./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d28857c86a3c83fc75b1b8cf8125f1c52a370911 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:24:56,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:24:56,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:24:56,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:24:56,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:24:56,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:24:56,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:24:56,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:24:56,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:24:56,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:24:56,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:24:56,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:24:56,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:24:56,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:24:56,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:24:56,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:24:56,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:24:56,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:24:56,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:24:56,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:24:56,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:24:56,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:24:56,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:24:56,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:24:56,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:24:56,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:24:56,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:24:56,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:24:56,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:24:56,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:24:56,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:24:56,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:24:56,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:24:56,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:24:56,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:24:56,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:24:56,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:24:56,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:24:56,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:24:56,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:24:56,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:24:56,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-15 21:24:56,587 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:24:56,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:24:56,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:24:56,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:24:56,589 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:24:56,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:24:56,590 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:24:56,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:24:56,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:24:56,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:24:56,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:24:56,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:24:56,591 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-15 21:24:56,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:24:56,591 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:24:56,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:24:56,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:24:56,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:24:56,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:24:56,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:24:56,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:24:56,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:24:56,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:24:56,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:24:56,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:24:56,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:24:56,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:24:56,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28857c86a3c83fc75b1b8cf8125f1c52a370911 [2019-11-15 21:24:56,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:24:56,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:24:56,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:24:56,634 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:24:56,634 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:24:56,635 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2019-11-15 21:24:56,689 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/data/4c812ce96/f32ace7f1a5c4e1ba3813ba2387c5b92/FLAG8ae4904a4 [2019-11-15 21:24:57,074 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:24:57,074 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2019-11-15 21:24:57,079 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/data/4c812ce96/f32ace7f1a5c4e1ba3813ba2387c5b92/FLAG8ae4904a4 [2019-11-15 21:24:57,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/data/4c812ce96/f32ace7f1a5c4e1ba3813ba2387c5b92 [2019-11-15 21:24:57,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:24:57,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:24:57,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:24:57,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:24:57,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:24:57,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:24:57" (1/1) ... [2019-11-15 21:24:57,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c851dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57, skipping insertion in model container [2019-11-15 21:24:57,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:24:57" (1/1) ... [2019-11-15 21:24:57,107 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:24:57,120 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:24:57,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:24:57,249 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:24:57,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:24:57,341 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:24:57,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57 WrapperNode [2019-11-15 21:24:57,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:24:57,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:24:57,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:24:57,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:24:57,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57" (1/1) ... [2019-11-15 21:24:57,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57" (1/1) ... [2019-11-15 21:24:57,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:24:57,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:24:57,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:24:57,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:24:57,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57" (1/1) ... [2019-11-15 21:24:57,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57" (1/1) ... [2019-11-15 21:24:57,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57" (1/1) ... [2019-11-15 21:24:57,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57" (1/1) ... [2019-11-15 21:24:57,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57" (1/1) ... [2019-11-15 21:24:57,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57" (1/1) ... [2019-11-15 21:24:57,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57" (1/1) ... [2019-11-15 21:24:57,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:24:57,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:24:57,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:24:57,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:24:57,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:24:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:24:57,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:24:57,651 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:24:57,651 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 21:24:57,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:24:57 BoogieIcfgContainer [2019-11-15 21:24:57,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:24:57,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:24:57,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:24:57,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:24:57,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:24:57" (1/3) ... [2019-11-15 21:24:57,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af012d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:24:57, skipping insertion in model container [2019-11-15 21:24:57,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:24:57" (2/3) ... [2019-11-15 21:24:57,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af012d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:24:57, skipping insertion in model container [2019-11-15 21:24:57,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:24:57" (3/3) ... [2019-11-15 21:24:57,661 INFO L109 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn.c [2019-11-15 21:24:57,670 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:24:57,677 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 21:24:57,688 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 21:24:57,710 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:24:57,710 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:24:57,710 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:24:57,710 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:24:57,710 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:24:57,711 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:24:57,711 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:24:57,711 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:24:57,724 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-15 21:24:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-15 21:24:57,729 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:24:57,730 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-15 21:24:57,732 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:24:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:24:57,737 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-15 21:24:57,746 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:24:57,746 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219653457] [2019-11-15 21:24:57,746 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:57,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:57,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:24:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:24:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:24:57,919 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219653457] [2019-11-15 21:24:57,920 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:24:57,920 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:24:57,920 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042348719] [2019-11-15 21:24:57,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:24:57,925 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:24:57,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:24:57,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:24:57,940 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-15 21:24:57,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:24:57,983 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-15 21:24:57,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:24:57,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-11-15 21:24:57,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:24:57,993 INFO L225 Difference]: With dead ends: 20 [2019-11-15 21:24:57,993 INFO L226 Difference]: Without dead ends: 8 [2019-11-15 21:24:57,996 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:24:58,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-15 21:24:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-15 21:24:58,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-15 21:24:58,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-15 21:24:58,043 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2019-11-15 21:24:58,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:24:58,044 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-15 21:24:58,044 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:24:58,044 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-15 21:24:58,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 21:24:58,045 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:24:58,045 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 21:24:58,045 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:24:58,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:24:58,046 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2019-11-15 21:24:58,046 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:24:58,046 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883299993] [2019-11-15 21:24:58,046 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:58,047 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:58,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:24:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:24:58,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:24:58,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883299993] [2019-11-15 21:24:58,112 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:24:58,112 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:24:58,112 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055375259] [2019-11-15 21:24:58,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:24:58,114 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:24:58,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:24:58,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:24:58,115 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-11-15 21:24:58,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:24:58,148 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-15 21:24:58,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 21:24:58,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-15 21:24:58,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:24:58,150 INFO L225 Difference]: With dead ends: 15 [2019-11-15 21:24:58,150 INFO L226 Difference]: Without dead ends: 14 [2019-11-15 21:24:58,151 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:24:58,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-15 21:24:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-11-15 21:24:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-15 21:24:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-15 