./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 cf39454d83b4ec00341bd0b620b0fa6b2321ce21 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:48:29,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:48:29,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:48:29,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:48:29,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:48:29,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:48:29,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:48:29,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:48:29,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:48:29,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:48:29,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:48:29,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:48:29,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:48:29,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:48:29,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:48:29,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:48:29,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:48:29,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:48:29,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:48:29,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:48:29,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:48:29,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:48:29,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:48:29,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:48:29,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:48:29,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:48:29,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:48:29,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:48:29,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:48:29,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:48:29,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:48:29,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:48:29,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:48:29,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:48:29,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:48:29,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:48:29,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:48:29,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:48:29,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:48:29,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:48:29,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:48:29,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-25 08:48:29,437 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:48:29,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:48:29,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:48:29,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:48:29,439 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:48:29,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:48:29,440 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:48:29,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:48:29,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:48:29,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:48:29,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:48:29,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:48:29,441 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-25 08:48:29,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:48:29,441 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:48:29,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:48:29,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:48:29,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:48:29,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:48:29,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:48:29,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:48:29,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:48:29,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:48:29,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:48:29,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:48:29,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:48:29,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:48:29,444 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_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 -> cf39454d83b4ec00341bd0b620b0fa6b2321ce21 [2019-11-25 08:48:29,600 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:48:29,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:48:29,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:48:29,616 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:48:29,616 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:48:29,617 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2019-11-25 08:48:29,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/bin/uautomizer/data/12e91fba4/cdc387f2ce0343f0be30b4415b79aecc/FLAG9340da516 [2019-11-25 08:48:30,044 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:48:30,045 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2019-11-25 08:48:30,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/bin/uautomizer/data/12e91fba4/cdc387f2ce0343f0be30b4415b79aecc/FLAG9340da516 [2019-11-25 08:48:30,470 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/bin/uautomizer/data/12e91fba4/cdc387f2ce0343f0be30b4415b79aecc [2019-11-25 08:48:30,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:48:30,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:48:30,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:30,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:48:30,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:48:30,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a8a89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30, skipping insertion in model container [2019-11-25 08:48:30,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:48:30,503 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:48:30,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:30,646 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:48:30,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:30,747 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:48:30,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30 WrapperNode [2019-11-25 08:48:30,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:30,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:30,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:48:30,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:48:30,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:30,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:48:30,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:48:30,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:48:30,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30" (1/1) ... [2019-11-25 08:48:30,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:48:30,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:48:30,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:48:30,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:48:30,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:30,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:48:30,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:48:30,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:48:30,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:48:30,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:48:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:48:31,023 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:48:31,023 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-25 08:48:31,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:31 BoogieIcfgContainer [2019-11-25 08:48:31,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:48:31,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:48:31,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:48:31,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:48:31,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:48:30" (1/3) ... [2019-11-25 08:48:31,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222576f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:31, skipping insertion in model container [2019-11-25 08:48:31,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:30" (2/3) ... [2019-11-25 08:48:31,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222576f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:48:31, skipping insertion in model container [2019-11-25 08:48:31,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:31" (3/3) ... [2019-11-25 08:48:31,030 INFO L109 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices-1.c [2019-11-25 08:48:31,038 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:48:31,044 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-25 08:48:31,054 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-25 08:48:31,075 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:48:31,075 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:48:31,075 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:48:31,075 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:48:31,075 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:48:31,075 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:48:31,075 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:48:31,076 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:48:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-25 08:48:31,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-25 08:48:31,095 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:31,096 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-25 08:48:31,096 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:31,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:31,101 