states and 1533 transitions. [2018-11-18 11:41:10,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-18 11:41:10,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1533 transitions. [2018-11-18 11:41:10,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-11-18 11:41:10,485 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:10,485 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:10,485 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:10,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:10,486 INFO L82 PathProgramCache]: Analyzing trace with hash -265746161, now seen corresponding path program 22 times [2018-11-18 11:41:10,486 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:10,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:10,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:10,486 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:10,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:10,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:10,757 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:10,763 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:10,782 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:10,782 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:10,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:10,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:10,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-11-18 11:41:10,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-18 11:41:10,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-18 11:41:10,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-11-18 11:41:10,820 INFO L87 Difference]: Start difference. First operand 1342 states and 1533 transitions. Second operand 25 states. [2018-11-18 11:41:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:10,963 INFO L93 Difference]: Finished difference Result 2624 states and 3176 transitions. [2018-11-18 11:41:10,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-18 11:41:10,963 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 163 [2018-11-18 11:41:10,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:10,967 INFO L225 Difference]: With dead ends: 2624 [2018-11-18 11:41:10,967 INFO L226 Difference]: Without dead ends: 2622 [2018-11-18 11:41:10,968 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-11-18 11:41:10,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2018-11-18 11:41:10,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1408. [2018-11-18 11:41:10,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1408 states. [2018-11-18 11:41:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1609 transitions. [2018-11-18 11:41:10,989 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1609 transitions. Word has length 163 [2018-11-18 11:41:10,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:10,990 INFO L480 AbstractCegarLoop]: Abstraction has 1408 states and 1609 transitions. [2018-11-18 11:41:10,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-18 11:41:10,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1609 transitions. [2018-11-18 11:41:10,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-18 11:41:10,991 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:10,991 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:10,992 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:10,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:10,992 INFO L82 PathProgramCache]: Analyzing trace with hash 876129710, now seen corresponding path program 23 times [2018-11-18 11:41:10,992 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:10,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:10,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:10,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:10,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:11,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:11,245 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:11,253 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:11,303 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-11-18 11:41:11,304 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:11,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:11,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:11,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-11-18 11:41:11,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-18 11:41:11,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-18 11:41:11,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-11-18 11:41:11,340 INFO L87 Difference]: Start difference. First operand 1408 states and 1609 transitions. Second operand 26 states. [2018-11-18 11:41:11,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:11,461 INFO L93 Difference]: Finished difference Result 2757 states and 3338 transitions. [2018-11-18 11:41:11,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-18 11:41:11,461 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 170 [2018-11-18 11:41:11,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:11,467 INFO L225 Difference]: With dead ends: 2757 [2018-11-18 11:41:11,467 INFO L226 Difference]: Without dead ends: 2755 [2018-11-18 11:41:11,468 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-11-18 11:41:11,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2018-11-18 11:41:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 1474. [2018-11-18 11:41:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-18 11:41:11,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1685 transitions. [2018-11-18 11:41:11,496 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1685 transitions. Word has length 170 [2018-11-18 11:41:11,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:11,496 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 1685 transitions. [2018-11-18 11:41:11,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-18 11:41:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1685 transitions. [2018-11-18 11:41:11,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-18 11:41:11,498 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:11,498 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 15, 15, 15, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:11,499 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:11,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:11,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1092729071, now seen corresponding path program 10 times [2018-11-18 11:41:11,499 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:11,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:11,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:11,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:11,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 639 proven. 780 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-18 11:41:11,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:11,665 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:11,672 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:11,687 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:11,687 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:11,689 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 639 proven. 780 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-18 11:41:11,727 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:11,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-18 11:41:11,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 11:41:11,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 11:41:11,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-18 11:41:11,728 INFO L87 Difference]: Start difference. First operand 1474 states and 1685 transitions. Second operand 18 states. [2018-11-18 11:41:11,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:11,781 INFO L93 Difference]: Finished difference Result 2853 states and 3276 transitions. [2018-11-18 11:41:11,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-18 11:41:11,782 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2018-11-18 11:41:11,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:11,784 INFO L225 Difference]: With dead ends: 2853 [2018-11-18 11:41:11,784 INFO L226 Difference]: Without dead ends: 1485 [2018-11-18 11:41:11,786 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-18 11:41:11,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2018-11-18 11:41:11,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1481. [2018-11-18 11:41:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2018-11-18 11:41:11,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1692 transitions. [2018-11-18 11:41:11,803 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1692 transitions. Word has length 172 [2018-11-18 11:41:11,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:11,804 INFO L480 AbstractCegarLoop]: Abstraction has 1481 states and 1692 transitions. [2018-11-18 11:41:11,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 11:41:11,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1692 transitions. [2018-11-18 11:41:11,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-18 11:41:11,805 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:11,805 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:11,806 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:11,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:11,806 INFO L82 PathProgramCache]: Analyzing trace with hash -689739729, now seen corresponding path program 24 times [2018-11-18 11:41:11,806 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:11,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:11,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:11,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:11,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:12,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:12,036 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:12,043 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:12,074 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-11-18 11:41:12,074 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:12,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:12,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:12,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-11-18 11:41:12,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-18 11:41:12,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-18 11:41:12,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-11-18 11:41:12,132 INFO L87 Difference]: Start difference. First operand 1481 states and 1692 transitions. Second operand 27 states. [2018-11-18 11:41:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:12,258 INFO L93 Difference]: Finished difference Result 2897 states and 3507 transitions. [2018-11-18 11:41:12,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-18 11:41:12,259 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 177 [2018-11-18 11:41:12,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:12,262 INFO L225 Difference]: With dead ends: 2897 [2018-11-18 11:41:12,262 INFO L226 Difference]: Without dead ends: 2895 [2018-11-18 11:41:12,263 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-11-18 11:41:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2018-11-18 11:41:12,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1547. [2018-11-18 11:41:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1547 states. [2018-11-18 11:41:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 1768 transitions. [2018-11-18 11:41:12,283 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 1768 transitions. Word has length 177 [2018-11-18 11:41:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:12,283 INFO L480 AbstractCegarLoop]: Abstraction has 1547 states and 1768 transitions. [2018-11-18 11:41:12,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-18 11:41:12,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 1768 transitions. [2018-11-18 11:41:12,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-18 11:41:12,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:12,285 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 16, 16, 16, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:12,285 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:12,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:12,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1640260946, now seen corresponding path program 11 times [2018-11-18 11:41:12,285 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:12,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:12,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:12,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:12,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 680 proven. 888 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-18 11:41:12,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:12,409 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:12,416 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:12,440 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-11-18 11:41:12,440 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:12,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:12,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 680 proven. 888 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-18 11:41:12,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:12,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-18 11:41:12,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 11:41:12,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 11:41:12,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-18 11:41:12,478 INFO L87 Difference]: Start difference. First operand 1547 states and 1768 transitions. Second operand 19 states. [2018-11-18 11:41:12,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:12,529 INFO L93 Difference]: Finished difference Result 2992 states and 3435 transitions. [2018-11-18 11:41:12,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-18 11:41:12,530 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 179 [2018-11-18 11:41:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:12,532 INFO L225 Difference]: With dead ends: 2992 [2018-11-18 11:41:12,532 INFO L226 Difference]: Without dead ends: 1558 [2018-11-18 11:41:12,534 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-18 11:41:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2018-11-18 11:41:12,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1554. [2018-11-18 11:41:12,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2018-11-18 11:41:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1775 transitions. [2018-11-18 11:41:12,548 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1775 transitions. Word has length 179 [2018-11-18 11:41:12,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:12,548 INFO L480 AbstractCegarLoop]: Abstraction has 1554 states and 1775 transitions. [2018-11-18 11:41:12,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 11:41:12,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1775 transitions. [2018-11-18 11:41:12,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-11-18 11:41:12,550 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:12,550 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:12,550 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:12,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:12,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1274344818, now seen corresponding path program 25 times [2018-11-18 11:41:12,550 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:12,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:12,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:12,551 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:12,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:12,802 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:12,803 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:12,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:12,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:12,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:12,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-18 11:41:12,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-18 11:41:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-18 11:41:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-11-18 11:41:12,874 INFO L87 Difference]: Start difference. First operand 1554 states and 1775 transitions. Second operand 28 states. [2018-11-18 11:41:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:13,021 INFO L93 Difference]: Finished difference Result 3037 states and 3676 transitions. [2018-11-18 11:41:13,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-18 11:41:13,021 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 184 [2018-11-18 11:41:13,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:13,025 INFO L225 Difference]: With dead ends: 3037 [2018-11-18 11:41:13,025 INFO L226 Difference]: Without dead ends: 3035 [2018-11-18 11:41:13,026 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-11-18 11:41:13,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2018-11-18 11:41:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 1620. [2018-11-18 11:41:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1620 states. [2018-11-18 11:41:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 1851 transitions. [2018-11-18 11:41:13,047 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 1851 transitions. Word has length 184 [2018-11-18 11:41:13,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:13,048 INFO L480 AbstractCegarLoop]: Abstraction has 1620 states and 1851 transitions. [2018-11-18 11:41:13,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-18 11:41:13,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 1851 transitions. [2018-11-18 11:41:13,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-11-18 11:41:13,049 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:13,049 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 17, 17, 17, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:13,050 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:13,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:13,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1819481103, now seen corresponding path program 12 times [2018-11-18 11:41:13,050 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:13,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:13,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:13,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:13,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 721 proven. 1003 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-18 11:41:13,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:13,206 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:13,214 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:13,257 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-18 11:41:13,257 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:13,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 855 proven. 309 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 11:41:13,416 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:13,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12] total 31 [2018-11-18 11:41:13,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-18 11:41:13,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-18 11:41:13,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-18 11:41:13,417 INFO L87 Difference]: Start difference. First operand 1620 states and 1851 transitions. Second operand 31 states. [2018-11-18 11:41:13,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:13,524 INFO L93 Difference]: Finished difference Result 3399 states and 3923 transitions. [2018-11-18 11:41:13,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-18 11:41:13,525 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 186 [2018-11-18 11:41:13,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:13,529 INFO L225 Difference]: With dead ends: 3399 [2018-11-18 11:41:13,530 INFO L226 Difference]: Without dead ends: 1899 [2018-11-18 11:41:13,532 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-18 11:41:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2018-11-18 11:41:13,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1873. [2018-11-18 11:41:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2018-11-18 11:41:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2139 transitions. [2018-11-18 11:41:13,561 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2139 transitions. Word has length 186 [2018-11-18 11:41:13,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:13,561 INFO L480 AbstractCegarLoop]: Abstraction has 1873 states and 2139 transitions. [2018-11-18 11:41:13,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-18 11:41:13,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2139 transitions. [2018-11-18 11:41:13,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-18 11:41:13,562 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:13,562 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:13,563 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:13,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:13,563 INFO L82 PathProgramCache]: Analyzing trace with hash 402181967, now seen corresponding path program 26 times [2018-11-18 11:41:13,563 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:13,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:13,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:13,564 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:13,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:13,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:13,973 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:13,986 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:14,011 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:14,012 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:14,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:14,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:14,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-11-18 11:41:14,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-18 11:41:14,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-18 11:41:14,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-11-18 11:41:14,098 INFO L87 Difference]: Start difference. First operand 1873 states and 2139 transitions. Second operand 29 states. [2018-11-18 11:41:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:14,313 INFO L93 Difference]: Finished difference Result 3668 states and 4441 transitions. [2018-11-18 11:41:14,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-18 11:41:14,313 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 191 [2018-11-18 11:41:14,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:14,318 INFO L225 Difference]: With dead ends: 3668 [2018-11-18 11:41:14,318 INFO L226 Difference]: Without dead ends: 3666 [2018-11-18 11:41:14,319 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-11-18 11:41:14,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2018-11-18 11:41:14,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 1953. [2018-11-18 11:41:14,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1953 states. [2018-11-18 11:41:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2231 transitions. [2018-11-18 11:41:14,359 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2231 transitions. Word has length 191 [2018-11-18 11:41:14,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:14,359 INFO L480 AbstractCegarLoop]: Abstraction has 1953 states and 2231 transitions. [2018-11-18 11:41:14,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-18 11:41:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2231 transitions. [2018-11-18 11:41:14,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-18 11:41:14,361 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:14,361 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:14,361 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:14,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:14,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1769382034, now seen corresponding path program 27 times [2018-11-18 11:41:14,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:14,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:14,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:14,362 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:14,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:14,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:14,637 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:14,643 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:14,676 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-11-18 11:41:14,676 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:14,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:14,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:14,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-11-18 11:41:14,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-18 11:41:14,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-18 11:41:14,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-11-18 