21:24:58,154 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2019-11-15 21:24:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:24:58,154 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-15 21:24:58,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:24:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-15 21:24:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 21:24:58,155 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:24:58,155 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 21:24:58,155 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:24:58,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:24:58,156 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-11-15 21:24:58,156 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:24:58,156 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110967431] [2019-11-15 21:24:58,156 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:58,156 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:58,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:24:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:24:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:24:58,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110967431] [2019-11-15 21:24:58,194 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:24:58,194 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:24:58,194 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411155308] [2019-11-15 21:24:58,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:24:58,195 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:24:58,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:24:58,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:24:58,195 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-11-15 21:24:58,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:24:58,225 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-15 21:24:58,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:24:58,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-15 21:24:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:24:58,226 INFO L225 Difference]: With dead ends: 12 [2019-11-15 21:24:58,226 INFO L226 Difference]: Without dead ends: 11 [2019-11-15 21:24:58,227 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 21:24:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-15 21:24:58,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-15 21:24:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-15 21:24:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-15 21:24:58,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2019-11-15 21:24:58,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:24:58,230 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-15 21:24:58,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:24:58,230 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-15 21:24:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 21:24:58,231 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:24:58,231 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-15 21:24:58,232 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:24:58,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:24:58,232 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-11-15 21:24:58,232 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:24:58,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666911224] [2019-11-15 21:24:58,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:58,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:58,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:24:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:24:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:24:58,348 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666911224] [2019-11-15 21:24:58,348 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642967085] [2019-11-15 21:24:58,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:24:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:24:58,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 21:24:58,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:24:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:24:58,410 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:24:58,410 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-15 21:24:58,410 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848258149] [2019-11-15 21:24:58,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:24:58,411 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:24:58,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:24:58,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:24:58,412 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2019-11-15 21:24:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:24:58,457 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-15 21:24:58,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 21:24:58,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-15 21:24:58,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:24:58,459 INFO L225 Difference]: With dead ends: 18 [2019-11-15 21:24:58,459 INFO L226 Difference]: Without dead ends: 17 [2019-11-15 21:24:58,459 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:24:58,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-15 21:24:58,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-15 21:24:58,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-15 21:24:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-15 21:24:58,463 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2019-11-15 21:24:58,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:24:58,463 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-15 21:24:58,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:24:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-15 21:24:58,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 21:24:58,464 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:24:58,464 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-11-15 21:24:58,665 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:24:58,668 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:24:58,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:24:58,668 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-11-15 21:24:58,669 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:24:58,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066392220] [2019-11-15 21:24:58,669 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:58,669 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:58,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:24:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:24:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:24:58,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066392220] [2019-11-15 21:24:58,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134572154] [2019-11-15 21:24:58,778 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:24:58,812 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:24:58,812 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:24:58,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 21:24:58,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:24:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:24:58,821 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:24:58,822 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-15 21:24:58,822 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57248389] [2019-11-15 21:24:58,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 21:24:58,823 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:24:58,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 21:24:58,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 21:24:58,823 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2019-11-15 21:24:58,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:24:58,896 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-15 21:24:58,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 21:24:58,897 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-15 21:24:58,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:24:58,897 INFO L225 Difference]: With dead ends: 23 [2019-11-15 21:24:58,897 INFO L226 Difference]: Without dead ends: 22 [2019-11-15 21:24:58,898 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-11-15 21:24:58,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-15 21:24:58,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-11-15 21:24:58,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-15 21:24:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-11-15 21:24:58,902 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2019-11-15 21:24:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:24:58,902 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-11-15 21:24:58,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 21:24:58,903 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-11-15 21:24:58,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 21:24:58,903 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:24:58,904 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-11-15 21:24:59,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:24:59,106 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:24:59,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:24:59,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-11-15 21:24:59,107 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:24:59,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711702165] [2019-11-15 21:24:59,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:59,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:59,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:24:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:24:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:24:59,247 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711702165] [2019-11-15 21:24:59,247 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773737772] [2019-11-15 21:24:59,247 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:24:59,281 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-15 21:24:59,282 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:24:59,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 21:24:59,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:24:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:24:59,299 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:24:59,300 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-15 21:24:59,300 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871114326] [2019-11-15 21:24:59,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 21:24:59,301 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:24:59,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 21:24:59,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-15 21:24:59,302 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 10 states. [2019-11-15 21:24:59,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:24:59,377 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2019-11-15 21:24:59,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 21:24:59,378 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-11-15 21:24:59,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:24:59,379 INFO L225 Difference]: With dead ends: 28 [2019-11-15 21:24:59,379 INFO L226 Difference]: Without dead ends: 27 [2019-11-15 21:24:59,380 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-11-15 21:24:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-15 21:24:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-11-15 21:24:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 21:24:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-15 21:24:59,384 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2019-11-15 21:24:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:24:59,384 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-15 21:24:59,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 21:24:59,384 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-15 21:24:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-15 21:24:59,385 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:24:59,385 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2019-11-15 21:24:59,586 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:24:59,586 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:24:59,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:24:59,586 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2019-11-15 21:24:59,587 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:24:59,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789071349] [2019-11-15 21:24:59,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:59,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:24:59,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:24:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:24:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:24:59,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789071349] [2019-11-15 21:24:59,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790852746] [2019-11-15 21:24:59,719 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:24:59,758 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 21:24:59,758 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:24:59,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 21:24:59,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:24:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:24:59,768 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:24:59,768 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-15 21:24:59,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949558133] [2019-11-15 21:24:59,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 21:24:59,769 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:24:59,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 21:24:59,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-15 21:24:59,770 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 12 states. [2019-11-15 21:24:59,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:24:59,897 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2019-11-15 21:24:59,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 21:24:59,898 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2019-11-15 21:24:59,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:24:59,898 INFO L225 Difference]: With dead ends: 33 [2019-11-15 21:24:59,899 INFO L226 Difference]: Without dead ends: 32 [2019-11-15 21:24:59,899 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2019-11-15 21:24:59,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-15 21:24:59,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-11-15 