INFO L82 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2019-11-25 08:48:31,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:31,109 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476468012] [2019-11-25 08:48:31,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:31,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476468012] [2019-11-25 08:48:31,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:31,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:48:31,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544210587] [2019-11-25 08:48:31,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:48:31,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:31,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:48:31,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:31,310 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-11-25 08:48:31,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:31,373 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-11-25 08:48:31,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:48:31,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-25 08:48:31,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:31,381 INFO L225 Difference]: With dead ends: 34 [2019-11-25 08:48:31,382 INFO L226 Difference]: Without dead ends: 18 [2019-11-25 08:48:31,384 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:31,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-25 08:48:31,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-25 08:48:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:48:31,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-25 08:48:31,410 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2019-11-25 08:48:31,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:31,410 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-25 08:48:31,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:48:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-25 08:48:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:48:31,411 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:31,411 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-25 08:48:31,412 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:31,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:31,412 INFO L82 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2019-11-25 08:48:31,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:31,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875753162] [2019-11-25 08:48:31,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:48:31,464 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875753162] [2019-11-25 08:48:31,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:31,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:48:31,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255774576] [2019-11-25 08:48:31,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:48:31,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:31,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:48:31,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:31,467 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2019-11-25 08:48:31,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:31,495 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-11-25 08:48:31,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:48:31,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-25 08:48:31,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:31,496 INFO L225 Difference]: With dead ends: 18 [2019-11-25 08:48:31,497 INFO L226 Difference]: Without dead ends: 17 [2019-11-25 08:48:31,497 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:31,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-25 08:48:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-25 08:48:31,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-25 08:48:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-11-25 08:48:31,501 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2019-11-25 08:48:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:31,502 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-11-25 08:48:31,502 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:48:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-11-25 08:48:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:48:31,503 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:31,503 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:31,503 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:31,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:31,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1607296535, now seen corresponding path program 1 times [2019-11-25 08:48:31,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:31,504 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782637413] [2019-11-25 08:48:31,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:31,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782637413] [2019-11-25 08:48:31,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137712834] [2019-11-25 08:48:31,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:31,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:48:31,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:31,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:31,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-25 08:48:31,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777368451] [2019-11-25 08:48:31,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:48:31,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:31,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:48:31,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:48:31,644 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2019-11-25 08:48:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:31,708 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2019-11-25 08:48:31,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:48:31,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-11-25 08:48:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:31,709 INFO L225 Difference]: With dead ends: 28 [2019-11-25 08:48:31,709 INFO L226 Difference]: Without dead ends: 22 [2019-11-25 08:48:31,710 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:48:31,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-25 08:48:31,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-11-25 08:48:31,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:48:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-25 08:48:31,714 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2019-11-25 08:48:31,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:31,715 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-25 08:48:31,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:48:31,715 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-25 08:48:31,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:48:31,715 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:31,715 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-25 08:48:31,916 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:31,916 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:31,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:31,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2019-11-25 08:48:31,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:31,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700923884] [2019-11-25 08:48:31,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:31,991 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700923884] [2019-11-25 08:48:31,992 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102093410] [2019-11-25 08:48:31,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:32,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:48:32,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:32,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:48:32,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2019-11-25 08:48:32,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227472132] [2019-11-25 08:48:32,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:48:32,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:32,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:48:32,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:48:32,055 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2019-11-25 08:48:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:32,100 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-11-25 08:48:32,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:48:32,100 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-25 08:48:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:32,101 INFO L225 Difference]: With dead ends: 18 [2019-11-25 08:48:32,101 INFO L226 Difference]: Without dead ends: 17 [2019-11-25 08:48:32,102 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:48:32,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-25 08:48:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-25 08:48:32,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-25 08:48:32,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-11-25 08:48:32,105 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2019-11-25 08:48:32,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:32,105 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-11-25 08:48:32,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:48:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-11-25 08:48:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:48:32,106 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:32,106 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:32,309 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:32,309 