11:41:14,726 INFO L87 Difference]: Start difference. First operand 1953 states and 2231 transitions. Second operand 30 states. [2018-11-18 11:41:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:14,875 INFO L93 Difference]: Finished difference Result 3829 states and 4637 transitions. [2018-11-18 11:41:14,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-18 11:41:14,875 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 198 [2018-11-18 11:41:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:14,879 INFO L225 Difference]: With dead ends: 3829 [2018-11-18 11:41:14,879 INFO L226 Difference]: Without dead ends: 3827 [2018-11-18 11:41:14,880 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-11-18 11:41:14,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2018-11-18 11:41:14,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 2033. [2018-11-18 11:41:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2033 states. [2018-11-18 11:41:14,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2323 transitions. [2018-11-18 11:41:14,908 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2323 transitions. Word has length 198 [2018-11-18 11:41:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:14,908 INFO L480 AbstractCegarLoop]: Abstraction has 2033 states and 2323 transitions. [2018-11-18 11:41:14,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-18 11:41:14,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2323 transitions. [2018-11-18 11:41:14,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-18 11:41:14,910 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:14,910 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:14,910 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:14,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:14,911 INFO L82 PathProgramCache]: Analyzing trace with hash -746897809, now seen corresponding path program 28 times [2018-11-18 11:41:14,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:14,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:14,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:14,912 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:14,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:15,164 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:15,165 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:15,170 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:15,188 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:15,188 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:15,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:15,252 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:15,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-11-18 11:41:15,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-18 11:41:15,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-18 11:41:15,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-18 11:41:15,253 INFO L87 Difference]: Start difference. First operand 2033 states and 2323 transitions. Second operand 31 states. [2018-11-18 11:41:15,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:15,410 INFO L93 Difference]: Finished difference Result 3990 states and 4833 transitions. [2018-11-18 11:41:15,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-18 11:41:15,411 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 205 [2018-11-18 11:41:15,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:15,415 INFO L225 Difference]: With dead ends: 3990 [2018-11-18 11:41:15,415 INFO L226 Difference]: Without dead ends: 3988 [2018-11-18 11:41:15,416 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-18 11:41:15,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2018-11-18 11:41:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 2113. [2018-11-18 11:41:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2018-11-18 11:41:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2415 transitions. [2018-11-18 11:41:15,464 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2415 transitions. Word has length 205 [2018-11-18 11:41:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:15,465 INFO L480 AbstractCegarLoop]: Abstraction has 2113 states and 2415 transitions. [2018-11-18 11:41:15,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-18 11:41:15,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2415 transitions. [2018-11-18 11:41:15,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-18 11:41:15,467 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:15,467 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:15,467 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:15,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:15,467 INFO L82 PathProgramCache]: Analyzing trace with hash -480138162, now seen corresponding path program 29 times [2018-11-18 11:41:15,467 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:15,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:15,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:15,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:15,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:15,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:15,787 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:15,795 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:15,833 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-11-18 11:41:15,833 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:15,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:15,879 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:15,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-11-18 11:41:15,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-18 11:41:15,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-18 11:41:15,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-11-18 11:41:15,880 INFO L87 Difference]: Start difference. First operand 2113 states and 2415 transitions. Second operand 32 states. [2018-11-18 11:41:16,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:16,050 INFO L93 Difference]: Finished difference Result 4151 states and 5029 transitions. [2018-11-18 11:41:16,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-18 11:41:16,051 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 212 [2018-11-18 11:41:16,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:16,054 INFO L225 Difference]: With dead ends: 4151 [2018-11-18 11:41:16,054 INFO L226 Difference]: Without dead ends: 4149 [2018-11-18 11:41:16,055 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-11-18 11:41:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2018-11-18 11:41:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 2193. [2018-11-18 11:41:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-11-18 11:41:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 2507 transitions. [2018-11-18 11:41:16,085 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 2507 transitions. Word has length 212 [2018-11-18 11:41:16,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:16,085 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 2507 transitions. [2018-11-18 11:41:16,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-18 11:41:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 2507 transitions. [2018-11-18 11:41:16,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-18 11:41:16,087 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:16,087 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 19, 19, 19, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:16,087 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:16,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:16,088 INFO L82 PathProgramCache]: Analyzing trace with hash 345146097, now seen corresponding path program 13 times [2018-11-18 11:41:16,088 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:16,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:16,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:16,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:16,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2598 backedges. 999 proven. 1254 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-18 11:41:16,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:16,248 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:16,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:16,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2598 backedges. 999 proven. 1254 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-18 11:41:16,325 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:16,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-11-18 11:41:16,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-18 11:41:16,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-18 11:41:16,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-18 11:41:16,326 INFO L87 Difference]: Start difference. First operand 2193 states and 2507 transitions. Second operand 22 states. [2018-11-18 11:41:16,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:16,392 INFO L93 Difference]: Finished difference Result 4263 states and 4892 transitions. [2018-11-18 11:41:16,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-18 11:41:16,392 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 214 [2018-11-18 11:41:16,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:16,394 INFO L225 Difference]: With dead ends: 4263 [2018-11-18 11:41:16,394 INFO L226 Difference]: Without dead ends: 2204 [2018-11-18 11:41:16,397 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-18 11:41:16,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2018-11-18 11:41:16,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2200. [2018-11-18 11:41:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2018-11-18 11:41:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2514 transitions. [2018-11-18 11:41:16,428 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2514 transitions. Word has length 214 [2018-11-18 11:41:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:16,428 INFO L480 AbstractCegarLoop]: Abstraction has 2200 states and 2514 transitions. [2018-11-18 11:41:16,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-18 11:41:16,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2514 transitions. [2018-11-18 11:41:16,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-18 11:41:16,430 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:16,430 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:16,430 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:16,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:16,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1577273969, now seen corresponding path program 30 times [2018-11-18 11:41:16,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:16,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:16,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:16,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:16,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 3165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:16,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:16,809 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:16,816 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:16,865 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-11-18 11:41:16,865 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:16,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 3165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:16,907 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:16,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-11-18 11:41:16,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-18 11:41:16,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-18 11:41:16,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-11-18 11:41:16,909 INFO L87 Difference]: Start difference. First operand 2200 states and 2514 transitions. Second operand 33 states. [2018-11-18 11:41:17,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:17,107 INFO L93 Difference]: Finished difference Result 4319 states and 5232 transitions. [2018-11-18 11:41:17,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-18 11:41:17,107 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 219 [2018-11-18 11:41:17,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:17,111 INFO L225 Difference]: With dead ends: 4319 [2018-11-18 11:41:17,111 INFO L226 Difference]: Without dead ends: 4317 [2018-11-18 11:41:17,112 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-11-18 11:41:17,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2018-11-18 11:41:17,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 2280. [2018-11-18 11:41:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2018-11-18 11:41:17,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 2606 transitions. [2018-11-18 11:41:17,148 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 2606 transitions. Word has length 219 [2018-11-18 11:41:17,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:17,148 INFO L480 AbstractCegarLoop]: Abstraction has 2280 states and 2606 transitions. [2018-11-18 11:41:17,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-18 11:41:17,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 2606 transitions. [2018-11-18 11:41:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-18 11:41:17,150 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:17,150 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 20, 20, 20, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:17,150 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:17,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:17,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1735376910, now seen corresponding path program 14 times [2018-11-18 11:41:17,150 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:17,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:17,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:17,151 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:17,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2785 backedges. 1050 proven. 1390 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-18 11:41:17,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:17,332 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:17,339 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:17,373 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:17,373 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:17,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2785 backedges. 1050 proven. 1390 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-18 11:41:17,412 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:17,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-11-18 11:41:17,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-18 11:41:17,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-18 11:41:17,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-11-18 11:41:17,413 INFO L87 Difference]: Start difference. First operand 2280 states and 2606 transitions. Second operand 23 states. [2018-11-18 11:41:17,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:17,478 INFO L93 Difference]: Finished difference Result 4430 states and 5083 transitions. [2018-11-18 11:41:17,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-18 11:41:17,479 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 221 [2018-11-18 11:41:17,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:17,480 INFO L225 Difference]: With dead ends: 4430 [2018-11-18 11:41:17,480 INFO L226 Difference]: Without dead ends: 2291 [2018-11-18 11:41:17,482 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-11-18 11:41:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2018-11-18 11:41:17,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2287. [2018-11-18 11:41:17,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2018-11-18 11:41:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 2613 transitions. [2018-11-18 11:41:17,504 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 2613 transitions. Word has length 221 [2018-11-18 11:41:17,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:17,505 INFO L480 AbstractCegarLoop]: Abstraction has 2287 states and 2613 transitions. [2018-11-18 11:41:17,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-18 11:41:17,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 2613 transitions. [2018-11-18 11:41:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-18 11:41:17,506 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:17,506 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:17,507 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:17,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:17,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1715343058, now seen corresponding path program 31 times [2018-11-18 11:41:17,507 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:17,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:17,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:17,508 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:17,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 3379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:17,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:17,862 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:17,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:17,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 3379 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:17,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:17,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-11-18 11:41:17,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-18 11:41:17,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-18 11:41:17,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-11-18 11:41:17,937 INFO L87 Difference]: Start difference. First operand 2287 states and 2613 transitions. Second operand 34 states. [2018-11-18 11:41:18,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:18,148 INFO L93 Difference]: Finished difference Result 4487 states and 5435 transitions. [2018-11-18 11:41:18,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-18 11:41:18,148 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 226 [2018-11-18 11:41:18,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:18,151 INFO L225 Difference]: With dead ends: 4487 [2018-11-18 11:41:18,151 INFO L226 Difference]: Without dead ends: 4485 [2018-11-18 11:41:18,152 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-11-18 11:41:18,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4485 states. [2018-11-18 11:41:18,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4485 to 2367. [2018-11-18 11:41:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2367 states. [2018-11-18 11:41:18,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 2705 transitions. [2018-11-18 11:41:18,184 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 2705 transitions. Word has length 226 [2018-11-18 11:41:18,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:18,184 INFO L480 AbstractCegarLoop]: Abstraction has 2367 states and 2705 transitions. [2018-11-18 11:41:18,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-18 11:41:18,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 2705 transitions. [2018-11-18 11:41:18,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-18 11:41:18,185 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:18,186 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 21, 21, 21, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:18,186 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:18,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:18,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1275785263, now seen corresponding path program 15 times [2018-11-18 11:41:18,186 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:18,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:18,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:18,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:18,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2979 backedges. 1101 proven. 1533 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-18 11:41:18,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:18,369 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:18,376 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:18,414 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-11-18 11:41:18,414 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:18,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2979 backedges. 1271 proven. 454 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2018-11-18 11:41:18,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:18,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 14] total 37 [2018-11-18 11:41:18,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-18 11:41:18,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-18 11:41:18,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-11-18 11:41:18,651 INFO L87 Difference]: Start difference. First operand 2367 states and 2705 transitions. Second operand 37 states. [2018-11-18 11:41:18,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:18,765 INFO L93 Difference]: Finished difference Result 4927 states and 5679 transitions. [2018-11-18 11:41:18,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-18 11:41:18,765 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 228 [2018-11-18 11:41:18,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:18,767 INFO L225 Difference]: With dead ends: 4927 [2018-11-18 11:41:18,767 INFO L226 Difference]: Without dead ends: 2708 [2018-11-18 11:41:18,769 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-11-18 11:41:18,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2018-11-18 11:41:18,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2676. [2018-11-18 11:41:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2676 states. [2018-11-18 11:41:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 3057 transitions. [2018-11-18 11:41:18,794 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 3057 transitions. Word has length 228 [2018-11-18 11:41:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:18,795 INFO L480 AbstractCegarLoop]: Abstraction has 2676 states and 3057 transitions. [2018-11-18 11:41:18,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-11-18 11:41:18,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 3057 transitions. [2018-11-18 11:41:18,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-18 11:41:18,796 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:18,796 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:18,796 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:18,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:18,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1265683281, now seen corresponding path program 32 times [2018-11-18 11:41:18,797 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:18,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:18,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:18,797 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:18,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:19,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:19,182 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:19,190 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:19,240 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:19,240 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:19,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:19,284 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:19,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-11-18 11:41:19,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-11-18 11:41:19,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-11-18 11:41:19,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-11-18 11:41:19,285 INFO L87 Difference]: Start difference. First operand 2676 states and 3057 transitions. Second operand 35 states. [2018-11-18 11:41:19,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:19,507 INFO L93 Difference]: Finished difference Result 5258 states and 6370 transitions. [2018-11-18 11:41:19,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-18 11:41:19,508 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 233 [2018-11-18 11:41:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:19,512 INFO L225 Difference]: With dead ends: 5258 [2018-11-18 11:41:19,512 INFO L226 Difference]: Without dead ends: 5256 [2018-11-18 11:41:19,513 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-11-18 11:41:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2018-11-18 11:41:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 2770. [2018-11-18 11:41:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2018-11-18 11:41:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3165 transitions. [2018-11-18 11:41:19,572 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3165 transitions. Word has length 233 [2018-11-18 11:41:19,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:19,572 INFO L480 AbstractCegarLoop]: Abstraction has 2770 states and 3165 transitions. [2018-11-18 11:41:19,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-11-18 