21:24:59,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 21:24:59,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2019-11-15 21:24:59,904 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2019-11-15 21:24:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:24:59,907 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2019-11-15 21:24:59,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 21:24:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2019-11-15 21:24:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-15 21:24:59,909 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:24:59,909 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2019-11-15 21:25:00,113 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:00,114 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:00,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:00,114 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2019-11-15 21:25:00,114 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:00,115 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490706994] [2019-11-15 21:25:00,115 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:00,116 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:00,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:00,354 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490706994] [2019-11-15 21:25:00,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543723816] [2019-11-15 21:25:00,355 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:00,405 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-15 21:25:00,405 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:00,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-15 21:25:00,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:00,426 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:00,426 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-15 21:25:00,426 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328436112] [2019-11-15 21:25:00,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 21:25:00,427 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:00,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 21:25:00,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-11-15 21:25:00,428 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 14 states. [2019-11-15 21:25:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:00,578 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2019-11-15 21:25:00,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 21:25:00,579 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2019-11-15 21:25:00,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:00,580 INFO L225 Difference]: With dead ends: 38 [2019-11-15 21:25:00,580 INFO L226 Difference]: Without dead ends: 37 [2019-11-15 21:25:00,580 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2019-11-15 21:25:00,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-15 21:25:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-11-15 21:25:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-15 21:25:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2019-11-15 21:25:00,586 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2019-11-15 21:25:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:00,586 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2019-11-15 21:25:00,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 21:25:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2019-11-15 21:25:00,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-15 21:25:00,588 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:00,588 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2019-11-15 21:25:00,792 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:00,793 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:00,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:00,793 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2019-11-15 21:25:00,794 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:00,800 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734240677] [2019-11-15 21:25:00,800 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:00,800 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:00,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:00,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734240677] [2019-11-15 21:25:00,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542652138] [2019-11-15 21:25:00,991 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:01,037 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-15 21:25:01,037 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:01,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-15 21:25:01,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:01,064 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:01,065 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-15 21:25:01,065 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175018241] [2019-11-15 21:25:01,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 21:25:01,066 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:01,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 21:25:01,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-11-15 21:25:01,066 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 16 states. [2019-11-15 21:25:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:01,227 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2019-11-15 21:25:01,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-15 21:25:01,228 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2019-11-15 21:25:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:01,229 INFO L225 Difference]: With dead ends: 43 [2019-11-15 21:25:01,229 INFO L226 Difference]: Without dead ends: 42 [2019-11-15 21:25:01,229 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2019-11-15 21:25:01,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-15 21:25:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-11-15 21:25:01,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-15 21:25:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2019-11-15 21:25:01,234 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2019-11-15 21:25:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:01,234 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2019-11-15 21:25:01,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 21:25:01,234 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2019-11-15 21:25:01,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-15 21:25:01,240 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:01,241 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2019-11-15 21:25:01,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:01,444 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:01,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:01,444 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2019-11-15 21:25:01,444 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:01,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351418440] [2019-11-15 21:25:01,444 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:01,444 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:01,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:01,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351418440] [2019-11-15 21:25:01,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453779508] [2019-11-15 21:25:01,684 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:01,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-15 21:25:01,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:01,746 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:01,746 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:01,746 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-15 21:25:01,746 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892610957] [2019-11-15 21:25:01,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 21:25:01,747 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:01,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 21:25:01,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-11-15 21:25:01,748 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 18 states. [2019-11-15 21:25:01,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:01,950 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2019-11-15 21:25:01,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-15 21:25:01,950 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2019-11-15 21:25:01,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:01,951 INFO L225 Difference]: With dead ends: 48 [2019-11-15 21:25:01,951 INFO L226 Difference]: Without dead ends: 47 [2019-11-15 21:25:01,952 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2019-11-15 21:25:01,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-15 21:25:01,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-11-15 21:25:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-15 21:25:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2019-11-15 21:25:01,959 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 40 [2019-11-15 21:25:01,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:01,960 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2019-11-15 21:25:01,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 21:25:01,960 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2019-11-15 21:25:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-15 21:25:01,961 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:01,961 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2019-11-15 21:25:02,164 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:02,165 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:02,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:02,165 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2019-11-15 21:25:02,165 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:02,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097273099] [2019-11-15 21:25:02,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:02,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:02,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:02,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097273099] [2019-11-15 21:25:02,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100926682] [2019-11-15 21:25:02,389 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:02,449 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:25:02,449 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:02,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-15 21:25:02,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:02,465 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:02,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-15 21:25:02,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86544772] [2019-11-15 21:25:02,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-15 21:25:02,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:02,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-15 21:25:02,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-11-15 21:25:02,469 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 20 states. [2019-11-15 21:25:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:02,663 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2019-11-15 21:25:02,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-15 21:25:02,663 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 45 [2019-11-15 21:25:02,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:02,664 INFO L225 Difference]: With dead ends: 53 [2019-11-15 21:25:02,664 INFO L226 Difference]: Without dead ends: 52 [2019-11-15 21:25:02,665 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2019-11-15 21:25:02,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-15 21:25:02,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2019-11-15 21:25:02,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-15 21:25:02,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2019-11-15 21:25:02,670 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 45 [2019-11-15 21:25:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:02,670 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2019-11-15 21:25:02,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-15 21:25:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2019-11-15 21:25:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-15 21:25:02,671 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:02,671 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2019-11-15 21:25:02,872 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:02,872 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:02,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2019-11-15 21:25:02,873 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:02,873 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264401440] [2019-11-15 21:25:02,873 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:02,873 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:02,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:03,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264401440] [2019-11-15 21:25:03,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733179970] [2019-11-15 21:25:03,152 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:03,200 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-15 21:25:03,200 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:03,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-15 21:25:03,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:03,215 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:03,216 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-11-15 21:25:03,216 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492471477] [2019-11-15 21:25:03,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-15 21:25:03,217 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:03,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-15 21:25:03,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-11-15 21:25:03,217 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 22 states. [2019-11-15 21:25:03,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:03,432 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2019-11-15 21:25:03,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-15 21:25:03,432 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 50 [2019-11-15 21:25:03,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:03,433 INFO L225 Difference]: With dead ends: 58 [2019-11-15 21:25:03,433 INFO L226 Difference]: Without dead ends: 57 [2019-11-15 21:25:03,434 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2019-11-15 21:25:03,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-15 21:25:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2019-11-15 21:25:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-15 