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:32,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:32,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1053474021, now seen corresponding path program 2 times [2019-11-25 08:48:32,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:32,310 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298153870] [2019-11-25 08:48:32,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:32,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298153870] [2019-11-25 08:48:32,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310968236] [2019-11-25 08:48:32,372 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:32,427 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:48:32,427 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:32,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:48:32,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:32,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:32,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-11-25 08:48:32,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575204437] [2019-11-25 08:48:32,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:48:32,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:32,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:48:32,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:48:32,463 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states. [2019-11-25 08:48:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:32,522 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-11-25 08:48:32,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:48:32,524 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2019-11-25 08:48:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:32,524 INFO L225 Difference]: With dead ends: 30 [2019-11-25 08:48:32,525 INFO L226 Difference]: Without dead ends: 24 [2019-11-25 08:48:32,525 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:48:32,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-25 08:48:32,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-11-25 08:48:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-25 08:48:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-11-25 08:48:32,529 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2019-11-25 08:48:32,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:32,529 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-11-25 08:48:32,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:48:32,529 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-11-25 08:48:32,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:48:32,530 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:32,530 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:32,735 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:32,735 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:32,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:32,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1100938783, now seen corresponding path program 3 times [2019-11-25 08:48:32,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:32,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572188796] [2019-11-25 08:48:32,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:32,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572188796] [2019-11-25 08:48:32,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142077170] [2019-11-25 08:48:32,858 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:32,897 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-25 08:48:32,897 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:32,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:48:32,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:32,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:32,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-11-25 08:48:32,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725714258] [2019-11-25 08:48:32,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-25 08:48:32,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:32,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:48:32,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:48:32,922 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2019-11-25 08:48:32,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:32,994 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-11-25 08:48:32,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:48:32,997 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2019-11-25 08:48:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:32,997 INFO L225 Difference]: With dead ends: 34 [2019-11-25 08:48:32,997 INFO L226 Difference]: Without dead ends: 28 [2019-11-25 08:48:32,998 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:48:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-25 08:48:33,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2019-11-25 08:48:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-25 08:48:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-11-25 08:48:33,002 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2019-11-25 08:48:33,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:33,002 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-11-25 08:48:33,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-25 08:48:33,002 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-11-25 08:48:33,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:48:33,003 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:33,003 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:33,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:33,206 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:33,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:33,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1326737629, now seen corresponding path program 4 times [2019-11-25 08:48:33,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:33,207 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317487923] [2019-11-25 08:48:33,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:33,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317487923] [2019-11-25 08:48:33,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853985042] [2019-11-25 08:48:33,328 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:33,368 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:48:33,368 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:33,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:48:33,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:33,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:33,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-11-25 08:48:33,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537604832] [2019-11-25 08:48:33,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:48:33,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:33,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:48:33,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:48:33,397 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 13 states. [2019-11-25 08:48:33,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:33,505 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2019-11-25 08:48:33,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:48:33,505 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2019-11-25 08:48:33,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:33,506 INFO L225 Difference]: With dead ends: 38 [2019-11-25 08:48:33,506 INFO L226 Difference]: Without dead ends: 32 [2019-11-25 08:48:33,507 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:48:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-25 08:48:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2019-11-25 08:48:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-25 08:48:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-11-25 08:48:33,511 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2019-11-25 08:48:33,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:33,512 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-11-25 08:48:33,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:48:33,512 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-11-25 08:48:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:48:33,515 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:33,515 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:33,718 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:33,719 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:33,719 INFO L82 PathProgramCache]: Analyzing trace with hash 108793383, now seen corresponding path program 5 times [2019-11-25 08:48:33,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:33,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751092536] [2019-11-25 08:48:33,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:33,864 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751092536] [2019-11-25 08:48:33,864 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983648732] [2019-11-25 08:48:33,864 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:33,906 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-25 08:48:33,907 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:33,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:48:33,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:33,947 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:33,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:33,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-11-25 08:48:33,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937743507] [2019-11-25 08:48:33,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-25 08:48:33,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:33,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-25 