11:41:19,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3165 transitions. [2018-11-18 11:41:19,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-11-18 11:41:19,574 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:19,574 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:19,574 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:19,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:19,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1873269234, now seen corresponding path program 33 times [2018-11-18 11:41:19,574 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:19,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:19,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:19,575 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:19,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:19,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:19,936 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:19,945 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:20,020 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-11-18 11:41:20,020 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:20,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:20,067 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:20,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-11-18 11:41:20,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-18 11:41:20,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-18 11:41:20,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-11-18 11:41:20,068 INFO L87 Difference]: Start difference. First operand 2770 states and 3165 transitions. Second operand 36 states. [2018-11-18 11:41:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:20,268 INFO L93 Difference]: Finished difference Result 5447 states and 6600 transitions. [2018-11-18 11:41:20,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-18 11:41:20,269 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 240 [2018-11-18 11:41:20,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:20,273 INFO L225 Difference]: With dead ends: 5447 [2018-11-18 11:41:20,273 INFO L226 Difference]: Without dead ends: 5445 [2018-11-18 11:41:20,275 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-11-18 11:41:20,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5445 states. [2018-11-18 11:41:20,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5445 to 2864. [2018-11-18 11:41:20,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2018-11-18 11:41:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 3273 transitions. [2018-11-18 11:41:20,324 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 3273 transitions. Word has length 240 [2018-11-18 11:41:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:20,325 INFO L480 AbstractCegarLoop]: Abstraction has 2864 states and 3273 transitions. [2018-11-18 11:41:20,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-18 11:41:20,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 3273 transitions. [2018-11-18 11:41:20,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-18 11:41:20,326 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:20,326 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:20,326 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:20,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:20,326 INFO L82 PathProgramCache]: Analyzing trace with hash -188433457, now seen corresponding path program 34 times [2018-11-18 11:41:20,326 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:20,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:20,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:20,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:20,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 4063 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:20,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:20,847 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:20,853 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:20,884 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:20,884 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:20,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 4063 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:20,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:20,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-11-18 11:41:20,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-18 11:41:20,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-18 11:41:20,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-11-18 11:41:20,933 INFO L87 Difference]: Start difference. First operand 2864 states and 3273 transitions. Second operand 37 states. [2018-11-18 11:41:21,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:21,176 INFO L93 Difference]: Finished difference Result 5636 states and 6830 transitions. [2018-11-18 11:41:21,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-18 11:41:21,177 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 247 [2018-11-18 11:41:21,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:21,180 INFO L225 Difference]: With dead ends: 5636 [2018-11-18 11:41:21,180 INFO L226 Difference]: Without dead ends: 5634 [2018-11-18 11:41:21,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-11-18 11:41:21,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2018-11-18 11:41:21,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 2958. [2018-11-18 11:41:21,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2958 states. [2018-11-18 11:41:21,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 3381 transitions. [2018-11-18 11:41:21,224 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 3381 transitions. Word has length 247 [2018-11-18 11:41:21,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:21,224 INFO L480 AbstractCegarLoop]: Abstraction has 2958 states and 3381 transitions. [2018-11-18 11:41:21,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-11-18 11:41:21,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 3381 transitions. [2018-11-18 11:41:21,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-11-18 11:41:21,226 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:21,226 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:21,226 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:21,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:21,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1431462638, now seen corresponding path program 35 times [2018-11-18 11:41:21,227 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:21,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:21,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:21,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:21,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 4305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:21,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:21,634 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:21,640 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:21,692 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-11-18 11:41:21,692 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:21,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 4305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:21,759 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:21,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-11-18 11:41:21,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-18 11:41:21,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-18 11:41:21,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 11:41:21,761 INFO L87 Difference]: Start difference. First operand 2958 states and 3381 transitions. Second operand 38 states. [2018-11-18 11:41:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:21,971 INFO L93 Difference]: Finished difference Result 5825 states and 7060 transitions. [2018-11-18 11:41:21,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-18 11:41:21,971 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 254 [2018-11-18 11:41:21,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:21,974 INFO L225 Difference]: With dead ends: 5825 [2018-11-18 11:41:21,974 INFO L226 Difference]: Without dead ends: 5823 [2018-11-18 11:41:21,975 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 11:41:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5823 states. [2018-11-18 11:41:22,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5823 to 3052. [2018-11-18 11:41:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3052 states. [2018-11-18 11:41:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 3489 transitions. [2018-11-18 11:41:22,036 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 3489 transitions. Word has length 254 [2018-11-18 11:41:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:22,036 INFO L480 AbstractCegarLoop]: Abstraction has 3052 states and 3489 transitions. [2018-11-18 11:41:22,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-18 11:41:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 3489 transitions. [2018-11-18 11:41:22,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-18 11:41:22,038 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:22,038 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 23, 23, 23, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:22,038 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:22,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:22,039 INFO L82 PathProgramCache]: Analyzing trace with hash -171555119, now seen corresponding path program 16 times [2018-11-18 11:41:22,039 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:22,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:22,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:22,039 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:22,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3777 backedges. 1439 proven. 1840 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-11-18 11:41:22,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:22,304 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:22,313 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:22,337 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:22,337 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:22,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3777 backedges. 1439 proven. 1840 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-11-18 11:41:22,402 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:22,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-11-18 11:41:22,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-18 11:41:22,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-18 11:41:22,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-11-18 11:41:22,403 INFO L87 Difference]: Start difference. First operand 3052 states and 3489 transitions. Second operand 26 states. [2018-11-18 11:41:22,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:22,473 INFO L93 Difference]: Finished difference Result 5953 states and 6828 transitions. [2018-11-18 11:41:22,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-18 11:41:22,473 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 256 [2018-11-18 11:41:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:22,476 INFO L225 Difference]: With dead ends: 5953 [2018-11-18 11:41:22,476 INFO L226 Difference]: Without dead ends: 3063 [2018-11-18 11:41:22,478 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-11-18 11:41:22,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2018-11-18 11:41:22,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 3059. [2018-11-18 11:41:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3059 states. [2018-11-18 11:41:22,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 3496 transitions. [2018-11-18 11:41:22,508 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 3496 transitions. Word has length 256 [2018-11-18 11:41:22,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:22,508 INFO L480 AbstractCegarLoop]: Abstraction has 3059 states and 3496 transitions. [2018-11-18 11:41:22,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-18 11:41:22,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 3496 transitions. [2018-11-18 11:41:22,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-11-18 11:41:22,510 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:22,510 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:22,510 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:22,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:22,510 INFO L82 PathProgramCache]: Analyzing trace with hash 615467759, now seen corresponding path program 36 times [2018-11-18 11:41:22,510 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:22,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:22,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:22,511 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:22,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 4554 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:22,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:22,971 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:22,978 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:23,017 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-11-18 11:41:23,017 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:23,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 4554 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:23,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:23,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-11-18 11:41:23,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-18 11:41:23,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-18 11:41:23,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-11-18 11:41:23,069 INFO L87 Difference]: Start difference. First operand 3059 states and 3496 transitions. Second operand 39 states. [2018-11-18 11:41:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:23,297 INFO L93 Difference]: Finished difference Result 6021 states and 7297 transitions. [2018-11-18 11:41:23,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-18 11:41:23,297 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 261 [2018-11-18 11:41:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:23,300 INFO L225 Difference]: With dead ends: 6021 [2018-11-18 11:41:23,300 INFO L226 Difference]: Without dead ends: 6019 [2018-11-18 11:41:23,301 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-11-18 11:41:23,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6019 states. [2018-11-18 11:41:23,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6019 to 3153. [2018-11-18 11:41:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2018-11-18 11:41:23,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 3604 transitions. [2018-11-18 11:41:23,356 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 3604 transitions. Word has length 261 [2018-11-18 11:41:23,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:23,356 INFO L480 AbstractCegarLoop]: Abstraction has 3153 states and 3604 transitions. [2018-11-18 11:41:23,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-18 11:41:23,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 3604 transitions. [2018-11-18 11:41:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-18 11:41:23,358 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:23,358 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 24, 24, 24, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:23,359 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:23,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:23,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1636381330, now seen corresponding path program 17 times [2018-11-18 11:41:23,359 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:23,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:23,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:23,360 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:23,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:23,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 1500 proven. 2004 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-11-18 11:41:23,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:23,587 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:23,593 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:23,626 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2018-11-18 11:41:23,626 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:23,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 1500 proven. 2004 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-11-18 11:41:23,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:23,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-18 11:41:23,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-18 11:41:23,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-18 11:41:23,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-11-18 11:41:23,677 INFO L87 Difference]: Start difference. First operand 3153 states and 3604 transitions. Second operand 27 states. [2018-11-18 11:41:23,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:23,740 INFO L93 Difference]: Finished difference Result 6148 states and 7051 transitions. [2018-11-18 11:41:23,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-18 11:41:23,741 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 263 [2018-11-18 11:41:23,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:23,743 INFO L225 Difference]: With dead ends: 6148 [2018-11-18 11:41:23,743 INFO L226 Difference]: Without dead ends: 3164 [2018-11-18 11:41:23,746 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-11-18 11:41:23,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2018-11-18 11:41:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 3160. [2018-11-18 11:41:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2018-11-18 11:41:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 3611 transitions. [2018-11-18 11:41:23,776 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 3611 transitions. Word has length 263 [2018-11-18 11:41:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:23,776 INFO L480 AbstractCegarLoop]: Abstraction has 3160 states and 3611 transitions. [2018-11-18 11:41:23,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-18 11:41:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 3611 transitions. [2018-11-18 11:41:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-11-18 11:41:23,778 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:23,778 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:23,778 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:23,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:23,778 INFO L82 PathProgramCache]: Analyzing trace with hash 241078222, now seen corresponding path program 37 times [2018-11-18 11:41:23,778 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:23,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:23,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:23,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:23,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 4810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:24,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:24,205 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:24,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:24,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 4810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:24,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:24,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-11-18 11:41:24,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-18 11:41:24,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-18 11:41:24,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-11-18 11:41:24,307 INFO L87 Difference]: Start difference. First operand 3160 states and 3611 transitions. Second operand 40 states. [2018-11-18 11:41:24,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:24,507 INFO L93 Difference]: Finished difference Result 6217 states and 7534 transitions. [2018-11-18 11:41:24,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-18 11:41:24,507 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 268 [2018-11-18 11:41:24,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:24,511 INFO L225 Difference]: With dead ends: 6217 [2018-11-18 11:41:24,511 INFO L226 Difference]: Without dead ends: 6215 [2018-11-18 11:41:24,513 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-11-18 11:41:24,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2018-11-18 11:41:24,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 3254. [2018-11-18 11:41:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3254 states. [2018-11-18 11:41:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 3719 transitions. [2018-11-18 11:41:24,559 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 3719 transitions. Word has length 268 [2018-11-18 11:41:24,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:24,560 INFO L480 AbstractCegarLoop]: Abstraction has 3254 states and 3719 transitions. [2018-11-18 11:41:24,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-18 11:41:24,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 3719 transitions. [2018-11-18 11:41:24,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-11-18 11:41:24,562 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:24,562 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 25, 25, 25, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:24,562 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:24,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:24,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1669678159, now seen corresponding path program 18 times [2018-11-18 11:41:24,562 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:24,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:24,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:24,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:24,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1561 proven. 2175 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-11-18 11:41:24,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:24,783 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:24,799 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:24,831 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2018-11-18 11:41:24,831 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:24,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:25,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1767 proven. 