21:25:03,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2019-11-15 21:25:03,439 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 50 [2019-11-15 21:25:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:03,439 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2019-11-15 21:25:03,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-15 21:25:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2019-11-15 21:25:03,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-15 21:25:03,440 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:03,440 INFO L380 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2019-11-15 21:25:03,648 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:03,649 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:03,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:03,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2019-11-15 21:25:03,649 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:03,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931912399] [2019-11-15 21:25:03,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:03,650 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:03,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:03,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931912399] [2019-11-15 21:25:03,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091279777] [2019-11-15 21:25:03,916 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:03,959 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 21:25:03,959 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:03,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-15 21:25:03,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:03,976 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:03,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2019-11-15 21:25:03,977 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54846986] [2019-11-15 21:25:03,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-15 21:25:03,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:03,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-15 21:25:03,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-11-15 21:25:03,978 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 24 states. [2019-11-15 21:25:04,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:04,202 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2019-11-15 21:25:04,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-15 21:25:04,203 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2019-11-15 21:25:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:04,203 INFO L225 Difference]: With dead ends: 63 [2019-11-15 21:25:04,203 INFO L226 Difference]: Without dead ends: 62 [2019-11-15 21:25:04,204 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=364, Invalid=826, Unknown=0, NotChecked=0, Total=1190 [2019-11-15 21:25:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-15 21:25:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2019-11-15 21:25:04,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-15 21:25:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2019-11-15 21:25:04,209 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 55 [2019-11-15 21:25:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:04,210 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2019-11-15 21:25:04,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-15 21:25:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2019-11-15 21:25:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-15 21:25:04,211 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:04,211 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2019-11-15 21:25:04,411 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:04,412 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:04,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:04,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2019-11-15 21:25:04,412 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:04,413 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25601030] [2019-11-15 21:25:04,413 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:04,413 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:04,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:04,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25601030] [2019-11-15 21:25:04,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853089731] [2019-11-15 21:25:04,726 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:04,799 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-15 21:25:04,799 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:04,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-15 21:25:04,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:04,818 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:04,818 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2019-11-15 21:25:04,818 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630680169] [2019-11-15 21:25:04,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-15 21:25:04,819 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:04,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-15 21:25:04,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-11-15 21:25:04,820 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 26 states. [2019-11-15 21:25:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:05,089 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2019-11-15 21:25:05,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-15 21:25:05,090 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2019-11-15 21:25:05,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:05,091 INFO L225 Difference]: With dead ends: 68 [2019-11-15 21:25:05,091 INFO L226 Difference]: Without dead ends: 67 [2019-11-15 21:25:05,091 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2019-11-15 21:25:05,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-15 21:25:05,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2019-11-15 21:25:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-15 21:25:05,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2019-11-15 21:25:05,096 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 60 [2019-11-15 21:25:05,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:05,097 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2019-11-15 21:25:05,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-15 21:25:05,097 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2019-11-15 21:25:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-15 21:25:05,099 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:05,100 INFO L380 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2019-11-15 21:25:05,300 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:05,300 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:05,301 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2019-11-15 21:25:05,301 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:05,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081303349] [2019-11-15 21:25:05,301 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:05,301 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:05,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:05,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081303349] [2019-11-15 21:25:05,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647887481] [2019-11-15 21:25:05,696 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:05,780 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-15 21:25:05,780 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:05,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-15 21:25:05,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:05,813 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:05,813 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2019-11-15 21:25:05,813 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949735543] [2019-11-15 21:25:05,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-15 21:25:05,815 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:05,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-15 21:25:05,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2019-11-15 21:25:05,816 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 28 states. [2019-11-15 21:25:06,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:06,161 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2019-11-15 21:25:06,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-15 21:25:06,161 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 65 [2019-11-15 21:25:06,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:06,162 INFO L225 Difference]: With dead ends: 73 [2019-11-15 21:25:06,162 INFO L226 Difference]: Without dead ends: 72 [2019-11-15 21:25:06,163 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=495, Invalid=1145, Unknown=0, NotChecked=0, Total=1640 [2019-11-15 21:25:06,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-15 21:25:06,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2019-11-15 21:25:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-15 21:25:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2019-11-15 21:25:06,168 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 65 [2019-11-15 21:25:06,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:06,168 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2019-11-15 21:25:06,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-15 21:25:06,168 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2019-11-15 21:25:06,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-15 21:25:06,177 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:06,177 INFO L380 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2019-11-15 21:25:06,381 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:06,381 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:06,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:06,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2019-11-15 21:25:06,382 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:06,382 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301999842] [2019-11-15 21:25:06,382 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:06,382 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:06,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:06,812 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:06,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301999842] [2019-11-15 21:25:06,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9507403] [2019-11-15 21:25:06,813 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:06,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-15 21:25:06,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:06,890 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:06,890 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2019-11-15 21:25:06,890 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409876030] [2019-11-15 21:25:06,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-15 21:25:06,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:06,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-15 21:25:06,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2019-11-15 21:25:06,892 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 30 states. [2019-11-15 21:25:07,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:07,199 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2019-11-15 21:25:07,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-15 21:25:07,200 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2019-11-15 21:25:07,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:07,201 INFO L225 Difference]: With dead ends: 78 [2019-11-15 21:25:07,201 INFO L226 Difference]: Without dead ends: 77 [2019-11-15 21:25:07,202 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2019-11-15 21:25:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-11-15 21:25:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2019-11-15 21:25:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-15 21:25:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2019-11-15 21:25:07,208 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 70 [2019-11-15 21:25:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:07,208 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2019-11-15 21:25:07,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-15 21:25:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2019-11-15 21:25:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-15 21:25:07,209 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:07,209 INFO L380 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2019-11-15 21:25:07,412 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:07,413 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:07,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:07,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2019-11-15 21:25:07,413 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:07,413 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58873038] [2019-11-15 21:25:07,413 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:07,413 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:07,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:07,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58873038] [2019-11-15 21:25:07,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151390745] [2019-11-15 21:25:07,815 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:07,872 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:25:07,872 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:07,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-15 21:25:07,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:07,891 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:07,892 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2019-11-15 21:25:07,892 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730910674] [2019-11-15 21:25:07,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-11-15 21:25:07,892 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:07,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-11-15 21:25:07,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2019-11-15 21:25:07,893 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 32 states. [2019-11-15 21:25:08,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:08,201 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2019-11-15 21:25:08,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-15 21:25:08,201 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 75 [2019-11-15 21:25:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:08,202 INFO L225 Difference]: With dead ends: 83 [2019-11-15 21:25:08,202 INFO L226 Difference]: Without dead ends: 82 [2019-11-15 21:25:08,203 