08:48:33,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:48:33,950 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 15 states. [2019-11-25 08:48:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:34,075 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2019-11-25 08:48:34,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-25 08:48:34,075 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 26 [2019-11-25 08:48:34,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:34,076 INFO L225 Difference]: With dead ends: 42 [2019-11-25 08:48:34,076 INFO L226 Difference]: Without dead ends: 36 [2019-11-25 08:48:34,077 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:48:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-25 08:48:34,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2019-11-25 08:48:34,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-25 08:48:34,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2019-11-25 08:48:34,081 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2019-11-25 08:48:34,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:34,082 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2019-11-25 08:48:34,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-25 08:48:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2019-11-25 08:48:34,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-25 08:48:34,083 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:34,083 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:34,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:34,287 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:34,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:34,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1590598869, now seen corresponding path program 6 times [2019-11-25 08:48:34,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:34,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330704423] [2019-11-25 08:48:34,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:34,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330704423] [2019-11-25 08:48:34,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000338514] [2019-11-25 08:48:34,462 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:34,506 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-25 08:48:34,506 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:34,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-25 08:48:34,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:34,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:34,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-11-25 08:48:34,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037876943] [2019-11-25 08:48:34,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-25 08:48:34,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:34,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-25 08:48:34,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:48:34,540 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 17 states. [2019-11-25 08:48:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:34,695 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2019-11-25 08:48:34,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-25 08:48:34,696 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2019-11-25 08:48:34,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:34,697 INFO L225 Difference]: With dead ends: 46 [2019-11-25 08:48:34,697 INFO L226 Difference]: Without dead ends: 40 [2019-11-25 08:48:34,698 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2019-11-25 08:48:34,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-25 08:48:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-11-25 08:48:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-25 08:48:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2019-11-25 08:48:34,702 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2019-11-25 08:48:34,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:34,707 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2019-11-25 08:48:34,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-25 08:48:34,707 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2019-11-25 08:48:34,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-25 08:48:34,709 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:34,710 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:34,913 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:34,913 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:34,914 INFO L82 PathProgramCache]: Analyzing trace with hash -2022926801, now seen corresponding path program 7 times [2019-11-25 08:48:34,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:34,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826630015] [2019-11-25 08:48:34,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:35,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826630015] [2019-11-25 08:48:35,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189084482] [2019-11-25 08:48:35,108 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:35,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-25 08:48:35,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:35,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:35,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-11-25 08:48:35,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551559964] [2019-11-25 08:48:35,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-25 08:48:35,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:35,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-25 08:48:35,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:48:35,193 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 19 states. [2019-11-25 08:48:35,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:35,331 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2019-11-25 08:48:35,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-25 08:48:35,331 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2019-11-25 08:48:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:35,332 INFO L225 Difference]: With dead ends: 50 [2019-11-25 08:48:35,332 INFO L226 Difference]: Without dead ends: 44 [2019-11-25 08:48:35,332 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2019-11-25 08:48:35,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-25 08:48:35,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2019-11-25 08:48:35,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-25 08:48:35,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2019-11-25 08:48:35,337 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 34 [2019-11-25 08:48:35,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:35,337 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2019-11-25 08:48:35,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-25 08:48:35,337 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2019-11-25 08:48:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:48:35,338 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:35,338 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:35,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:35,543 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:35,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:35,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1492211917, now seen corresponding path program 8 times [2019-11-25 08:48:35,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:35,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929087579] [2019-11-25 08:48:35,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:35,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929087579] [2019-11-25 08:48:35,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580022169] [2019-11-25 08:48:35,762 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:35,801 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:48:35,801 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:35,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-25 08:48:35,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:35,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:35,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-11-25 08:48:35,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315979089] [2019-11-25 08:48:35,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-25 08:48:35,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:35,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-25 08:48:35,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-11-25 08:48:35,864 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 21 states. [2019-11-25 08:48:36,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:36,050 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2019-11-25 08:48:36,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-25 08:48:36,051 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2019-11-25 08:48:36,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:36,052 INFO L225 Difference]: With dead ends: 54 [2019-11-25 08:48:36,052 INFO L226 Difference]: Without dead ends: 48 [2019-11-25 08:48:36,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2019-11-25 08:48:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-25 08:48:36,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2019-11-25 08:48:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-25 08:48:36,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2019-11-25 08:48:36,057 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 38 [2019-11-25 08:48:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:36,057 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2019-11-25 08:48:36,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-25 08:48:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2019-11-25 08:48:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-25 