627 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2018-11-18 11:41:25,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:25,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 16] total 43 [2018-11-18 11:41:25,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-11-18 11:41:25,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-11-18 11:41:25,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-18 11:41:25,098 INFO L87 Difference]: Start difference. First operand 3254 states and 3719 transitions. Second operand 43 states. [2018-11-18 11:41:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:25,215 INFO L93 Difference]: Finished difference Result 6735 states and 7755 transitions. [2018-11-18 11:41:25,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-18 11:41:25,215 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 270 [2018-11-18 11:41:25,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:25,218 INFO L225 Difference]: With dead ends: 6735 [2018-11-18 11:41:25,218 INFO L226 Difference]: Without dead ends: 3657 [2018-11-18 11:41:25,220 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-18 11:41:25,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2018-11-18 11:41:25,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 3619. [2018-11-18 11:41:25,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3619 states. [2018-11-18 11:41:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3619 states to 3619 states and 4135 transitions. [2018-11-18 11:41:25,254 INFO L78 Accepts]: Start accepts. Automaton has 3619 states and 4135 transitions. Word has length 270 [2018-11-18 11:41:25,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:25,255 INFO L480 AbstractCegarLoop]: Abstraction has 3619 states and 4135 transitions. [2018-11-18 11:41:25,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-11-18 11:41:25,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3619 states and 4135 transitions. [2018-11-18 11:41:25,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-11-18 11:41:25,256 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:25,256 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:25,257 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:25,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:25,257 INFO L82 PathProgramCache]: Analyzing trace with hash -18816497, now seen corresponding path program 38 times [2018-11-18 11:41:25,257 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:25,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:25,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:25,258 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:25,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 5073 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:25,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:25,674 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:25,679 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:25,702 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:25,702 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:25,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 5073 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:25,754 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:25,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-11-18 11:41:25,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-11-18 11:41:25,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-11-18 11:41:25,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-11-18 11:41:25,755 INFO L87 Difference]: Start difference. First operand 3619 states and 4135 transitions. Second operand 41 states. [2018-11-18 11:41:25,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:25,978 INFO L93 Difference]: Finished difference Result 7128 states and 8639 transitions. [2018-11-18 11:41:25,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-18 11:41:25,978 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 275 [2018-11-18 11:41:25,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:25,983 INFO L225 Difference]: With dead ends: 7128 [2018-11-18 11:41:25,983 INFO L226 Difference]: Without dead ends: 7126 [2018-11-18 11:41:25,984 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-11-18 11:41:25,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2018-11-18 11:41:26,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 3727. [2018-11-18 11:41:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3727 states. [2018-11-18 11:41:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 4259 transitions. [2018-11-18 11:41:26,037 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 4259 transitions. Word has length 275 [2018-11-18 11:41:26,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:26,037 INFO L480 AbstractCegarLoop]: Abstraction has 3727 states and 4259 transitions. [2018-11-18 11:41:26,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-11-18 11:41:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 4259 transitions. [2018-11-18 11:41:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-11-18 11:41:26,039 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:26,039 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:26,039 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:26,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:26,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1487582382, now seen corresponding path program 39 times [2018-11-18 11:41:26,039 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:26,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:26,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:26,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:26,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 5343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:26,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:26,497 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:26,505 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:26,546 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-11-18 11:41:26,546 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:26,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 5343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:26,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:26,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-11-18 11:41:26,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-11-18 11:41:26,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-11-18 11:41:26,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-11-18 11:41:26,602 INFO L87 Difference]: Start difference. First operand 3727 states and 4259 transitions. Second operand 42 states. [2018-11-18 11:41:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:26,837 INFO L93 Difference]: Finished difference Result 7345 states and 8903 transitions. [2018-11-18 11:41:26,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-18 11:41:26,837 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 282 [2018-11-18 11:41:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:26,841 INFO L225 Difference]: With dead ends: 7345 [2018-11-18 11:41:26,841 INFO L226 Difference]: Without dead ends: 7343 [2018-11-18 11:41:26,843 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-11-18 11:41:26,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2018-11-18 11:41:26,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 3835. [2018-11-18 11:41:26,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3835 states. [2018-11-18 11:41:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3835 states to 3835 states and 4383 transitions. [2018-11-18 11:41:26,899 INFO L78 Accepts]: Start accepts. Automaton has 3835 states and 4383 transitions. Word has length 282 [2018-11-18 11:41:26,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:26,899 INFO L480 AbstractCegarLoop]: Abstraction has 3835 states and 4383 transitions. [2018-11-18 11:41:26,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-11-18 11:41:26,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3835 states and 4383 transitions. [2018-11-18 11:41:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-11-18 11:41:26,901 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:26,901 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:26,902 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:26,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:26,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1449885999, now seen corresponding path program 40 times [2018-11-18 11:41:26,902 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:26,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:26,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:26,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:26,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 5620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:27,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:27,353 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:27,361 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:27,385 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:27,386 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:27,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 5620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:27,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:27,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-11-18 11:41:27,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-11-18 11:41:27,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-11-18 11:41:27,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-18 11:41:27,449 INFO L87 Difference]: Start difference. First operand 3835 states and 4383 transitions. Second operand 43 states. [2018-11-18 11:41:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:27,763 INFO L93 Difference]: Finished difference Result 7562 states and 9167 transitions. [2018-11-18 11:41:27,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-18 11:41:27,763 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 289 [2018-11-18 11:41:27,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:27,767 INFO L225 Difference]: With dead ends: 7562 [2018-11-18 11:41:27,767 INFO L226 Difference]: Without dead ends: 7560 [2018-11-18 11:41:27,768 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-18 11:41:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7560 states. [2018-11-18 11:41:27,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7560 to 3943. [2018-11-18 11:41:27,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3943 states. [2018-11-18 11:41:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 4507 transitions. [2018-11-18 11:41:27,822 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 4507 transitions. Word has length 289 [2018-11-18 11:41:27,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:27,822 INFO L480 AbstractCegarLoop]: Abstraction has 3943 states and 4507 transitions. [2018-11-18 11:41:27,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-11-18 11:41:27,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 4507 transitions. [2018-11-18 11:41:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-11-18 11:41:27,824 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:27,824 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:27,824 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:27,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:27,824 INFO L82 PathProgramCache]: Analyzing trace with hash 686084494, now seen corresponding path program 41 times [2018-11-18 11:41:27,824 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:27,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:27,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:27,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:27,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 5904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:28,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:28,276 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:28,284 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:28,329 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-11-18 11:41:28,329 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:28,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 5904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:28,389 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:28,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-11-18 11:41:28,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-18 11:41:28,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-18 11:41:28,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-11-18 11:41:28,390 INFO L87 Difference]: Start difference. First operand 3943 states and 4507 transitions. Second operand 44 states. [2018-11-18 11:41:28,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:28,659 INFO L93 Difference]: Finished difference Result 7779 states and 9431 transitions. [2018-11-18 11:41:28,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-18 11:41:28,659 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 296 [2018-11-18 11:41:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:28,664 INFO L225 Difference]: With dead ends: 7779 [2018-11-18 11:41:28,664 INFO L226 Difference]: Without dead ends: 7777 [2018-11-18 11:41:28,666 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-11-18 11:41:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7777 states. [2018-11-18 11:41:28,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7777 to 4051. [2018-11-18 11:41:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4051 states. [2018-11-18 11:41:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4051 states to 4051 states and 4631 transitions. [2018-11-18 11:41:28,727 INFO L78 Accepts]: Start accepts. Automaton has 4051 states and 4631 transitions. Word has length 296 [2018-11-18 11:41:28,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:28,727 INFO L480 AbstractCegarLoop]: Abstraction has 4051 states and 4631 transitions. [2018-11-18 11:41:28,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-18 11:41:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4051 states and 4631 transitions. [2018-11-18 11:41:28,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-11-18 11:41:28,729 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:28,729 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 27, 27, 27, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:28,730 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:28,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:28,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2087162545, now seen corresponding path program 19 times [2018-11-18 11:41:28,730 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:28,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:28,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:28,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:28,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5176 backedges. 1959 proven. 2538 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-11-18 11:41:28,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:28,967 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:28,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:28,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5176 backedges. 1959 proven. 2538 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-11-18 11:41:29,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:29,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-11-18 11:41:29,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-18 11:41:29,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-18 11:41:29,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-11-18 11:41:29,066 INFO L87 Difference]: Start difference. First operand 4051 states and 4631 transitions. Second operand 30 states. [2018-11-18 11:41:29,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:29,135 INFO L93 Difference]: Finished difference Result 7923 states and 9084 transitions. [2018-11-18 11:41:29,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-18 11:41:29,135 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 298 [2018-11-18 11:41:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:29,137 INFO L225 Difference]: With dead ends: 7923 [2018-11-18 11:41:29,138 INFO L226 Difference]: Without dead ends: 4062 [2018-11-18 11:41:29,140 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-11-18 11:41:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2018-11-18 11:41:29,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 4058. [2018-11-18 11:41:29,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4058 states. [2018-11-18 11:41:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4058 states to 4058 states and 4638 transitions. [2018-11-18 11:41:29,178 INFO L78 Accepts]: Start accepts. Automaton has 4058 states and 4638 transitions. Word has length 298 [2018-11-18 11:41:29,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:29,179 INFO L480 AbstractCegarLoop]: Abstraction has 4058 states and 4638 transitions. [2018-11-18 11:41:29,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-18 11:41:29,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4058 states and 4638 transitions. [2018-11-18 11:41:29,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-11-18 11:41:29,180 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:29,180 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:29,180 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:29,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:29,180 INFO L82 PathProgramCache]: Analyzing trace with hash 920725583, now seen corresponding path program 42 times [2018-11-18 11:41:29,181 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:29,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:29,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:29,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:29,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 6195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:29,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:29,869 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:29,877 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:29,923 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-11-18 11:41:29,923 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:29,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:29,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 6195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:29,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:29,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-11-18 11:41:29,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-11-18 11:41:29,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-11-18 11:41:29,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-11-18 11:41:29,984 INFO L87 Difference]: Start difference. First operand 4058 states and 4638 transitions. Second operand 45 states. [2018-11-18 11:41:30,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:30,209 INFO L93 Difference]: Finished difference Result 8003 states and 9702 transitions. [2018-11-18 11:41:30,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-18 11:41:30,210 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 303 [2018-11-18 11:41:30,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:30,214 INFO L225 Difference]: With dead ends: 8003 [2018-11-18 11:41:30,214 INFO L226 Difference]: Without dead ends: 8001 [2018-11-18 11:41:30,216 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-11-18 11:41:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2018-11-18 11:41:30,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 4166. [2018-11-18 11:41:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4166 states. [2018-11-18 11:41:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4166 states to 4166 states and 4762 transitions. [2018-11-18 11:41:30,277 INFO L78 Accepts]: Start accepts. Automaton has 4166 states and 4762 transitions. Word has length 303 [2018-11-18 11:41:30,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:30,277 INFO L480 AbstractCegarLoop]: Abstraction has 4166 states and 4762 transitions. [2018-11-18 11:41:30,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-11-18 11:41:30,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4166 states and 4762 transitions. [2018-11-18 11:41:30,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-11-18 11:41:30,280 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:30,280 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 28, 28, 28, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:30,280 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:30,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:30,280 INFO L82 PathProgramCache]: Analyzing trace with hash -56017614, now seen corresponding path program 20 times [2018-11-18 11:41:30,280 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:30,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:30,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:30,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:30,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 2030 proven. 2730 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-11-18 11:41:30,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:30,523 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:30,530 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:30,555 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:30,555 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:30,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 2030 proven. 2730 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-11-18 11:41:30,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:30,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-11-18 11:41:30,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-18 11:41:30,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-18 11:41:30,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-18 11:41:30,634 INFO L87 Difference]: Start difference. First operand 4166 states and 4762 transitions. Second operand 31 states. [2018-11-18 11:41:30,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:30,709 INFO L93 Difference]: Finished difference Result 8146 states and 9339 transitions. [2018-11-18 11:41:30,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-18 11:41:30,710 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 305 [2018-11-18 11:41:30,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:30,712 INFO L225 Difference]: With dead ends: 8146 [2018-11-18 11:41:30,712 INFO L226 Difference]: Without dead ends: 4177 [2018-11-18 11:41:30,715 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-11-18 11:41:30,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2018-11-18 11:41:30,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 4173. [2018-11-18 11:41:30,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4173 states. [2018-11-18 11:41:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4173 states to 4173 states and 4769 transitions. [2018-11-18 11:41:30,758 INFO L78 Accepts]: Start accepts. Automaton has 4173 states and 4769 transitions. Word has length 305 [2018-11-18 11:41:30,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:30,758 INFO L480 AbstractCegarLoop]: Abstraction has 4173 states and 4769 transitions. [2018-11-18 11:41:30,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-18 11:41:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4173 states and 4769 transitions. [2018-11-18 11:41:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-11-18 11:41:30,760 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:30,761 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:30,761 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:30,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:30,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1422203282, now seen corresponding path program 43 times [2018-11-18 11:41:30,761 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:30,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:30,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:30,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:30,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 6493 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:31,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:31,253 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:31,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:31,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 6493 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:31,347 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:31,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-11-18 11:41:31,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-18 11:41:31,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-18 11:41:31,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-11-18 11:41:31,348 INFO L87 Difference]: Start difference. First operand 4173 states and 4769 transitions. Second operand 46 states. [2018-11-18 11:41:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:31,584 INFO L93 Difference]: Finished difference Result 8227 states and 9973 transitions. [2018-11-18 11:41:31,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-18 11:41:31,584 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 310 [2018-11-18 11:41:31,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:31,589 INFO L225 Difference]: With dead ends: 8227 [2018-11-18 11:41:31,589 INFO L226 Difference]: Without dead ends: 8225 [2018-11-18 11:41:31,591 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-11-18 11:41:31,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8225 states. [2018-11-18 11:41:31,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8225 to 4281. [2018-11-18 11:41:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4281 states. [2018-11-18 11:41:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 4893 transitions. [2018-11-18 11:41:31,654 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 4893 transitions. Word has length 310 [2018-11-18 11:41:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:31,654 INFO L480 AbstractCegarLoop]: Abstraction has 4281 states and 4893 transitions. [2018-11-18 11:41:31,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-18 11:41:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 4893 transitions. [2018-11-18 11:41:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-11-18 11:41:31,656 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:31,656 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 29, 29, 29, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:31,656 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:31,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:31,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1047793775, now seen corresponding path program 21 times [2018-11-18 11:41:31,656 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:31,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:31,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:31,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:31,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5709 backedges. 2101 proven. 2929 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-11-18 11:41:31,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:31,920 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:31,941 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:31,963 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-18 11:41:31,963 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:31,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5709 backedges. 2343 proven. 828 refuted. 0 times theorem prover too weak. 2538 trivial. 