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=646, Invalid=1516, Unknown=0, NotChecked=0, Total=2162 [2019-11-15 21:25:08,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-15 21:25:08,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2019-11-15 21:25:08,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-15 21:25:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2019-11-15 21:25:08,213 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 75 [2019-11-15 21:25:08,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:08,213 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2019-11-15 21:25:08,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-11-15 21:25:08,213 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2019-11-15 21:25:08,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-15 21:25:08,216 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:08,216 INFO L380 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2019-11-15 21:25:08,416 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:08,417 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:08,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:08,417 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2019-11-15 21:25:08,417 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:08,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058806247] [2019-11-15 21:25:08,418 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:08,418 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:08,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:08,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058806247] [2019-11-15 21:25:08,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417514350] [2019-11-15 21:25:08,939 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:09,027 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-15 21:25:09,027 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:09,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-15 21:25:09,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:09,046 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:09,047 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2019-11-15 21:25:09,047 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488418721] [2019-11-15 21:25:09,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-15 21:25:09,047 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:09,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-15 21:25:09,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2019-11-15 21:25:09,048 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 34 states. [2019-11-15 21:25:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:09,461 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2019-11-15 21:25:09,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-15 21:25:09,462 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 80 [2019-11-15 21:25:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:09,463 INFO L225 Difference]: With dead ends: 88 [2019-11-15 21:25:09,463 INFO L226 Difference]: Without dead ends: 87 [2019-11-15 21:25:09,464 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2019-11-15 21:25:09,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-11-15 21:25:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2019-11-15 21:25:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-15 21:25:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2019-11-15 21:25:09,475 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 80 [2019-11-15 21:25:09,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:09,475 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2019-11-15 21:25:09,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-15 21:25:09,479 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2019-11-15 21:25:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-15 21:25:09,480 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:09,480 INFO L380 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2019-11-15 21:25:09,684 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:09,685 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:09,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:09,685 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2019-11-15 21:25:09,685 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:09,685 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471280862] [2019-11-15 21:25:09,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:09,686 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:09,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:10,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471280862] [2019-11-15 21:25:10,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185902060] [2019-11-15 21:25:10,194 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:10,269 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 21:25:10,269 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:10,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-15 21:25:10,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:10,301 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:10,301 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2019-11-15 21:25:10,301 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585079861] [2019-11-15 21:25:10,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-15 21:25:10,302 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:10,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-15 21:25:10,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2019-11-15 21:25:10,303 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 36 states. [2019-11-15 21:25:10,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:10,770 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2019-11-15 21:25:10,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-15 21:25:10,771 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 85 [2019-11-15 21:25:10,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:10,772 INFO L225 Difference]: With dead ends: 93 [2019-11-15 21:25:10,772 INFO L226 Difference]: Without dead ends: 92 [2019-11-15 21:25:10,773 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=817, Invalid=1939, Unknown=0, NotChecked=0, Total=2756 [2019-11-15 21:25:10,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-15 21:25:10,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2019-11-15 21:25:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-15 21:25:10,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2019-11-15 21:25:10,776 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 85 [2019-11-15 21:25:10,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:10,778 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2019-11-15 21:25:10,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-15 21:25:10,778 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2019-11-15 21:25:10,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-15 21:25:10,779 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:10,779 INFO L380 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2019-11-15 21:25:10,983 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:10,983 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:10,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:10,983 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2019-11-15 21:25:10,983 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:10,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749216853] [2019-11-15 21:25:10,983 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:10,983 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:10,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:11,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749216853] [2019-11-15 21:25:11,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390352216] [2019-11-15 21:25:11,612 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:11,746 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-15 21:25:11,747 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:11,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-15 21:25:11,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:11,768 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:11,768 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2019-11-15 21:25:11,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76729502] [2019-11-15 21:25:11,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-15 21:25:11,769 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:11,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-15 21:25:11,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2019-11-15 21:25:11,770 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 38 states. [2019-11-15 21:25:12,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:12,232 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2019-11-15 21:25:12,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-15 21:25:12,232 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 90 [2019-11-15 21:25:12,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:12,233 INFO L225 Difference]: With dead ends: 98 [2019-11-15 21:25:12,233 INFO L226 Difference]: Without dead ends: 97 [2019-11-15 21:25:12,234 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2019-11-15 21:25:12,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-11-15 21:25:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2019-11-15 21:25:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-11-15 21:25:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2019-11-15 21:25:12,238 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 90 [2019-11-15 21:25:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:12,238 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2019-11-15 21:25:12,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-15 21:25:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2019-11-15 21:25:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-15 21:25:12,239 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:12,239 INFO L380 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2019-11-15 21:25:12,445 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:12,445 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:12,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:12,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2019-11-15 21:25:12,445 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:12,445 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617982287] [2019-11-15 21:25:12,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:12,446 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:12,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:13,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617982287] [2019-11-15 21:25:13,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200924759] [2019-11-15 21:25:13,165 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:13,284 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-15 21:25:13,284 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:13,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 39 conjunts are in the unsatisfiable core [2019-11-15 21:25:13,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:13,306 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:13,307 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2019-11-15 21:25:13,307 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036469757] [2019-11-15 21:25:13,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-15 21:25:13,307 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:13,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-15 21:25:13,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2019-11-15 21:25:13,309 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 40 states. [2019-11-15 21:25:13,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:13,847 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2019-11-15 21:25:13,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-15 21:25:13,861 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 95 [2019-11-15 21:25:13,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:13,861 INFO L225 Difference]: With dead ends: 103 [2019-11-15 21:25:13,861 INFO L226 Difference]: Without dead ends: 102 [2019-11-15 21:25:13,862 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2019-11-15 21:25:13,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-11-15 21:25:13,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2019-11-15 21:25:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-15 21:25:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2019-11-15 21:25:13,865 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 95 [2019-11-15 21:25:13,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:13,865 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2019-11-15 21:25:13,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-15 21:25:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2019-11-15 21:25:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-15 21:25:13,866 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:13,866 INFO L380 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2019-11-15 21:25:14,066 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:14,067 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:14,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:14,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2019-11-15 21:25:14,067 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:14,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179076713] [2019-11-15 21:25:14,067 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:14,067 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:14,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:14,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179076713] [2019-11-15 21:25:14,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182450347] [2019-11-15 21:25:14,742 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:14,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-15 21:25:14,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:14,833 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:14,834 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2019-11-15 21:25:14,834 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629923481] [2019-11-15 21:25:14,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-11-15 21:25:14,834 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:14,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-11-15 21:25:14,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2019-11-15 21:25:14,836 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 42 states. [2019-11-15 21:25:15,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:15,289 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2019-11-15 