08:48:36,058 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:36,058 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:36,262 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:36,263 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:36,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:36,263 INFO L82 PathProgramCache]: Analyzing trace with hash 360224311, now seen corresponding path program 9 times [2019-11-25 08:48:36,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:36,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227212946] [2019-11-25 08:48:36,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:36,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227212946] [2019-11-25 08:48:36,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265543683] [2019-11-25 08:48:36,562 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:36,627 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-25 08:48:36,627 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:36,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-25 08:48:36,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:36,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:36,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-11-25 08:48:36,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140109338] [2019-11-25 08:48:36,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-25 08:48:36,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:36,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-25 08:48:36,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-11-25 08:48:36,661 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 23 states. [2019-11-25 08:48:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:36,841 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2019-11-25 08:48:36,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-25 08:48:36,842 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2019-11-25 08:48:36,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:36,842 INFO L225 Difference]: With dead ends: 58 [2019-11-25 08:48:36,843 INFO L226 Difference]: Without dead ends: 52 [2019-11-25 08:48:36,843 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2019-11-25 08:48:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-25 08:48:36,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2019-11-25 08:48:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-25 08:48:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2019-11-25 08:48:36,848 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 42 [2019-11-25 08:48:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:36,848 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2019-11-25 08:48:36,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-25 08:48:36,848 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2019-11-25 08:48:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-25 08:48:36,849 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:36,850 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:37,050 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:37,050 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:37,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1334534971, now seen corresponding path program 10 times [2019-11-25 08:48:37,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:37,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999133766] [2019-11-25 08:48:37,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:37,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999133766] [2019-11-25 08:48:37,279 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930151229] [2019-11-25 08:48:37,279 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:37,314 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:48:37,314 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:37,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-25 08:48:37,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:37,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:37,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-11-25 08:48:37,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047935628] [2019-11-25 08:48:37,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-25 08:48:37,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:37,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-25 08:48:37,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-11-25 08:48:37,356 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 25 states. [2019-11-25 08:48:37,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:37,556 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2019-11-25 08:48:37,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-25 08:48:37,556 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2019-11-25 08:48:37,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:37,557 INFO L225 Difference]: With dead ends: 62 [2019-11-25 08:48:37,557 INFO L226 Difference]: Without dead ends: 56 [2019-11-25 08:48:37,558 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=355, Invalid=835, Unknown=0, NotChecked=0, Total=1190 [2019-11-25 08:48:37,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-25 08:48:37,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2019-11-25 08:48:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-25 08:48:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2019-11-25 08:48:37,568 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2019-11-25 08:48:37,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:37,569 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2019-11-25 08:48:37,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-25 08:48:37,569 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2019-11-25 08:48:37,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-25 08:48:37,573 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:37,573 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:37,774 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:37,774 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:37,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:37,775 INFO L82 PathProgramCache]: Analyzing trace with hash 2041056831, now seen corresponding path program 11 times [2019-11-25 08:48:37,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:37,775 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567792298] [2019-11-25 08:48:37,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:38,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567792298] [2019-11-25 08:48:38,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736833717] [2019-11-25 08:48:38,082 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:38,165 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-25 08:48:38,165 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:38,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-25 08:48:38,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:38,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:38,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-11-25 08:48:38,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777347169] [2019-11-25 08:48:38,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-11-25 08:48:38,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:38,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-25 08:48:38,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-11-25 08:48:38,207 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 27 states. [2019-11-25 08:48:38,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:38,424 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2019-11-25 08:48:38,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-25 08:48:38,424 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 50 [2019-11-25 08:48:38,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:38,425 INFO L225 Difference]: With dead ends: 66 [2019-11-25 08:48:38,425 INFO L226 Difference]: Without dead ends: 60 [2019-11-25 08:48:38,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=417, Invalid=989, Unknown=0, NotChecked=0, Total=1406 [2019-11-25 08:48:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-25 08:48:38,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2019-11-25 08:48:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-25 08:48:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2019-11-25 08:48:38,430 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2019-11-25 08:48:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:38,430 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2019-11-25 08:48:38,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-11-25 08:48:38,431 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2019-11-25 08:48:38,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-25 08:48:38,432 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:38,432 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:38,643 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:38,643 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:38,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:38,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1615882429, now seen corresponding path program 12 times [2019-11-25 08:48:38,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:38,643 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360808037] [2019-11-25 08:48:38,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:39,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360808037] [2019-11-25 08:48:39,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711870238] [2019-11-25 08:48:39,031 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:39,203 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-25 08:48:39,204 