0 not checked. [2018-11-18 11:41:32,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:32,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 18] total 49 [2018-11-18 11:41:32,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-11-18 11:41:32,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-11-18 11:41:32,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-11-18 11:41:32,296 INFO L87 Difference]: Start difference. First operand 4281 states and 4893 transitions. Second operand 49 states. [2018-11-18 11:41:32,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:32,432 INFO L93 Difference]: Finished difference Result 8823 states and 10151 transitions. [2018-11-18 11:41:32,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-18 11:41:32,433 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 312 [2018-11-18 11:41:32,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:32,436 INFO L225 Difference]: With dead ends: 8823 [2018-11-18 11:41:32,436 INFO L226 Difference]: Without dead ends: 4746 [2018-11-18 11:41:32,439 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-11-18 11:41:32,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2018-11-18 11:41:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 4702. [2018-11-18 11:41:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4702 states. [2018-11-18 11:41:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 5373 transitions. [2018-11-18 11:41:32,487 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 5373 transitions. Word has length 312 [2018-11-18 11:41:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:32,487 INFO L480 AbstractCegarLoop]: Abstraction has 4702 states and 5373 transitions. [2018-11-18 11:41:32,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-11-18 11:41:32,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 5373 transitions. [2018-11-18 11:41:32,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-18 11:41:32,489 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:32,489 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:32,490 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:32,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:32,490 INFO L82 PathProgramCache]: Analyzing trace with hash 72603503, now seen corresponding path program 44 times [2018-11-18 11:41:32,490 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:32,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:32,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:32,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:32,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 6798 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:33,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:33,001 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:33,008 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:33,031 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:33,031 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:33,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 6798 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:33,104 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:33,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-11-18 11:41:33,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-11-18 11:41:33,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-11-18 11:41:33,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-11-18 11:41:33,106 INFO L87 Difference]: Start difference. First operand 4702 states and 5373 transitions. Second operand 47 states. [2018-11-18 11:41:33,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:33,400 INFO L93 Difference]: Finished difference Result 9278 states and 11248 transitions. [2018-11-18 11:41:33,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-18 11:41:33,401 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 317 [2018-11-18 11:41:33,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:33,406 INFO L225 Difference]: With dead ends: 9278 [2018-11-18 11:41:33,406 INFO L226 Difference]: Without dead ends: 9276 [2018-11-18 11:41:33,408 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-11-18 11:41:33,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9276 states. [2018-11-18 11:41:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9276 to 4824. [2018-11-18 11:41:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4824 states. [2018-11-18 11:41:33,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 5513 transitions. [2018-11-18 11:41:33,491 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 5513 transitions. Word has length 317 [2018-11-18 11:41:33,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:33,491 INFO L480 AbstractCegarLoop]: Abstraction has 4824 states and 5513 transitions. [2018-11-18 11:41:33,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-11-18 11:41:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 5513 transitions. [2018-11-18 11:41:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-11-18 11:41:33,494 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:33,494 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:33,494 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:33,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:33,494 INFO L82 PathProgramCache]: Analyzing trace with hash 593163086, now seen corresponding path program 45 times [2018-11-18 11:41:33,495 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:33,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:33,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:33,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:33,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 7110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:34,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:34,177 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:34,184 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:34,234 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-11-18 11:41:34,234 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:34,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 7110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:34,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:34,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-11-18 11:41:34,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-11-18 11:41:34,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-11-18 11:41:34,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-11-18 11:41:34,301 INFO L87 Difference]: Start difference. First operand 4824 states and 5513 transitions. Second operand 48 states. [2018-11-18 11:41:34,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:34,581 INFO L93 Difference]: Finished difference Result 9523 states and 11546 transitions. [2018-11-18 11:41:34,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-18 11:41:34,582 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 324 [2018-11-18 11:41:34,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:34,588 INFO L225 Difference]: With dead ends: 9523 [2018-11-18 11:41:34,588 INFO L226 Difference]: Without dead ends: 9521 [2018-11-18 11:41:34,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-11-18 11:41:34,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9521 states. [2018-11-18 11:41:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9521 to 4946. [2018-11-18 11:41:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4946 states. [2018-11-18 11:41:34,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4946 states to 4946 states and 5653 transitions. [2018-11-18 11:41:34,667 INFO L78 Accepts]: Start accepts. Automaton has 4946 states and 5653 transitions. Word has length 324 [2018-11-18 11:41:34,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:34,668 INFO L480 AbstractCegarLoop]: Abstraction has 4946 states and 5653 transitions. [2018-11-18 11:41:34,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-11-18 11:41:34,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4946 states and 5653 transitions. [2018-11-18 11:41:34,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-11-18 11:41:34,670 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:34,670 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:34,671 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:34,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:34,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1688891761, now seen corresponding path program 46 times [2018-11-18 11:41:34,671 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:34,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:34,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:34,672 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:34,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:35,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:35,235 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:35,242 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:35,268 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:35,268 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:35,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:35,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:35,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-11-18 11:41:35,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-11-18 11:41:35,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-11-18 11:41:35,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-11-18 11:41:35,353 INFO L87 Difference]: Start difference. First operand 4946 states and 5653 transitions. Second operand 49 states. [2018-11-18 11:41:35,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:35,603 INFO L93 Difference]: Finished difference Result 9768 states and 11844 transitions. [2018-11-18 11:41:35,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-18 11:41:35,603 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 331 [2018-11-18 11:41:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:35,608 INFO L225 Difference]: With dead ends: 9768 [2018-11-18 11:41:35,608 INFO L226 Difference]: Without dead ends: 9766 [2018-11-18 11:41:35,610 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-11-18 11:41:35,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2018-11-18 11:41:35,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 5068. [2018-11-18 11:41:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5068 states. [2018-11-18 11:41:35,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5068 states to 5068 states and 5793 transitions. [2018-11-18 11:41:35,687 INFO L78 Accepts]: Start accepts. Automaton has 5068 states and 5793 transitions. Word has length 331 [2018-11-18 11:41:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:35,688 INFO L480 AbstractCegarLoop]: Abstraction has 5068 states and 5793 transitions. [2018-11-18 11:41:35,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-11-18 11:41:35,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5068 states and 5793 transitions. [2018-11-18 11:41:35,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-11-18 11:41:35,689 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:35,689 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:35,690 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:35,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:35,690 INFO L82 PathProgramCache]: Analyzing trace with hash -864880594, now seen corresponding path program 47 times [2018-11-18 11:41:35,690 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:35,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:35,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:35,690 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:35,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:36,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 7755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:36,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:36,262 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:36,269 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:36,324 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-11-18 11:41:36,324 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:36,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 7755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:36,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:36,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-11-18 11:41:36,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-11-18 11:41:36,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-11-18 11:41:36,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-11-18 11:41:36,396 INFO L87 Difference]: Start difference. First operand 5068 states and 5793 transitions. Second operand 50 states. [2018-11-18 11:41:36,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:36,668 INFO L93 Difference]: Finished difference Result 10013 states and 12142 transitions. [2018-11-18 11:41:36,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-18 11:41:36,668 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 338 [2018-11-18 11:41:36,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:36,674 INFO L225 Difference]: With dead ends: 10013 [2018-11-18 11:41:36,674 INFO L226 Difference]: Without dead ends: 10011 [2018-11-18 11:41:36,675 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-11-18 11:41:36,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10011 states. [2018-11-18 11:41:36,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10011 to 5190. [2018-11-18 11:41:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5190 states. [2018-11-18 11:41:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 5933 transitions. [2018-11-18 11:41:36,755 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 5933 transitions. Word has length 338 [2018-11-18 11:41:36,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:36,755 INFO L480 AbstractCegarLoop]: Abstraction has 5190 states and 5933 transitions. [2018-11-18 11:41:36,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-11-18 11:41:36,756 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 5933 transitions. [2018-11-18 11:41:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-11-18 11:41:36,757 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:36,757 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 31, 31, 31, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:36,758 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:36,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:36,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1592026769, now seen corresponding path program 22 times [2018-11-18 11:41:36,758 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:36,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:36,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:36,759 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:36,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6795 backedges. 2559 proven. 3348 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-11-18 11:41:37,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:37,080 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:37,087 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:37,115 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:37,115 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:37,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6795 backedges. 2559 proven. 3348 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-11-18 11:41:37,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:37,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-11-18 11:41:37,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-18 11:41:37,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-18 11:41:37,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-11-18 11:41:37,176 INFO L87 Difference]: Start difference. First operand 5190 states and 5933 transitions. Second operand 34 states. [2018-11-18 11:41:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:37,264 INFO L93 Difference]: Finished difference Result 10173 states and 11660 transitions. [2018-11-18 11:41:37,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-18 11:41:37,264 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 340 [2018-11-18 11:41:37,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:37,267 INFO L225 Difference]: With dead ends: 10173 [2018-11-18 11:41:37,267 INFO L226 Difference]: Without dead ends: 5201 [2018-11-18 11:41:37,270 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-11-18 11:41:37,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5201 states. [2018-11-18 11:41:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5201 to 5197. [2018-11-18 11:41:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5197 states. [2018-11-18 11:41:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 5940 transitions. [2018-11-18 11:41:37,321 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 5940 transitions. Word has length 340 [2018-11-18 11:41:37,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:37,321 INFO L480 AbstractCegarLoop]: Abstraction has 5197 states and 5940 transitions. [2018-11-18 11:41:37,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-18 11:41:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 5940 transitions. [2018-11-18 11:41:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-11-18 11:41:37,323 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:37,323 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:37,323 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:37,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:37,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1895321007, now seen corresponding path program 48 times [2018-11-18 11:41:37,323 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:37,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:37,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:37,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:37,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 8088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:37,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:37,938 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:37,945 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:38,006 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-11-18 11:41:38,006 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:38,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:38,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 8088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:38,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:38,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-11-18 11:41:38,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-11-18 11:41:38,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-11-18 11:41:38,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-11-18 11:41:38,080 INFO L87 Difference]: Start difference. First operand 5197 states and 5940 transitions. Second operand 51 states. [2018-11-18 11:41:38,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:38,332 INFO L93 Difference]: Finished difference Result 10265 states and 12447 transitions. [2018-11-18 11:41:38,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-18 11:41:38,332 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 345 [2018-11-18 11:41:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:38,338 INFO L225 Difference]: With dead ends: 10265 [2018-11-18 11:41:38,338 INFO L226 Difference]: Without dead ends: 10263 [2018-11-18 11:41:38,340 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-11-18 11:41:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10263 states. [2018-11-18 11:41:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10263 to 5319. [2018-11-18 11:41:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5319 states. [2018-11-18 11:41:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 6080 transitions. [2018-11-18 11:41:38,422 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 6080 transitions. Word has length 345 [2018-11-18 11:41:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:38,422 INFO L480 AbstractCegarLoop]: Abstraction has 5319 states and 6080 transitions. [2018-11-18 11:41:38,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-11-18 11:41:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 6080 transitions. [2018-11-18 11:41:38,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-18 11:41:38,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:38,425 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 32, 32, 32, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:38,425 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:38,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:38,425 INFO L82 PathProgramCache]: Analyzing trace with hash -144023598, now seen corresponding path program 23 times [2018-11-18 11:41:38,426 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:38,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:38,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:38,426 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:38,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7096 backedges. 2640 proven. 3568 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-11-18 11:41:38,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:38,762 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:38,769 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:38,814 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2018-11-18 11:41:38,814 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:38,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 7096 backedges. 2640 proven. 3568 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-11-18 11:41:38,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:38,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-11-18 11:41:38,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-11-18 11:41:38,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-11-18 11:41:38,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-11-18 11:41:38,879 INFO L87 Difference]: Start difference. First operand 5319 states and 6080 transitions. Second operand 35 states. [2018-11-18 11:41:38,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:38,970 INFO L93 Difference]: Finished difference Result 10424 states and 11947 transitions. [2018-11-18 11:41:38,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-18 11:41:38,970 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 347 [2018-11-18 11:41:38,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:38,974 INFO L225 Difference]: With dead ends: 10424 [2018-11-18 11:41:38,974 INFO L226 Difference]: Without dead ends: 5330 [2018-11-18 11:41:38,977 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-11-18 11:41:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5330 states. [2018-11-18 11:41:39,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5330 to 5326. [2018-11-18 11:41:39,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5326 states. [2018-11-18 11:41:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 6087 transitions. [2018-11-18 11:41:39,030 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 6087 transitions. Word has length 347 [2018-11-18 11:41:39,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:39,030 INFO L480 AbstractCegarLoop]: Abstraction has 5326 states and 6087 transitions. [2018-11-18 11:41:39,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-11-18 11:41:39,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 6087 transitions. [2018-11-18 11:41:39,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-11-18 11:41:39,033 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:39,033 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:39,034 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:39,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:39,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1187973874, now seen corresponding path program 49 times [2018-11-18 11:41:39,034 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:39,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:39,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:39,035 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:39,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 8428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:39,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:39,681 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:39,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:39,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 8428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:39,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:39,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-11-18 11:41:39,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-18 11:41:39,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-18 11:41:39,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-11-18 11:41:39,788 INFO L87 Difference]: Start difference. First operand 5326 states and 6087 transitions. Second operand 52 states. [2018-11-18 11:41:40,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:40,230 INFO L93 Difference]: Finished difference Result 10517 states and 12752 transitions. [2018-11-18 11:41:40,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-18 11:41:40,231 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 352 [2018-11-18 11:41:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:40,236 INFO L225 Difference]: With dead ends: 10517 [2018-11-18 11:41:40,236 INFO L226 Difference]: Without dead ends: 10515 [2018-11-18 11:41:40,238 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-11-18 11:41:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2018-11-18 11:41:40,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 5448. [2018-11-18 11:41:40,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5448 states. [2018-11-18 11:41:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5448 states to 5448 states and 6227 transitions. [2018-11-18 11:41:40,320 INFO L78 Accepts]: Start accepts. Automaton has 5448 states and 6227 transitions. Word has length 352 [2018-11-18 11:41:40,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:40,321 INFO L480 AbstractCegarLoop]: Abstraction has 5448 states and 6227 transitions. [2018-11-18 11:41:40,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-18 11:41:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5448 states and 6227 transitions. [2018-11-18 11:41:40,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-11-18 11:41:40,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:40,324 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 33, 33, 33, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:40,324 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:40,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:40,324 INFO L82 PathProgramCache]: Analyzing trace with hash 337030001, now seen corresponding path program 24 times [2018-11-18 11:41:40,324 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:40,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:40,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:40,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:40,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 2721 proven. 