21:25:15,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-15 21:25:15,291 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 100 [2019-11-15 21:25:15,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:15,291 INFO L225 Difference]: With dead ends: 108 [2019-11-15 21:25:15,291 INFO L226 Difference]: Without dead ends: 107 [2019-11-15 21:25:15,293 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1111, Invalid=2671, Unknown=0, NotChecked=0, Total=3782 [2019-11-15 21:25:15,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-11-15 21:25:15,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2019-11-15 21:25:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-15 21:25:15,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2019-11-15 21:25:15,296 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 100 [2019-11-15 21:25:15,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:15,296 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2019-11-15 21:25:15,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-11-15 21:25:15,297 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2019-11-15 21:25:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-15 21:25:15,297 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:15,298 INFO L380 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1] [2019-11-15 21:25:15,501 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:15,501 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:15,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:15,501 INFO L82 PathProgramCache]: Analyzing trace with hash -119266781, now seen corresponding path program 20 times [2019-11-15 21:25:15,502 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:15,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277145565] [2019-11-15 21:25:15,502 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:15,502 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:15,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:16,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277145565] [2019-11-15 21:25:16,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656123352] [2019-11-15 21:25:16,178 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:16,257 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:25:16,257 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:16,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 43 conjunts are in the unsatisfiable core [2019-11-15 21:25:16,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:16,281 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:16,281 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2019-11-15 21:25:16,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938677520] [2019-11-15 21:25:16,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-11-15 21:25:16,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:16,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-11-15 21:25:16,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2019-11-15 21:25:16,283 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 44 states. [2019-11-15 21:25:16,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:16,765 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2019-11-15 21:25:16,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-15 21:25:16,766 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 105 [2019-11-15 21:25:16,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:16,766 INFO L225 Difference]: With dead ends: 113 [2019-11-15 21:25:16,766 INFO L226 Difference]: Without dead ends: 112 [2019-11-15 21:25:16,768 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1219, Invalid=2941, Unknown=0, NotChecked=0, Total=4160 [2019-11-15 21:25:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-15 21:25:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2019-11-15 21:25:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-15 21:25:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2019-11-15 21:25:16,771 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 105 [2019-11-15 21:25:16,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:16,771 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2019-11-15 21:25:16,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-11-15 21:25:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2019-11-15 21:25:16,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-15 21:25:16,772 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:16,772 INFO L380 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1] [2019-11-15 21:25:16,973 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:16,973 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:16,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:16,973 INFO L82 PathProgramCache]: Analyzing trace with hash 953284081, now seen corresponding path program 21 times [2019-11-15 21:25:16,973 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:16,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296996961] [2019-11-15 21:25:16,974 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:16,974 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:16,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:18,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296996961] [2019-11-15 21:25:18,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173847275] [2019-11-15 21:25:18,021 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:18,168 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-11-15 21:25:18,168 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:18,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-15 21:25:18,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:18,197 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:18,197 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2019-11-15 21:25:18,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536916308] [2019-11-15 21:25:18,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-11-15 21:25:18,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:18,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-11-15 21:25:18,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-11-15 21:25:18,199 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 46 states. [2019-11-15 21:25:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:18,841 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2019-11-15 21:25:18,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-11-15 21:25:18,842 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 110 [2019-11-15 21:25:18,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:18,843 INFO L225 Difference]: With dead ends: 118 [2019-11-15 21:25:18,843 INFO L226 Difference]: Without dead ends: 117 [2019-11-15 21:25:18,845 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2019-11-15 21:25:18,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-11-15 21:25:18,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2019-11-15 21:25:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-11-15 21:25:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2019-11-15 21:25:18,848 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 110 [2019-11-15 21:25:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:18,848 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2019-11-15 21:25:18,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-11-15 21:25:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2019-11-15 21:25:18,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-15 21:25:18,849 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:18,849 INFO L380 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2019-11-15 21:25:19,056 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:19,057 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:19,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:19,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 22 times [2019-11-15 21:25:19,057 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:19,057 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890873358] [2019-11-15 21:25:19,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:19,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:19,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:20,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890873358] [2019-11-15 21:25:20,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641945011] [2019-11-15 21:25:20,027 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:20,124 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 21:25:20,124 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:20,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-15 21:25:20,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:20,150 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:20,151 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2019-11-15 21:25:20,151 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188200359] [2019-11-15 21:25:20,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-11-15 21:25:20,151 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:20,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-11-15 21:25:20,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-11-15 21:25:20,153 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 48 states. [2019-11-15 21:25:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:20,813 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2019-11-15 21:25:20,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-11-15 21:25:20,814 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 115 [2019-11-15 21:25:20,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:20,815 INFO L225 Difference]: With dead ends: 123 [2019-11-15 21:25:20,815 INFO L226 Difference]: Without dead ends: 122 [2019-11-15 21:25:20,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1450, Invalid=3520, Unknown=0, NotChecked=0, Total=4970 [2019-11-15 21:25:20,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-11-15 21:25:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2019-11-15 21:25:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-11-15 21:25:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2019-11-15 21:25:20,819 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 115 [2019-11-15 21:25:20,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:20,819 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2019-11-15 21:25:20,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-11-15 21:25:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2019-11-15 21:25:20,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-15 21:25:20,819 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:20,820 INFO L380 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1] [2019-11-15 21:25:21,020 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:21,020 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:21,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:21,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1642054351, now seen corresponding path program 23 times [2019-11-15 21:25:21,021 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:21,021 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653350675] [2019-11-15 21:25:21,021 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:21,021 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:21,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:21,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653350675] [2019-11-15 21:25:21,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777310293] [2019-11-15 21:25:21,880 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:22,042 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-11-15 21:25:22,043 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:22,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-15 21:25:22,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:22,071 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:22,072 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2019-11-15 21:25:22,072 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419329497] [2019-11-15 21:25:22,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-11-15 21:25:22,072 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:22,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-11-15 21:25:22,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2019-11-15 21:25:22,074 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 50 states. [2019-11-15 21:25:22,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:22,655 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2019-11-15 21:25:22,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-11-15 21:25:22,655 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 120 [2019-11-15 21:25:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:22,656 INFO L225 Difference]: With dead ends: 128 [2019-11-15 21:25:22,656 INFO L226 Difference]: Without dead ends: 127 [2019-11-15 21:25:22,657 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1573, Invalid=3829, Unknown=0, NotChecked=0, Total=5402 [2019-11-15 21:25:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-11-15 21:25:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2019-11-15 21:25:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-11-15 21:25:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2019-11-15 21:25:22,661 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 120 [2019-11-15 21:25:22,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:22,661 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2019-11-15 21:25:22,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-11-15 21:25:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2019-11-15 21:25:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-15 21:25:22,662 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:22,662 INFO L380 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1] [2019-11-15 21:25:22,865 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:22,866 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:22,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:22,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1546480733, now seen corresponding path program 24 times [2019-11-15 21:25:22,866 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:22,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053084356] [2019-11-15 21:25:22,866 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:22,866 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:22,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:24,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053084356] [2019-11-15 21:25:24,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295481673] [2019-11-15 21:25:24,122 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:24,293 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2019-11-15 21:25:24,293 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:24,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 51 conjunts are in the unsatisfiable core [2019-11-15 21:25:24,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:24,327 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:24,327 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2019-11-15 21:25:24,327 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513451476] [2019-11-15 21:25:24,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-11-15 21:25:24,328 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:24,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-11-15 21:25:24,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2019-11-15 21:25:24,329 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 52 states. [2019-11-15 21:25:24,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:24,961 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2019-11-15 21:25:24,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-11-15 21:25:24,961 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 125 [2019-11-15 21:25:24,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:24,962 INFO L225 Difference]: With dead ends: 133 [2019-11-15 21:25:24,962 INFO L226 Difference]: Without dead ends: 132 [2019-11-15 21:25:24,963 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1701, Invalid=4151, Unknown=0, NotChecked=0, Total=5852 [2019-11-15 21:25:24,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-11-15 21:25:24,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2019-11-15 21:25:24,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-15 21:25:24,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2019-11-15 21:25:24,966 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 125 [2019-11-15 21:25:24,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:24,966 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2019-11-15 21:25:24,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-11-15 21:25:24,966 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2019-11-15 21:25:24,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-15 21:25:24,966 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:24,966 INFO L380 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1] [2019-11-15 21:25:25,167 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:25,167 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:25,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:25,167 INFO L82 PathProgramCache]: Analyzing trace with hash -525437839, now seen corresponding path program 25 times [2019-11-15 21:25:25,167 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:25,167 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539430415] [2019-11-15 21:25:25,167 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:25,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:25,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:26,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539430415] [2019-11-15 21:25:26,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656598292] [2019-11-15 21:25:26,156 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:26,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 53 conjunts are in the unsatisfiable core [2019-11-15 21:25:26,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:26,279 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:26,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2019-11-15 21:25:26,279 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982867278] [2019-11-15 21:25:26,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2019-11-15 21:25:26,280 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:26,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2019-11-15 21:25:26,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2019-11-15 21:25:26,281 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 54 states. [2019-11-15 21:25:26,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:26,973 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2019-11-15 21:25:26,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-11-15 21:25:26,973 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 130 [2019-11-15 21:25:26,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:26,974 INFO L225 Difference]: With dead ends: 138 [2019-11-15 21:25:26,974 INFO L226 Difference]: Without dead ends: 137 [2019-11-15 21:25:26,975 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1834, Invalid=4486, Unknown=0, NotChecked=0, Total=6320 [2019-11-15 21:25:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-11-15 21:25:26,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2019-11-15 21:25:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-11-15 21:25:26,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2019-11-15 21:25:26,978 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 130 [2019-11-15 21:25:26,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:26,979 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2019-11-15 21:25:26,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 54 states. [2019-11-15 21:25:26,979 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2019-11-15 21:25:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-15 21:25:26,979 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:26,980 INFO L380 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1] [2019-11-15 21:25:27,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:27,180 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:27,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:27,180 INFO L82 PathProgramCache]: Analyzing trace with hash 298116195, now seen corresponding path program 26 times [2019-11-15 21:25:27,181 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:27,181 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482489220] [2019-11-15 21:25:27,181 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:27,181 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:27,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:28,190 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482489220] [2019-11-15 21:25:28,190 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669999054] [2019-11-15 21:25:28,190 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:28,295 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 21:25:28,295 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:28,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 55 conjunts are in the unsatisfiable core [2019-11-15 21:25:28,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:28,327 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:28,328 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2019-11-15 21:25:28,328 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740692916] [2019-11-15 21:25:28,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 56 states [2019-11-15 21:25:28,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:28,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2019-11-15 21:25:28,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2019-11-15 21:25:28,329 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 56 states. [2019-11-15 21:25:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:29,023 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2019-11-15 21:25:29,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-11-15 21:25:29,023 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 135 [2019-11-15 21:25:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:29,024 INFO L225 Difference]: With dead ends: 143 [2019-11-15 21:25:29,024 INFO L226 Difference]: Without dead ends: 142 [2019-11-15 21:25:29,025 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1972, Invalid=4834, Unknown=0, NotChecked=0, Total=6806 [2019-11-15 21:25:29,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-15 21:25:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2019-11-15 21:25:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-11-15 21:25:29,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2019-11-15 21:25:29,029 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 135 [2019-11-15 21:25:29,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:29,029 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2019-11-15 21:25:29,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 56 states. [2019-11-15 21:25:29,029 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2019-11-15 21:25:29,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-15 21:25:29,030 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:29,030 INFO L380 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1] [2019-11-15 21:25:29,230 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:29,231 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:29,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:29,231 INFO L82 PathProgramCache]: Analyzing trace with hash 626039729, now seen corresponding path program 27 times [2019-11-15 21:25:29,231 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:29,231 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290054845] [2019-11-15 21:25:29,231 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:29,231 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:29,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:30,312 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290054845] [2019-11-15 21:25:30,312 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347428302] [2019-11-15 21:25:30,312 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:30,495 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2019-11-15 21:25:30,495 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:30,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 57 conjunts are in the unsatisfiable core [2019-11-15 21:25:30,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:30,529 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:30,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2019-11-15 21:25:30,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217429623] [2019-11-15 21:25:30,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 58 states [2019-11-15 21:25:30,530 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:30,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2019-11-15 21:25:30,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2019-11-15 21:25:30,531 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 58 states. [2019-11-15 21:25:31,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:31,348 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2019-11-15 21:25:31,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-11-15 21:25:31,348 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 140 [2019-11-15 21:25:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:31,349 INFO L225 Difference]: With dead ends: 148 [2019-11-15 21:25:31,349 INFO L226 Difference]: Without dead ends: 147 [2019-11-15 21:25:31,350 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2115, Invalid=5195, Unknown=0, NotChecked=0, Total=7310 [2019-11-15 21:25:31,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-11-15 21:25:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2019-11-15 21:25:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-15 21:25:31,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2019-11-15 21:25:31,352 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 140 [2019-11-15 21:25:31,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:31,353 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2019-11-15 21:25:31,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 58 states. [2019-11-15 21:25:31,353 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2019-11-15 21:25:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-15 21:25:31,353 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:31,354 INFO L380 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1] [2019-11-15 21:25:31,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:31,557 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:31,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:31,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1553548579, now seen corresponding path program 28 times [2019-11-15 21:25:31,558 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:31,558 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420014900] [2019-11-15 21:25:31,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:31,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:31,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:32,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420014900] [2019-11-15 21:25:32,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979716375] [2019-11-15 21:25:32,754 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:32,881 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 21:25:32,881 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:32,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 59 conjunts are in the unsatisfiable core [2019-11-15 21:25:32,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:32,918 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:32,919 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2019-11-15 21:25:32,919 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049878108] [2019-11-15 21:25:32,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2019-11-15 21:25:32,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:32,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2019-11-15 21:25:32,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2019-11-15 21:25:32,920 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 60 states. [2019-11-15 21:25:33,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:33,814 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2019-11-15 21:25:33,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-11-15 21:25:33,814 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 145 [2019-11-15 21:25:33,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:33,815 INFO L225 Difference]: With dead ends: 153 [2019-11-15 21:25:33,815 INFO L226 Difference]: Without dead ends: 152 [2019-11-15 21:25:33,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2263, Invalid=5569, Unknown=0, NotChecked=0, Total=7832 [2019-11-15 21:25:33,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-15 21:25:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2019-11-15 21:25:33,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-11-15 21:25:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2019-11-15 21:25:33,820 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 145 [2019-11-15 21:25:33,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:33,821 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2019-11-15 21:25:33,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 60 states. [2019-11-15 