3795 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-11-18 11:41:40,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:40,668 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:40,676 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:40,722 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2018-11-18 11:41:40,722 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:40,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7404 backedges. 2999 proven. 1057 refuted. 0 times theorem prover too weak. 3348 trivial. 0 not checked. [2018-11-18 11:41:41,132 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:41,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 20] total 55 [2018-11-18 11:41:41,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-11-18 11:41:41,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-11-18 11:41:41,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-11-18 11:41:41,134 INFO L87 Difference]: Start difference. First operand 5448 states and 6227 transitions. Second operand 55 states. [2018-11-18 11:41:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:41,318 INFO L93 Difference]: Finished difference Result 11191 states and 12867 transitions. [2018-11-18 11:41:41,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-11-18 11:41:41,318 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 354 [2018-11-18 11:41:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:41,322 INFO L225 Difference]: With dead ends: 11191 [2018-11-18 11:41:41,322 INFO L226 Difference]: Without dead ends: 5975 [2018-11-18 11:41:41,325 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-11-18 11:41:41,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5975 states. [2018-11-18 11:41:41,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5975 to 5925. [2018-11-18 11:41:41,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5925 states. [2018-11-18 11:41:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5925 states to 5925 states and 6771 transitions. [2018-11-18 11:41:41,385 INFO L78 Accepts]: Start accepts. Automaton has 5925 states and 6771 transitions. Word has length 354 [2018-11-18 11:41:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:41,385 INFO L480 AbstractCegarLoop]: Abstraction has 5925 states and 6771 transitions. [2018-11-18 11:41:41,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-11-18 11:41:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 5925 states and 6771 transitions. [2018-11-18 11:41:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-11-18 11:41:41,387 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:41,387 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:41,388 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:41,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1295117105, now seen corresponding path program 50 times [2018-11-18 11:41:41,388 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:41,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:41,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:41,388 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:41,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 8775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:42,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:42,077 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:42,084 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:42,112 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:42,112 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:42,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 8775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:42,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:42,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-11-18 11:41:42,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-11-18 11:41:42,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-11-18 11:41:42,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-11-18 11:41:42,189 INFO L87 Difference]: Start difference. First operand 5925 states and 6771 transitions. Second operand 53 states. [2018-11-18 11:41:42,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:42,593 INFO L93 Difference]: Finished difference Result 11708 states and 14197 transitions. [2018-11-18 11:41:42,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-18 11:41:42,593 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 359 [2018-11-18 11:41:42,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:42,599 INFO L225 Difference]: With dead ends: 11708 [2018-11-18 11:41:42,600 INFO L226 Difference]: Without dead ends: 11706 [2018-11-18 11:41:42,602 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-11-18 11:41:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11706 states. [2018-11-18 11:41:42,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11706 to 6061. [2018-11-18 11:41:42,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6061 states. [2018-11-18 11:41:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 6927 transitions. [2018-11-18 11:41:42,699 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 6927 transitions. Word has length 359 [2018-11-18 11:41:42,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:42,699 INFO L480 AbstractCegarLoop]: Abstraction has 6061 states and 6927 transitions. [2018-11-18 11:41:42,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-11-18 11:41:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 6927 transitions. [2018-11-18 11:41:42,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-11-18 11:41:42,702 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:42,702 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:42,702 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:42,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:42,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1279071762, now seen corresponding path program 51 times [2018-11-18 11:41:42,702 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:42,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:42,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:42,703 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:42,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 9129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:43,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:43,382 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:43,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:43,449 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-11-18 11:41:43,450 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:43,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:43,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 9129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:43,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:43,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-11-18 11:41:43,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-18 11:41:43,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-18 11:41:43,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-11-18 11:41:43,529 INFO L87 Difference]: Start difference. First operand 6061 states and 6927 transitions. Second operand 54 states. [2018-11-18 11:41:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:43,911 INFO L93 Difference]: Finished difference Result 11981 states and 14529 transitions. [2018-11-18 11:41:43,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-18 11:41:43,911 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 366 [2018-11-18 11:41:43,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:43,917 INFO L225 Difference]: With dead ends: 11981 [2018-11-18 11:41:43,917 INFO L226 Difference]: Without dead ends: 11979 [2018-11-18 11:41:43,918 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-11-18 11:41:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11979 states. [2018-11-18 11:41:44,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11979 to 6197. [2018-11-18 11:41:44,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6197 states. [2018-11-18 11:41:44,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6197 states to 6197 states and 7083 transitions. [2018-11-18 11:41:44,016 INFO L78 Accepts]: Start accepts. Automaton has 6197 states and 7083 transitions. Word has length 366 [2018-11-18 11:41:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:44,016 INFO L480 AbstractCegarLoop]: Abstraction has 6197 states and 7083 transitions. [2018-11-18 11:41:44,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-18 11:41:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 6197 states and 7083 transitions. [2018-11-18 11:41:44,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-11-18 11:41:44,018 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:44,018 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:44,018 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:44,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:44,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1726538735, now seen corresponding path program 52 times [2018-11-18 11:41:44,018 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:44,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:44,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:44,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:44,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 9490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:41:44,721 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:44,721 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:44,728 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:44,758 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:44,758 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:44,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 9489 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 11:41:46,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 11:41:46,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [54] imperfect sequences [54] total 107 [2018-11-18 11:41:46,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-11-18 11:41:46,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-11-18 11:41:46,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2915, Invalid=8427, Unknown=0, NotChecked=0, Total=11342 [2018-11-18 11:41:46,167 INFO L87 Difference]: Start difference. First operand 6197 states and 7083 transitions. Second operand 107 states. [2018-11-18 11:41:49,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:49,527 INFO L93 Difference]: Finished difference Result 8660 states and 9886 transitions. [2018-11-18 11:41:49,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-11-18 11:41:49,528 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 373 [2018-11-18 11:41:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:49,530 INFO L225 Difference]: With dead ends: 8660 [2018-11-18 11:41:49,530 INFO L226 Difference]: Without dead ends: 2709 [2018-11-18 11:41:49,535 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16015 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=16944, Invalid=50916, Unknown=0, NotChecked=0, Total=67860 [2018-11-18 11:41:49,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2018-11-18 11:41:49,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 495. [2018-11-18 11:41:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-11-18 11:41:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 511 transitions. [2018-11-18 11:41:49,547 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 511 transitions. Word has length 373 [2018-11-18 11:41:49,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:49,547 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 511 transitions. [2018-11-18 11:41:49,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-11-18 11:41:49,547 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 511 transitions. [2018-11-18 11:41:49,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-11-18 11:41:49,548 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:49,548 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 35, 35, 35, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:49,548 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:49,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:49,548 INFO L82 PathProgramCache]: Analyzing trace with hash -802504079, now seen corresponding path program 25 times [2018-11-18 11:41:49,548 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:49,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:49,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:49,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:49,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8634 backedges. 3239 proven. 4270 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-11-18 11:41:49,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:49,910 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:49,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:49,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8634 backedges. 3239 proven. 4270 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-11-18 11:41:50,040 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:50,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-11-18 11:41:50,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-18 11:41:50,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-18 11:41:50,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 11:41:50,041 INFO L87 Difference]: Start difference. First operand 495 states and 511 transitions. Second operand 38 states. [2018-11-18 11:41:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:50,110 INFO L93 Difference]: Finished difference Result 625 states and 641 transitions. [2018-11-18 11:41:50,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-18 11:41:50,110 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 382 [2018-11-18 11:41:50,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:50,111 INFO L225 Difference]: With dead ends: 625 [2018-11-18 11:41:50,111 INFO L226 Difference]: Without dead ends: 495 [2018-11-18 11:41:50,112 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 11:41:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-11-18 11:41:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2018-11-18 11:41:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-11-18 11:41:50,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 510 transitions. [2018-11-18 11:41:50,120 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 510 transitions. Word has length 382 [2018-11-18 11:41:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:50,121 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 510 transitions. [2018-11-18 11:41:50,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-18 11:41:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 510 transitions. [2018-11-18 11:41:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-11-18 11:41:50,122 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:50,122 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 36, 36, 36, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:50,122 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:50,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:50,123 INFO L82 PathProgramCache]: Analyzing trace with hash -859399566, now seen corresponding path program 26 times [2018-11-18 11:41:50,123 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:50,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:50,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:50,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:50,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8973 backedges. 3330 proven. 4518 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-11-18 11:41:50,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:50,517 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:50,524 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:50,554 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:50,554 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:50,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8973 backedges. 3330 proven. 4518 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-11-18 11:41:50,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:50,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-11-18 11:41:50,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-18 11:41:50,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-18 11:41:50,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-11-18 11:41:50,630 INFO L87 Difference]: Start difference. First operand 495 states and 510 transitions. Second operand 39 states. [2018-11-18 11:41:50,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:50,719 INFO L93 Difference]: Finished difference Result 625 states and 640 transitions. [2018-11-18 11:41:50,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-18 11:41:50,719 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 389 [2018-11-18 11:41:50,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:50,719 INFO L225 Difference]: With dead ends: 625 [2018-11-18 11:41:50,719 INFO L226 Difference]: Without dead ends: 495 [2018-11-18 11:41:50,720 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-11-18 11:41:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-11-18 11:41:50,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2018-11-18 11:41:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-11-18 11:41:50,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 509 transitions. [2018-11-18 11:41:50,728 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 509 transitions. Word has length 389 [2018-11-18 11:41:50,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:50,728 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 509 transitions. [2018-11-18 11:41:50,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-18 11:41:50,728 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 509 transitions. [2018-11-18 11:41:50,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-11-18 11:41:50,730 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:50,730 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 37, 37, 37, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:50,730 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:50,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:50,730 INFO L82 PathProgramCache]: Analyzing trace with hash -511119535, now seen corresponding path program 27 times [2018-11-18 11:41:50,730 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:50,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:50,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:50,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:50,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9319 backedges. 3421 proven. 4773 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-11-18 11:41:51,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:51,171 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:51,177 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:51,208 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2018-11-18 11:41:51,208 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:51,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 9319 backedges. 3735 proven. 1314 refuted. 0 times theorem prover too weak. 4270 trivial. 0 not checked. [2018-11-18 11:41:51,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:51,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 22] total 61 [2018-11-18 11:41:51,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-11-18 11:41:51,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-11-18 11:41:51,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-11-18 11:41:51,736 INFO L87 Difference]: Start difference. First operand 495 states and 509 transitions. Second operand 61 states. [2018-11-18 11:41:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:51,891 INFO L93 Difference]: Finished difference Result 640 states and 656 transitions. [2018-11-18 11:41:51,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-11-18 11:41:51,891 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 396 [2018-11-18 11:41:51,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:51,892 INFO L225 Difference]: With dead ends: 640 [2018-11-18 11:41:51,892 INFO L226 Difference]: Without dead ends: 510 [2018-11-18 11:41:51,892 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-11-18 11:41:51,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2018-11-18 11:41:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 509. [2018-11-18 11:41:51,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-11-18 11:41:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 521 transitions. [2018-11-18 11:41:51,899 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 521 transitions. Word has length 396 [2018-11-18 11:41:51,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:51,900 INFO L480 AbstractCegarLoop]: Abstraction has 509 states and 521 transitions. [2018-11-18 11:41:51,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-11-18 11:41:51,900 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 521 transitions. [2018-11-18 11:41:51,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-18 11:41:51,901 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:51,901 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 39, 39, 39, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:51,901 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:51,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:51,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1604888145, now seen corresponding path program 28 times [2018-11-18 11:41:51,901 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:51,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:51,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:51,902 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:51,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10693 backedges. 3999 proven. 5304 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-11-18 11:41:52,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:52,347 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:52,354 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:52,395 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:52,395 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:52,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10693 backedges. 3999 proven. 