21:25:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2019-11-15 21:25:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-15 21:25:33,822 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:33,822 INFO L380 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1] [2019-11-15 21:25:34,022 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:34,023 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:34,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:34,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1747275023, now seen corresponding path program 29 times [2019-11-15 21:25:34,023 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:34,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486450420] [2019-11-15 21:25:34,023 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:34,023 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:34,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:35,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486450420] [2019-11-15 21:25:35,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010587877] [2019-11-15 21:25:35,674 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:35,948 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-11-15 21:25:35,948 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:35,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 61 conjunts are in the unsatisfiable core [2019-11-15 21:25:35,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:35,988 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:35,988 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2019-11-15 21:25:35,988 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556931446] [2019-11-15 21:25:35,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 62 states [2019-11-15 21:25:35,989 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:35,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2019-11-15 21:25:35,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2019-11-15 21:25:35,990 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 62 states. [2019-11-15 21:25:36,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:36,783 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2019-11-15 21:25:36,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-11-15 21:25:36,783 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 150 [2019-11-15 21:25:36,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:36,784 INFO L225 Difference]: With dead ends: 158 [2019-11-15 21:25:36,784 INFO L226 Difference]: Without dead ends: 157 [2019-11-15 21:25:36,785 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2019-11-15 21:25:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-11-15 21:25:36,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2019-11-15 21:25:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-11-15 21:25:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2019-11-15 21:25:36,790 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 150 [2019-11-15 21:25:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:36,790 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2019-11-15 21:25:36,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 62 states. [2019-11-15 21:25:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2019-11-15 21:25:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-15 21:25:36,791 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:25:36,791 INFO L380 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1] [2019-11-15 21:25:36,991 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:36,992 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 21:25:36,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:25:36,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1661225501, now seen corresponding path program 30 times [2019-11-15 21:25:36,992 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:25:36,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129059555] [2019-11-15 21:25:36,992 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:36,992 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:25:36,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:25:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:25:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 1 proven. 2294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:43,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129059555] [2019-11-15 21:25:43,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952634215] [2019-11-15 21:25:43,081 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:25:43,304 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2019-11-15 21:25:43,304 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 21:25:43,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 63 conjunts are in the unsatisfiable core [2019-11-15 21:25:43,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:25:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:25:48,610 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:25:48,611 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 62] total 183 [2019-11-15 21:25:48,611 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203829990] [2019-11-15 21:25:48,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 185 states [2019-11-15 21:25:48,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:25:48,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2019-11-15 21:25:48,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2321, Invalid=31719, Unknown=0, NotChecked=0, Total=34040 [2019-11-15 21:25:48,613 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 185 states. [2019-11-15 21:25:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:25:59,819 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2019-11-15 21:25:59,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2019-11-15 21:25:59,819 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 155 [2019-11-15 21:25:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:25:59,820 INFO L225 Difference]: With dead ends: 156 [2019-11-15 21:25:59,820 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 21:25:59,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23314 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=5110, Invalid=70790, Unknown=0, NotChecked=0, Total=75900 [2019-11-15 21:25:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 21:25:59,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 21:25:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 21:25:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 21:25:59,823 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2019-11-15 21:25:59,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:25:59,823 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:25:59,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 185 states. [2019-11-15 21:25:59,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 21:25:59,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 21:26:00,024 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 21:26:00,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 21:26:00,777 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 108 [2019-11-15 21:26:00,781 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2019-11-15 21:26:00,781 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 21:26:00,781 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2019-11-15 21:26:00,781 INFO L439 ceAbstractionStarter]: At program point L19(lines 18 20) the Hoare annotation is: (<= ULTIMATE.start_mlog_~x 2147483647) [2019-11-15 21:26:00,782 INFO L443 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2019-11-15 21:26:00,782 INFO L443 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-11-15 21:26:00,782 INFO L439 ceAbstractionStarter]: At program point L7-2(lines 7 12) the Hoare annotation is: (let ((.cse1 (div ULTIMATE.start_mlog_~x 2)) (.cse0 (< 0 (+ ULTIMATE.start_mlog_~x 1))) (.cse2 (<= 0 ULTIMATE.start_mlog_~res~0))) (or (and .cse0 (<= (+ .cse1 ULTIMATE.start_mlog_~res~0) 30) .cse2) (and .cse2 (<= ULTIMATE.start_mlog_~res~0 0) (<= ULTIMATE.start_mlog_~x 2147483647)) (and .cse0 (<= (+ .cse1 (* 16777216 ULTIMATE.start_mlog_~res~0)) 117440511) .cse2) (and .cse0 (<= (+ .cse1 (* 256 ULTIMATE.start_mlog_~res~0)) 5887) .cse2) (and (<= (+ .cse1 (* 16 ULTIMATE.start_mlog_~res~0)) 431) .cse0 .cse2) (and .cse0 (<= (+ .cse1 (* 8192 ULTIMATE.start_mlog_~res~0)) 147455) .cse2) (and .cse0 .cse2 (<= (+ .cse1 (* 4194304 ULTIMATE.start_mlog_~res~0)) 37748735)) (and .cse0 .cse2 (<= (+ .cse1 (* 524288 ULTIMATE.start_mlog_~res~0)) 6291455)) (and .cse0 .cse2 (<= (+ .cse1 (* 67108864 ULTIMATE.start_mlog_~res~0)) 335544319)) (and (<= (+ .cse1 (* 131072 ULTIMATE.start_mlog_~res~0)) 1835007) .cse0 .cse2) (and .cse0 .cse2 (<= (+ .cse1 (* 2097152 ULTIMATE.start_mlog_~res~0)) 20971519)) (and (<= (+ .cse1 (* 4 ULTIMATE.start_mlog_~res~0)) 115) .cse0 .cse2) (and .cse0 (<= (+ .cse1 (* 2048 ULTIMATE.start_mlog_~res~0)) 40959) .cse2) (and (<= (+ .cse1 (* 512 ULTIMATE.start_mlog_~res~0)) 11263) .cse0 .cse2) (and .cse0 .cse2 (<= (+ .cse1 (* 32768 ULTIMATE.start_mlog_~res~0)) 524287)) (and .cse0 (<= (+ .cse1 (* 268435456 ULTIMATE.start_mlog_~res~0)) 805306367) .cse2) (and (<= (+ .cse1 (* 64 ULTIMATE.start_mlog_~res~0)) 1599) .cse0 .cse2))) [2019-11-15 21:26:00,782 INFO L443 ceAbstractionStarter]: For program point L7-3(lines 7 12) no Hoare annotation was computed. [2019-11-15 21:26:00,782 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2019-11-15 21:26:00,782 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 21:26:00,783 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 21:26:00,783 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2019-11-15 21:26:00,783 INFO L439 ceAbstractionStarter]: At program point L14(lines 3 16) the Hoare annotation is: (<= ULTIMATE.start_mlog_~x 2147483647) [2019-11-15 21:26:00,783 INFO L443 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2019-11-15 21:26:00,783 INFO L443 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2019-11-15 21:26:00,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:26:00 BoogieIcfgContainer [2019-11-15 21:26:00,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:26:00,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:26:00,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:26:00,802 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:26:00,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:24:57" (3/4) ... [2019-11-15 21:26:00,805 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 21:26:00,814 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-15 21:26:00,814 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 21:26:00,848 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2596f124-532f-49ed-ad8f-92889e8f7f92/bin/uautomizer/witness.graphml [2019-11-15 21:26:00,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:26:00,850 INFO L168 Benchmark]: Toolchain (without parser) took 63758.09 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 498.1 MB). Free memory was 944.7 MB in the beginning and 914.3 MB in the end (delta: 30.5 MB). Peak memory consumption was 528.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:26:00,850 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:26:00,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:26:00,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:26:00,851 INFO L168 Benchmark]: Boogie Preprocessor took 19.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:26:00,852 INFO L168 Benchmark]: RCFGBuilder took 260.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:26:00,852 INFO L168 Benchmark]: TraceAbstraction took 63147.34 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 357.0 MB). Free memory was 1.1 GB in the beginning and 918.5 MB in the end (delta: 198.9 MB). Peak memory consumption was 555.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:26:00,852 INFO L168 Benchmark]: Witness Printer took 47.53 ms. Allocated memory is still 1.5 GB. Free memory was 918.5 MB in the beginning and 914.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. [2019-11-15 21:26:00,854 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 249.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 260.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 63147.34 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 357.0 MB). Free memory was 1.1 GB in the beginning and 918.5 MB in the end (delta: 198.9 MB). Peak memory consumption was 555.9 MB. Max. memory is 11.5 GB. * Witness Printer took 47.53 ms. Allocated memory is still 1.5 GB. Free memory was 918.5 MB in the beginning and 914.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (((((((((((((((((0 < x + 1 && x / 2 + res <= 30) && 0 <= res) || ((0 <= res && res <= 0) && x <= 2147483647)) || ((0 < x + 1 && x / 2 + 16777216 * res <= 117440511) && 0 <= res)) || ((0 < x + 1 && x / 2 + 256 * res <= 5887) && 0 <= res)) || ((x / 2 + 16 * res <= 431 && 0 < x + 1) && 0 <= res)) || ((0 < x + 1 && x / 2 + 8192 * res <= 147455) && 0 <= res)) || ((0 < x + 1 && 0 <= res) && x / 2 + 4194304 * res <= 37748735)) || ((0 < x + 1 && 0 <= res) && x / 2 + 524288 * res <= 6291455)) || ((0 < x + 1 && 0 <= res) && x / 2 + 67108864 * res <= 335544319)) || ((x / 2 + 131072 * res <= 1835007 && 0 < x + 1) && 0 <= res)) || ((0 < x + 1 && 0 <= res) && x / 2 + 2097152 * res <= 20971519)) || ((x / 2 + 4 * res <= 115 && 0 < x + 1) && 0 <= res)) || ((0 < x + 1 && x / 2 + 2048 * res <= 40959) && 0 <= res)) || ((x / 2 + 512 * res <= 11263 && 0 < x + 1) && 0 <= res)) || ((0 < x + 1 && 0 <= res) && x / 2 + 32768 * res <= 524287)) || ((0 < x + 1 && x / 2 + 268435456 * res <= 805306367) && 0 <= res)) || ((x / 2 + 64 * res <= 1599 && 0 < x + 1) && 0 <= res) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: SAFE, OverallTime: 63.0s, OverallIterations: 33, TraceHistogramMax: 31, AutomataDifference: 23.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, HoareTripleCheckerStatistics: 133 SDtfs, 2085 SDslu, 2101 SDs, 0 SdLazy, 15599 SolverSat, 327 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4059 GetRequests, 2385 SyntacticMatches, 0 SemanticMatches, 1674 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36364 ImplicationChecksByTransitivity, 40.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 33 MinimizatonAttempts, 31 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 303 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 700 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 28.1s InterpolantComputationTime, 4964 NumberOfCodeBlocks, 4964 NumberOfCodeBlocksAsserted, 323 NumberOfCheckSat, 4901 ConstructedInterpolants, 0 QuantifiedInterpolants, 1680097 SizeOfPredicates, 495 NumberOfNonLiveVariables, 5655 ConjunctsInSsa, 1020 ConjunctsInUnsatCore, 63 InterpolantComputations, 3 PerfectInterpolantSequences, 1/48670 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...