5304 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-11-18 11:41:52,480 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:52,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-11-18 11:41:52,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-11-18 11:41:52,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-11-18 11:41:52,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-11-18 11:41:52,481 INFO L87 Difference]: Start difference. First operand 509 states and 521 transitions. Second operand 42 states. [2018-11-18 11:41:52,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:52,572 INFO L93 Difference]: Finished difference Result 653 states and 665 transitions. [2018-11-18 11:41:52,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-18 11:41:52,572 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 424 [2018-11-18 11:41:52,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:52,573 INFO L225 Difference]: With dead ends: 653 [2018-11-18 11:41:52,573 INFO L226 Difference]: Without dead ends: 509 [2018-11-18 11:41:52,574 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-11-18 11:41:52,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2018-11-18 11:41:52,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2018-11-18 11:41:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-11-18 11:41:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 520 transitions. [2018-11-18 11:41:52,583 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 520 transitions. Word has length 424 [2018-11-18 11:41:52,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:52,584 INFO L480 AbstractCegarLoop]: Abstraction has 509 states and 520 transitions. [2018-11-18 11:41:52,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-11-18 11:41:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 520 transitions. [2018-11-18 11:41:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-11-18 11:41:52,585 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:52,585 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 40, 40, 40, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:52,586 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:52,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:52,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2059932398, now seen corresponding path program 29 times [2018-11-18 11:41:52,586 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:52,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:52,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:52,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:52,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11070 backedges. 4100 proven. 5580 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-11-18 11:41:53,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:53,063 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:53,069 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:53,129 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-11-18 11:41:53,129 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:53,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 11070 backedges. 4100 proven. 5580 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-11-18 11:41:53,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:53,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-11-18 11:41:53,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-11-18 11:41:53,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-11-18 11:41:53,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-18 11:41:53,228 INFO L87 Difference]: Start difference. First operand 509 states and 520 transitions. Second operand 43 states. [2018-11-18 11:41:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:53,311 INFO L93 Difference]: Finished difference Result 653 states and 664 transitions. [2018-11-18 11:41:53,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-18 11:41:53,312 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 431 [2018-11-18 11:41:53,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:53,312 INFO L225 Difference]: With dead ends: 653 [2018-11-18 11:41:53,312 INFO L226 Difference]: Without dead ends: 509 [2018-11-18 11:41:53,313 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-11-18 11:41:53,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2018-11-18 11:41:53,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2018-11-18 11:41:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-11-18 11:41:53,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 519 transitions. [2018-11-18 11:41:53,320 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 519 transitions. Word has length 431 [2018-11-18 11:41:53,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:53,321 INFO L480 AbstractCegarLoop]: Abstraction has 509 states and 519 transitions. [2018-11-18 11:41:53,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-11-18 11:41:53,321 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 519 transitions. [2018-11-18 11:41:53,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-11-18 11:41:53,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:53,322 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 41, 41, 41, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:53,322 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:53,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:53,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1278166223, now seen corresponding path program 30 times [2018-11-18 11:41:53,322 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:53,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:53,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:53,323 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:53,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 11454 backedges. 4201 proven. 5863 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-11-18 11:41:53,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:53,814 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:53,821 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:41:53,882 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-11-18 11:41:53,882 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:53,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 11454 backedges. 4383 proven. 1491 refuted. 0 times theorem prover too weak. 5580 trivial. 0 not checked. [2018-11-18 11:41:54,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:54,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 23] total 66 [2018-11-18 11:41:54,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-11-18 11:41:54,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-11-18 11:41:54,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-11-18 11:41:54,452 INFO L87 Difference]: Start difference. First operand 509 states and 519 transitions. Second operand 66 states. [2018-11-18 11:41:54,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:54,635 INFO L93 Difference]: Finished difference Result 661 states and 672 transitions. [2018-11-18 11:41:54,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-11-18 11:41:54,635 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 438 [2018-11-18 11:41:54,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:54,636 INFO L225 Difference]: With dead ends: 661 [2018-11-18 11:41:54,636 INFO L226 Difference]: Without dead ends: 517 [2018-11-18 11:41:54,636 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-11-18 11:41:54,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2018-11-18 11:41:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 516. [2018-11-18 11:41:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2018-11-18 11:41:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 524 transitions. [2018-11-18 11:41:54,644 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 524 transitions. Word has length 438 [2018-11-18 11:41:54,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:54,644 INFO L480 AbstractCegarLoop]: Abstraction has 516 states and 524 transitions. [2018-11-18 11:41:54,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-11-18 11:41:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 524 transitions. [2018-11-18 11:41:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-11-18 11:41:54,645 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:54,645 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 43, 43, 43, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:54,646 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:54,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:54,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1335864216, now seen corresponding path program 31 times [2018-11-18 11:41:54,646 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:54,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:54,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:54,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:54,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12604 backedges. 4621 proven. 6450 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-11-18 11:41:55,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:55,179 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:55,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:55,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12604 backedges. 4621 proven. 6450 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-11-18 11:41:55,316 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:55,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-11-18 11:41:55,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-18 11:41:55,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-18 11:41:55,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-11-18 11:41:55,317 INFO L87 Difference]: Start difference. First operand 516 states and 524 transitions. Second operand 46 states. [2018-11-18 11:41:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:55,401 INFO L93 Difference]: Finished difference Result 667 states and 675 transitions. [2018-11-18 11:41:55,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-18 11:41:55,402 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 459 [2018-11-18 11:41:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:55,402 INFO L225 Difference]: With dead ends: 667 [2018-11-18 11:41:55,402 INFO L226 Difference]: Without dead ends: 516 [2018-11-18 11:41:55,403 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-11-18 11:41:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2018-11-18 11:41:55,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2018-11-18 11:41:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2018-11-18 11:41:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 523 transitions. [2018-11-18 11:41:55,413 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 523 transitions. Word has length 459 [2018-11-18 11:41:55,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:55,413 INFO L480 AbstractCegarLoop]: Abstraction has 516 states and 523 transitions. [2018-11-18 11:41:55,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-18 11:41:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 523 transitions. [2018-11-18 11:41:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-11-18 11:41:55,415 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:55,415 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 44, 44, 44, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:55,415 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:55,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:55,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1959011639, now seen corresponding path program 32 times [2018-11-18 11:41:55,416 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:55,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:55,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:55,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:41:55,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:55,965 INFO L134 CoverageAnalysis]: Checked inductivity of 13014 backedges. 4727 proven. 6754 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-11-18 11:41:55,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:55,966 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:55,972 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:41:56,010 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:41:56,010 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:56,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13014 backedges. 4727 proven. 6754 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-11-18 11:41:56,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:56,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-11-18 11:41:56,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-11-18 11:41:56,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-11-18 11:41:56,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-11-18 11:41:56,110 INFO L87 Difference]: Start difference. First operand 516 states and 523 transitions. Second operand 47 states. [2018-11-18 11:41:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:56,216 INFO L93 Difference]: Finished difference Result 667 states and 674 transitions. [2018-11-18 11:41:56,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-18 11:41:56,216 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 466 [2018-11-18 11:41:56,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:56,217 INFO L225 Difference]: With dead ends: 667 [2018-11-18 11:41:56,217 INFO L226 Difference]: Without dead ends: 516 [2018-11-18 11:41:56,217 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-11-18 11:41:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2018-11-18 11:41:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2018-11-18 11:41:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2018-11-18 11:41:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 522 transitions. [2018-11-18 11:41:56,228 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 522 transitions. Word has length 466 [2018-11-18 11:41:56,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:56,228 INFO L480 AbstractCegarLoop]: Abstraction has 516 states and 522 transitions. [2018-11-18 11:41:56,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-11-18 11:41:56,229 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 522 transitions. [2018-11-18 11:41:56,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2018-11-18 11:41:56,230 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:56,230 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 45, 45, 45, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:56,231 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:56,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:56,231 INFO L82 PathProgramCache]: Analyzing trace with hash -231707976, now seen corresponding path program 33 times [2018-11-18 11:41:56,231 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:56,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:56,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:56,232 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:56,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13431 backedges. 4833 proven. 7065 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-11-18 11:41:56,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:56,833 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:56,841 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:41:56,877 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-11-18 11:41:56,877 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:56,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13431 backedges. 5229 proven. 1752 refuted. 0 times theorem prover too weak. 6450 trivial. 0 not checked. [2018-11-18 11:41:57,549 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:57,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 25] total 72 [2018-11-18 11:41:57,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-11-18 11:41:57,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-11-18 11:41:57,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-11-18 11:41:57,550 INFO L87 Difference]: Start difference. First operand 516 states and 522 transitions. Second operand 72 states. [2018-11-18 11:41:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:57,765 INFO L93 Difference]: Finished difference Result 682 states and 690 transitions. [2018-11-18 11:41:57,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-11-18 11:41:57,765 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 473 [2018-11-18 11:41:57,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:57,766 INFO L225 Difference]: With dead ends: 682 [2018-11-18 11:41:57,766 INFO L226 Difference]: Without dead ends: 531 [2018-11-18 11:41:57,766 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-11-18 11:41:57,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-11-18 11:41:57,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 530. [2018-11-18 11:41:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-11-18 11:41:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 534 transitions. [2018-11-18 11:41:57,777 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 534 transitions. Word has length 473 [2018-11-18 11:41:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:57,778 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 534 transitions. [2018-11-18 11:41:57,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-11-18 11:41:57,778 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 534 transitions. [2018-11-18 11:41:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2018-11-18 11:41:57,780 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:57,780 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 47, 47, 47, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:57,780 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:57,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:57,780 INFO L82 PathProgramCache]: Analyzing trace with hash -371108936, now seen corresponding path program 34 times [2018-11-18 11:41:57,780 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:57,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:57,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:57,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:57,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 15069 backedges. 5521 proven. 7708 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2018-11-18 11:41:58,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:58,409 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:58,416 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:41:58,453 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 11:41:58,453 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:58,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:41:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 15069 backedges. 5521 proven. 7708 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2018-11-18 11:41:58,571 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:41:58,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-11-18 11:41:58,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-11-18 11:41:58,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-11-18 11:41:58,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-11-18 11:41:58,572 INFO L87 Difference]: Start difference. First operand 530 states and 534 transitions. Second operand 50 states. [2018-11-18 11:41:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:41:58,677 INFO L93 Difference]: Finished difference Result 695 states and 699 transitions. [2018-11-18 11:41:58,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-18 11:41:58,677 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 501 [2018-11-18 11:41:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:41:58,678 INFO L225 Difference]: With dead ends: 695 [2018-11-18 11:41:58,678 INFO L226 Difference]: Without dead ends: 530 [2018-11-18 11:41:58,678 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-11-18 11:41:58,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-11-18 11:41:58,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2018-11-18 11:41:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-11-18 11:41:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 533 transitions. [2018-11-18 11:41:58,689 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 533 transitions. Word has length 501 [2018-11-18 11:41:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:41:58,689 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 533 transitions. [2018-11-18 11:41:58,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-11-18 11:41:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 533 transitions. [2018-11-18 11:41:58,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-11-18 11:41:58,691 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:41:58,691 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 48, 48, 48, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-11-18 11:41:58,692 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:41:58,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:41:58,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1291692393, now seen corresponding path program 35 times [2018-11-18 11:41:58,692 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:41:58,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:41:58,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:58,693 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:41:58,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:41:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:41:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 15517 backedges. 6957 proven. 6556 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2018-11-18 11:41:59,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:41:59,323 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:41:59,332 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 11:41:59,438 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2018-11-18 11:41:59,438 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:41:59,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:42:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15517 backedges. 5637 proven. 8040 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2018-11-18 11:42:00,101 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:42:00,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 51] total 99 [2018-11-18 11:42:00,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-11-18 11:42:00,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-11-18 11:42:00,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-11-18 11:42:00,103 INFO L87 Difference]: Start difference. First operand 530 states and 533 transitions. Second operand 99 states. [2018-11-18 11:42:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:42:00,509 INFO L93 Difference]: Finished difference Result 864 states and 891 transitions. [2018-11-18 11:42:00,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-11-18 11:42:00,509 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 508 [2018-11-18 11:42:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:42:00,510 INFO L225 Difference]: With dead ends: 864 [2018-11-18 11:42:00,510 INFO L226 Difference]: Without dead ends: 699 [2018-11-18 11:42:00,511 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4606 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-11-18 11:42:00,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-11-18 11:42:00,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 698. [2018-11-18 11:42:00,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2018-11-18 11:42:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 699 transitions. [2018-11-18 11:42:00,527 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 699 transitions. Word has length 508 [2018-11-18 11:42:00,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:42:00,528 INFO L480 AbstractCegarLoop]: Abstraction has 698 states and 699 transitions. [2018-11-18 11:42:00,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-11-18 11:42:00,528 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 699 transitions. [2018-11-18 11:42:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2018-11-18 11:42:00,530 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:42:00,530 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 97, 97, 50, 50, 50, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-11-18 11:42:00,530 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:42:00,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:42:00,530 INFO L82 PathProgramCache]: Analyzing trace with hash 2027882231, now seen corresponding path program 36 times [2018-11-18 11:42:00,530 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:42:00,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:42:00,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:42:00,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:42:00,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:42:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:42:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 28374 backedges. 11941 proven. 8725 refuted. 0 times theorem prover too weak. 7708 trivial. 0 not checked. [2018-11-18 11:42:01,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:42:01,305 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:42:01,313 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 11:42:01,426 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 53 check-sat command(s) [2018-11-18 11:42:01,427 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:42:01,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:42:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 28374 backedges. 11941 proven. 8725 refuted. 0 times theorem prover too weak. 7708 trivial. 0 not checked. [2018-11-18 11:42:01,609 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:42:01,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-11-18 11:42:01,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-11-18 11:42:01,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-11-18 11:42:01,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-11-18 11:42:01,610 INFO L87 Difference]: Start difference. First operand 698 states and 699 transitions. Second operand 53 states. [2018-11-18 11:42:01,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:42:01,736 INFO L93 Difference]: Finished difference Result 1031 states and 1032 transitions. [2018-11-18 11:42:01,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-18 11:42:01,736 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 690 [2018-11-18 11:42:01,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:42:01,737 INFO L225 Difference]: With dead ends: 1031 [2018-11-18 11:42:01,737 INFO L226 Difference]: Without dead ends: 698 [2018-11-18 11:42:01,738 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-11-18 11:42:01,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2018-11-18 11:42:01,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2018-11-18 11:42:01,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2018-11-18 11:42:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 698 transitions. [2018-11-18 11:42:01,757 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 698 transitions. Word has length 690 [2018-11-18 11:42:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:42:01,758 INFO L480 AbstractCegarLoop]: Abstraction has 698 states and 698 transitions. [2018-11-18 11:42:01,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-11-18 11:42:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 698 transitions. [2018-11-18 11:42:01,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2018-11-18 11:42:01,761 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:42:01,761 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 98, 98, 51, 51, 51, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-11-18 11:42:01,762 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:42:01,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:42:01,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1162309752, now seen corresponding path program 37 times [2018-11-18 11:42:01,762 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:42:01,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:42:01,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:42:01,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:42:01,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:42:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:42:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 28963 backedges. 12561 proven. 8694 refuted. 0 times theorem prover too weak. 7708 trivial. 0 not checked. [2018-11-18 11:42:02,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:42:02,572 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:42:02,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:42:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:42:02,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:42:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 28963 backedges. 294 proven. 28669 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:42:04,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:42:04,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 100] total 100 [2018-11-18 11:42:04,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-11-18 11:42:04,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-11-18 11:42:04,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-11-18 11:42:04,404 INFO L87 Difference]: Start difference. First operand 698 states and 698 transitions. Second operand 101 states. [2018-11-18 11:42:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:42:04,678 INFO L93 Difference]: Finished difference Result 1057 states and 1107 transitions. [2018-11-18 11:42:04,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-11-18 11:42:04,678 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 697 [2018-11-18 11:42:04,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:42:04,679 INFO L225 Difference]: With dead ends: 1057 [2018-11-18 11:42:04,679 INFO L226 Difference]: Without dead ends: 1056 [2018-11-18 11:42:04,679 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-11-18 11:42:04,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2018-11-18 11:42:04,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1055. [2018-11-18 11:42:04,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2018-11-18 11:42:04,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1055 transitions. [2018-11-18 11:42:04,713 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1055 transitions. Word has length 697 [2018-11-18 11:42:04,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:42:04,713 INFO L480 AbstractCegarLoop]: Abstraction has 1055 states and 1055 transitions. [2018-11-18 11:42:04,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-11-18 11:42:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1055 transitions. [2018-11-18 11:42:04,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2018-11-18 11:42:04,717 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:42:04,717 INFO L375 BasicCegarLoop]: trace histogram [150, 150, 149, 149, 99, 99, 99, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-11-18 11:42:04,717 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:42:04,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:42:04,717 INFO L82 PathProgramCache]: Analyzing trace with hash 187694705, now seen corresponding path program 38 times [2018-11-18 11:42:04,718 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:42:04,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:42:04,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:42:04,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:42:04,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:42:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:42:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 67978 backedges. 52372 proven. 15353 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-11-18 11:42:06,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:42:06,511 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:42:06,519 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:42:06,600 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:42:06,600 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:42:06,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:42:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 67978 backedges. 44943 proven. 15353 refuted. 0 times theorem prover too weak. 7682 trivial. 0 not checked. [2018-11-18 11:42:07,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:42:07,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 55] total 101 [2018-11-18 11:42:07,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-11-18 11:42:07,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-11-18 11:42:07,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-11-18 11:42:07,038 INFO L87 Difference]: Start difference. First operand 1055 states and 1055 transitions. Second operand 101 states. [2018-11-18 11:42:07,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:42:07,542 INFO L93 Difference]: Finished difference Result 1055 states and 1055 transitions. [2018-11-18 11:42:07,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-11-18 11:42:07,542 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 1054 [2018-11-18 11:42:07,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:42:07,542 INFO L225 Difference]: With dead ends: 1055 [2018-11-18 11:42:07,542 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 11:42:07,544 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 1106 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4794 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-11-18 11:42:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 11:42:07,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 11:42:07,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 11:42:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 11:42:07,545 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1054 [2018-11-18 11:42:07,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:42:07,545 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:42:07,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-11-18 11:42:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:42:07,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 11:42:07,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 11:42:08,090 WARN L180 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 765 DAG size of output: 467 [2018-11-18 11:42:09,997 WARN L180 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 456 DAG size of output: 400 [2018-11-18 11:42:10,002 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 11:42:10,002 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:42:10,002 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:42:10,002 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 11:42:10,002 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:42:10,002 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:42:10,002 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-18 11:42:10,002 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 14 27) no Hoare annotation was computed. [2018-11-18 11:42:10,002 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2018-11-18 11:42:10,002 INFO L425 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2018-11-18 11:42:10,002 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 14 27) no Hoare annotation was computed. [2018-11-18 11:42:10,003 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 11:42:10,003 INFO L425 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-18 11:42:10,003 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 14 27) the Hoare annotation is: true [2018-11-18 11:42:10,003 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-18 11:42:10,003 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-18 11:42:10,003 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-18 11:42:10,003 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-18 11:42:10,003 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-18 11:42:10,003 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-18 11:42:10,003 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 25) no Hoare annotation was computed. [2018-11-18 11:42:10,004 INFO L421 ceAbstractionStarter]: At program point L18-3(lines 18 25) the Hoare annotation is: (let ((.cse20 (<= main_~y~0 33)) (.cse13 (<= 51 main_~x~0))) (let ((.cse12 (<= main_~y~0 38)) (.cse1 (<= main_~y~0 26)) (.cse16 (<= main_~y~0 43)) (.cse9 (<= main_~y~0 47)) (.cse5 (<= main_~y~0 34)) (.cse25 (<= main_~y~0 1)) (.cse14 (<= main_~y~0 18)) (.cse11 (<= main_~y~0 2)) (.cse19 (<= main_~y~0 25)) (.cse23 (<= main_~y~0 39)) (.cse28 (<= main_~y~0 35)) (.cse7 (<= main_~y~0 17)) (.cse39 (<= main_~y~0 41)) (.cse24 (<= main_~y~0 28)) (.cse37 (<= main_~y~0 14)) (.cse41 (<= main_~y~0 22)) (.cse15 (<= main_~y~0 46)) (.cse45 (<= main_~y~0 37)) (.cse21 (<= main_~y~0 19)) (.cse35 (<= main_~y~0 32)) (.cse34 (<= main_~y~0 36)) (.cse32 (<= main_~y~0 45)) (.cse30 (<= main_~y~0 27)) (.cse48 (<= main_~y~0 23)) (.cse33 (<= main_~y~0 6)) (.cse26 (<= main_~y~0 24)) (.cse4 (<= main_~y~0 10)) (.cse27 (<= main_~y~0 31)) (.cse31 (<= main_~y~0 20)) (.cse47 (<= main_~y~0 3)) (.cse29 (<= main_~y~0 15)) (.cse38 (<= main_~y~0 11)) (.cse3 (<= main_~y~0 7)) (.cse49 (<= main_~y~0 50)) (.cse50 (<= main_~y~0 42)) (.cse6 (<= main_~x~0 50)) (.cse2 (<= main_~y~0 12)) (.cse22 (<= main_~y~0 29)) (.cse8 (<= main_~y~0 30)) (.cse43 (<= main_~y~0 21)) (.cse46 (<= main_~y~0 8)) (.cse44 (<= main_~y~0 13)) (.cse40 (<= main_~y~0 49)) (.cse36 (<= main_~y~0 0)) (.cse17 (<= main_~y~0 48)) (.cse42 (<= main_~y~0 40)) (.cse10 (<= main_~x~0 51)) (.cse18 (<= main_~y~0 9)) (.cse53 (<= main_~y~0 44)) (.cse54 (<= main_~y~0 4)) (.cse52 (<= main_~y~0 5)) (.cse51 (<= main_~y~0 16)) (.cse0 (and .cse20 .cse13))) (or (and .cse0 (<= main_~x~0 76) .cse1) (and .cse0 .cse2 (<= main_~x~0 90)) (and (<= main_~x~0 95) .cse3 .cse0) (and .cse4 (<= main_~x~0 92) .cse0) (and (<= 34 main_~x~0) .cse5 .cse6) (and .cse7 (<= main_~x~0 85) .cse0) (and .cse0 (<= main_~x~0 72) .cse8) (and .cse9 (<= 47 main_~x~0) .cse10) (and (<= main_~x~0 100) .cse0 .cse11) (and (<= main_~x~0 38) .cse12 (<= 38 main_~x~0)) (and (<= main_~x~0 64) .cse13 .cse12) (and .cse6 .cse14 (<= 18 main_~x~0)) (and (<= 46 main_~x~0) .cse6 .cse15) (and .cse6 .cse1 (<= 26 main_~x~0)) (and .cse13 .cse16 (<= main_~x~0 59)) (and .cse13 (<= main_~x~0 54) .cse17) (and (<= 9 main_~x~0) .cse10 .cse18) (and (<= 43 main_~x~0) .cse16 (<= main_~x~0 43)) (and (<= 25 main_~x~0) .cse19 (<= main_~x~0 25)) (and .cse20 .cse10 (<= 33 main_~x~0)) (and .cse0 (<= main_~x~0 83) .cse21) (and .cse22 (<= main_~x~0 29) (<= 29 main_~x~0)) (and .cse9 (<= main_~x~0 55) .cse13) (and (<= main_~x~0 63) .cse13 .cse23) (and .cse24 (<= 28 main_~x~0) .cse10) (and .cse5 .cse13 (<= main_~x~0 68)) (and .cse0 .cse25 (<= main_~x~0 101)) (and (<= main_~x~0 78) .cse26 .cse0) (and .cse0 (<= main_~x~0 71) .cse27) (and .cse28 .cse13 (<= main_~x~0 67)) (and (<= main_~x~0 87) .cse29 .cse0) (and .cse0 (<= main_~x~0 75) .cse30) (and (<= 20 main_~x~0) .cse31 (<= main_~x~0 20)) (and .cse10 (<= 1 main_~x~0) .cse25) (and .cse32 (<= main_~x~0 57) .cse13) (and .cse33 (<= main_~x~0 6) (<= 6 main_~x~0)) (and .cse34 (<= main_~x~0 36) (<= 36 main_~x~0)) (and .cse0 .cse14 (<= main_~x~0 84)) (and (<= 2 main_~x~0) .cse11 (<= main_~x~0 2)) (and .cse0 (<= main_~x~0 77) .cse19) (and .cse0 (<= main_~x~0 69)) (and (<= 39 main_~x~0) .cse10 .cse23) (and (<= main_~x~0 32) (<= 32 main_~x~0) .cse35) (and (<= main_~x~0 0) (<= 0 main_~x~0) .cse36) (and (<= main_~x~0 88) .cse37 .cse0) (and .cse38 (<= 11 main_~x~0) (<= main_~x~0 11)) (and .cse39 .cse13 (<= main_~x~0 61)) (and (<= 35 main_~x~0) .cse28 (<= main_~x~0 35)) (and (<= 49 main_~x~0) (<= main_~x~0 49) .cse40) (and (<= main_~x~0 80) .cse0 .cse41) (and .cse42 (<= main_~x~0 62) .cse13) (and .cse7 (<= 17 main_~x~0) .cse10) (and .cse43 (<= main_~x~0 81) .cse0) (and .cse39 (<= 41 main_~x~0) (<= main_~x~0 41)) (and .cse24 .cse0 (<= main_~x~0 74)) (and .cse6 .cse37 (<= 14 main_~x~0)) (and (<= main_~x~0 22) .cse41 (<= 22 main_~x~0)) (and .cse44 (<= 13 main_~x~0) .cse10) (and (<= main_~x~0 56) .cse13 .cse15) (and (<= 37 main_~x~0) .cse10 .cse45) (and .cse45 .cse13 (<= main_~x~0 65)) (and .cse21 (<= main_~x~0 19) (<= 19 main_~x~0)) (and (<= main_~x~0 70) .cse0 .cse35) (and .cse34 .cse13 (<= main_~x~0 66)) (and (<= (+ main_~y~0 1) 0) .cse0 (<= main_~x~0 103)) (and .cse0 (<= main_~x~0 94) .cse46) (and (<= 45 main_~x~0) .cse32 (<= main_~x~0 45)) (and (<= main_~x~0 27) .cse30 (<= 27 main_~x~0)) (and .cse10 .cse47 (<= 3 main_~x~0)) (and .cse48 .cse10 (<= 23 main_~x~0)) (and (<= main_~x~0 79) .cse48 .cse0) (and (<= main_~x~0 96) .cse33 .cse0) (and .cse26 .cse10 (<= 24 main_~x~0)) (and .cse4 .cse6 (<= 10 main_~x~0)) (and (<= 31 main_~x~0) (<= main_~x~0 31) .cse27) (and .cse31 .cse0 (<= main_~x~0 82)) (and (<= main_~x~0 99) .cse47 .cse0) (and .cse49 .cse13 (<= main_~x~0 52)) (and (<= 15 main_~x~0) .cse29 (<= main_~x~0 15)) (and .cse50 .cse13 (<= main_~x~0 60)) (and (<= 16 main_~x~0) .cse51 .cse10) (and .cse38 (<= main_~x~0 91) .cse0) (and .cse3 (<= main_~x~0 7) (<= 7 main_~x~0)) (and .cse49 (<= 50 main_~x~0) .cse6) (and .cse50 .cse6 (<= 42 main_~x~0)) (and (<= 12 main_~x~0) .cse10 .cse2) (and .cse22 (<= main_~x~0 73) .cse0) (and .cse52 .cse0 (<= main_~x~0 97)) (and (<= 30 main_~x~0) (<= main_~x~0 30) .cse8) (and .cse43 (<= 21 main_~x~0) (<= main_~x~0 21)) (and (<= 8 main_~x~0) (<= main_~x~0 8) .cse46) (and .cse44 .cse0 (<= main_~x~0 89)) (and .cse10 .cse13 (<= main_~y~0 51)) (and (<= main_~x~0 53) .cse13 .cse40) (and .cse0 (<= main_~x~0 102) .cse36) (and (<= 48 main_~x~0) (<= main_~x~0 48) .cse17) (and .cse42 .cse10 (<= 40 main_~x~0)) (and (<= 44 main_~x~0) (<= main_~x~0 44) .cse53) (and .cse18 .cse0 (<= main_~x~0 93)) (and (<= main_~x~0 58) .cse13 .cse53) (and .cse54 .cse0 (<= main_~x~0 98)) (and .cse54 (<= 4 main_~x~0) (<= main_~x~0 4)) (and (<= 5 main_~x~0) .cse52 (<= main_~x~0 5)) (and .cse51 (<= main_~x~0 86) .cse0)))) [2018-11-18 11:42:10,005 INFO L425 ceAbstractionStarter]: For program point L18-4(lines 18 25) no Hoare annotation was computed. [2018-11-18 11:42:10,005 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 11:42:10,005 INFO L425 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-18 11:42:10,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:42:10 BoogieIcfgContainer [2018-11-18 11:42:10,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:42:10,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:42:10,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:42:10,037 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:42:10,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:41:02" (3/4) ... [2018-11-18 11:42:10,042 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 11:42:10,049 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 11:42:10,050 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 11:42:10,055 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 11:42:10,055 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 11:42:10,055 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 11:42:10,085 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1016072b-e9e1-45b7-96f5-77b3f8bffb9e/bin-2019/uautomizer/witness.graphml [2018-11-18 11:42:10,085 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:42:10,086 INFO L168 Benchmark]: Toolchain (without parser) took 68270.92 ms. Allocated memory was 1.0 GB in the beginning and 2.7 GB in the end (delta: 1.6 GB). Free memory was 958.1 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 431.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:42:10,086 INFO L168 Benchmark]: CDTParser took 0.14 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 11:42:10,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.36 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:42:10,087 INFO L168 Benchmark]: Boogie Preprocessor took 16.87 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:42:10,087 INFO L168 Benchmark]: RCFGBuilder took 208.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -165.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:42:10,087 INFO L168 Benchmark]: TraceAbstraction took 67857.66 ms. Allocated memory was 1.2 GB in the beginning and 2.7 GB in the end (delta: 1.5 GB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.8 GB. Max. memory is 11.5 GB. [2018-11-18 11:42:10,088 INFO L168 Benchmark]: Witness Printer took 48.85 ms. Allocated memory is still 2.7 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 2.1 kB). Peak memory consumption was 2.1 kB. Max. memory is 11.5 GB. [2018-11-18 11:42:10,089 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 136.36 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.87 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 208.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -165.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 67857.66 ms. Allocated memory was 1.2 GB in the beginning and 2.7 GB in the end (delta: 1.5 GB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.8 GB. Max. memory is 11.5 GB. * Witness Printer took 48.85 ms. Allocated memory is still 2.7 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 2.1 kB). Peak memory consumption was 2.1 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: 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: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 33 && 51 <= x) && x <= 76) && y <= 26) || (((y <= 33 && 51 <= x) && y <= 12) && x <= 90)) || ((x <= 95 && y <= 7) && y <= 33 && 51 <= x)) || ((y <= 10 && x <= 92) && y <= 33 && 51 <= x)) || ((34 <= x && y <= 34) && x <= 50)) || ((y <= 17 && x <= 85) && y <= 33 && 51 <= x)) || (((y <= 33 && 51 <= x) && x <= 72) && y <= 30)) || ((y <= 47 && 47 <= x) && x <= 51)) || ((x <= 100 && y <= 33 && 51 <= x) && y <= 2)) || ((x <= 38 && y <= 38) && 38 <= x)) || ((x <= 64 && 51 <= x) && y <= 38)) || ((x <= 50 && y <= 18) && 18 <= x)) || ((46 <= x && x <= 50) && y <= 46)) || ((x <= 50 && y <= 26) && 26 <= x)) || ((51 <= x && y <= 43) && x <= 59)) || ((51 <= x && x <= 54) && y <= 48)) || ((9 <= x && x <= 51) && y <= 9)) || ((43 <= x && y <= 43) && x <= 43)) || ((25 <= x && y <= 25) && x <= 25)) || ((y <= 33 && x <= 51) && 33 <= x)) || (((y <= 33 && 51 <= x) && x <= 83) && y <= 19)) || ((y <= 29 && x <= 29) && 29 <= x)) || ((y <= 47 && x <= 55) && 51 <= x)) || ((x <= 63 && 51 <= x) && y <= 39)) || ((y <= 28 && 28 <= x) && x <= 51)) || ((y <= 34 && 51 <= x) && x <= 68)) || (((y <= 33 && 51 <= x) && y <= 1) && x <= 101)) || ((x <= 78 && y <= 24) && y <= 33 && 51 <= x)) || (((y <= 33 && 51 <= x) && x <= 71) && y <= 31)) || ((y <= 35 && 51 <= x) && x <= 67)) || ((x <= 87 && y <= 15) && y <= 33 && 51 <= x)) || (((y <= 33 && 51 <= x) && x <= 75) && y <= 27)) || ((20 <= x && y <= 20) && x <= 20)) || ((x <= 51 && 1 <= x) && y <= 1)) || ((y <= 45 && x <= 57) && 51 <= x)) || ((y <= 6 && x <= 6) && 6 <= x)) || ((y <= 36 && x <= 36) && 36 <= x)) || (((y <= 33 && 51 <= x) && y <= 18) && x <= 84)) || ((2 <= x && y <= 2) && x <= 2)) || (((y <= 33 && 51 <= x) && x <= 77) && y <= 25)) || ((y <= 33 && 51 <= x) && x <= 69)) || ((39 <= x && x <= 51) && y <= 39)) || ((x <= 32 && 32 <= x) && y <= 32)) || ((x <= 0 && 0 <= x) && y <= 0)) || ((x <= 88 && y <= 14) && y <= 33 && 51 <= x)) || ((y <= 11 && 11 <= x) && x <= 11)) || ((y <= 41 && 51 <= x) && x <= 61)) || ((35 <= x && y <= 35) && x <= 35)) || ((49 <= x && x <= 49) && y <= 49)) || ((x <= 80 && y <= 33 && 51 <= x) && y <= 22)) || ((y <= 40 && x <= 62) && 51 <= x)) || ((y <= 17 && 17 <= x) && x <= 51)) || ((y <= 21 && x <= 81) && y <= 33 && 51 <= x)) || ((y <= 41 && 41 <= x) && x <= 41)) || ((y <= 28 && y <= 33 && 51 <= x) && x <= 74)) || ((x <= 50 && y <= 14) && 14 <= x)) || ((x <= 22 && y <= 22) && 22 <= x)) || ((y <= 13 && 13 <= x) && x <= 51)) || ((x <= 56 && 51 <= x) && y <= 46)) || ((37 <= x && x <= 51) && y <= 37)) || ((y <= 37 && 51 <= x) && x <= 65)) || ((y <= 19 && x <= 19) && 19 <= x)) || ((x <= 70 && y <= 33 && 51 <= x) && y <= 32)) || ((y <= 36 && 51 <= x) && x <= 66)) || ((y + 1 <= 0 && y <= 33 && 51 <= x) && x <= 103)) || (((y <= 33 && 51 <= x) && x <= 94) && y <= 8)) || ((45 <= x && y <= 45) && x <= 45)) || ((x <= 27 && y <= 27) && 27 <= x)) || ((x <= 51 && y <= 3) && 3 <= x)) || ((y <= 23 && x <= 51) && 23 <= x)) || ((x <= 79 && y <= 23) && y <= 33 && 51 <= x)) || ((x <= 96 && y <= 6) && y <= 33 && 51 <= x)) || ((y <= 24 && x <= 51) && 24 <= x)) || ((y <= 10 && x <= 50) && 10 <= x)) || ((31 <= x && x <= 31) && y <= 31)) || ((y <= 20 && y <= 33 && 51 <= x) && x <= 82)) || ((x <= 99 && y <= 3) && y <= 33 && 51 <= x)) || ((y <= 50 && 51 <= x) && x <= 52)) || ((15 <= x && y <= 15) && x <= 15)) || ((y <= 42 && 51 <= x) && x <= 60)) || ((16 <= x && y <= 16) && x <= 51)) || ((y <= 11 && x <= 91) && y <= 33 && 51 <= x)) || ((y <= 7 && x <= 7) && 7 <= x)) || ((y <= 50 && 50 <= x) && x <= 50)) || ((y <= 42 && x <= 50) && 42 <= x)) || ((12 <= x && x <= 51) && y <= 12)) || ((y <= 29 && x <= 73) && y <= 33 && 51 <= x)) || ((y <= 5 && y <= 33 && 51 <= x) && x <= 97)) || ((30 <= x && x <= 30) && y <= 30)) || ((y <= 21 && 21 <= x) && x <= 21)) || ((8 <= x && x <= 8) && y <= 8)) || ((y <= 13 && y <= 33 && 51 <= x) && x <= 89)) || ((x <= 51 && 51 <= x) && y <= 51)) || ((x <= 53 && 51 <= x) && y <= 49)) || (((y <= 33 && 51 <= x) && x <= 102) && y <= 0)) || ((48 <= x && x <= 48) && y <= 48)) || ((y <= 40 && x <= 51) && 40 <= x)) || ((44 <= x && x <= 44) && y <= 44)) || ((y <= 9 && y <= 33 && 51 <= x) && x <= 93)) || ((x <= 58 && 51 <= x) && y <= 44)) || ((y <= 4 && y <= 33 && 51 <= x) && x <= 98)) || ((y <= 4 && 4 <= x) && x <= 4)) || ((5 <= x && y <= 5) && x <= 5)) || ((y <= 16 && x <= 86) && y <= 33 && 51 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 6 error locations. SAFE Result, 67.7s OverallTime, 95 OverallIterations, 150 TraceHistogramMax, 17.1s AutomataDifference, 0.0s DeadEndRemovalTime, 2.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 2807 SDtfs, 14480 SDslu, 23478 SDs, 0 SdLazy, 27993 SolverSat, 2931 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24956 GetRequests, 21932 SyntacticMatches, 0 SemanticMatches, 3024 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25485 ImplicationChecksByTransitivity, 32.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6197occurred in iteration=80, 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: 2.7s AutomataMinimizationTime, 95 MinimizatonAttempts, 106559 StatesRemovedByMinimization, 85 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 109 NumberOfFragments, 1184 HoareAnnotationTreeSize, 5 FomulaSimplifications, 3666 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 5 FomulaSimplificationsInter, 12092 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 36.0s InterpolantComputationTime, 44378 NumberOfCodeBlocks, 43762 NumberOfCodeBlocksAsserted, 1322 NumberOfCheckSat, 44193 ConstructedInterpolants, 0 QuantifiedInterpolants, 40788027 SizeOfPredicates, 25 NumberOfNonLiveVariables, 34233 ConjunctsInSsa, 2566 ConjunctsInUnsatCore, 185 InterpolantComputations, 6 PerfectInterpolantSequences, 392787/984972 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...