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:39,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-25 08:48:39,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:39,258 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:39,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:39,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-11-25 08:48:39,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240386648] [2019-11-25 08:48:39,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-25 08:48:39,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:39,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-25 08:48:39,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-11-25 08:48:39,261 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 29 states. [2019-11-25 08:48:39,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:39,518 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2019-11-25 08:48:39,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-25 08:48:39,519 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2019-11-25 08:48:39,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:39,519 INFO L225 Difference]: With dead ends: 70 [2019-11-25 08:48:39,519 INFO L226 Difference]: Without dead ends: 64 [2019-11-25 08:48:39,520 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=484, Invalid=1156, Unknown=0, NotChecked=0, Total=1640 [2019-11-25 08:48:39,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-25 08:48:39,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2019-11-25 08:48:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-25 08:48:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2019-11-25 08:48:39,525 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 54 [2019-11-25 08:48:39,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:39,525 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2019-11-25 08:48:39,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-25 08:48:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2019-11-25 08:48:39,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-25 08:48:39,526 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:39,526 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:39,729 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:39,729 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:39,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:39,730 INFO L82 PathProgramCache]: Analyzing trace with hash -184353209, now seen corresponding path program 13 times [2019-11-25 08:48:39,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:39,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468167713] [2019-11-25 08:48:39,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:40,070 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468167713] [2019-11-25 08:48:40,070 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097619868] [2019-11-25 08:48:40,070 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:40,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-25 08:48:40,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:40,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:40,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-11-25 08:48:40,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390843877] [2019-11-25 08:48:40,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-25 08:48:40,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:40,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-25 08:48:40,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-11-25 08:48:40,154 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 31 states. [2019-11-25 08:48:40,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:40,420 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2019-11-25 08:48:40,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-11-25 08:48:40,421 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 58 [2019-11-25 08:48:40,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:40,421 INFO L225 Difference]: With dead ends: 74 [2019-11-25 08:48:40,421 INFO L226 Difference]: Without dead ends: 68 [2019-11-25 08:48:40,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2019-11-25 08:48:40,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-25 08:48:40,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2019-11-25 08:48:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-25 08:48:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2019-11-25 08:48:40,427 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 58 [2019-11-25 08:48:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:40,427 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2019-11-25 08:48:40,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-25 08:48:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2019-11-25 08:48:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-25 08:48:40,428 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:40,428 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:40,628 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:40,629 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:40,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:40,629 INFO L82 PathProgramCache]: Analyzing trace with hash 344146763, now seen corresponding path program 14 times [2019-11-25 08:48:40,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:40,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650797550] [2019-11-25 08:48:40,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:40,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650797550] [2019-11-25 08:48:40,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380704595] [2019-11-25 08:48:40,999 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:41,040 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:48:41,042 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:41,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjunts are in the unsatisfiable core [2019-11-25 08:48:41,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:41,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:41,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-11-25 08:48:41,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75296233] [2019-11-25 08:48:41,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-25 08:48:41,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:41,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-25 08:48:41,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-11-25 08:48:41,089 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 33 states. [2019-11-25 08:48:41,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:41,443 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2019-11-25 08:48:41,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-11-25 08:48:41,443 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 62 [2019-11-25 08:48:41,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:41,444 INFO L225 Difference]: With dead ends: 78 [2019-11-25 08:48:41,444 INFO L226 Difference]: Without dead ends: 72 [2019-11-25 08:48:41,445 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=633, Invalid=1529, Unknown=0, NotChecked=0, Total=2162 [2019-11-25 08:48:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-25 08:48:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2019-11-25 08:48:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-25 08:48:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2019-11-25 08:48:41,463 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 62 [2019-11-25 08:48:41,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:41,463 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2019-11-25 08:48:41,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-25 08:48:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2019-11-25 08:48:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-11-25 08:48:41,465 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:41,465 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:41,668 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:41,668 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:41,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:41,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1083270735, now seen corresponding path program 15 times [2019-11-25 08:48:41,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:41,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294611664] [2019-11-25 08:48:41,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:42,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294611664] [2019-11-25 08:48:42,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695173068] [2019-11-25 08:48:42,148 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:42,379 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-25 08:48:42,379 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:42,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-25 08:48:42,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:42,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:42,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-11-25 08:48:42,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639966601] [2019-11-25 08:48:42,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-25 08:48:42,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:42,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-25 08:48:42,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-11-25 08:48:42,426 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 35 states. [2019-11-25 08:48:42,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:42,757 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2019-11-25 08:48:42,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-25 08:48:42,758 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 66 [2019-11-25 08:48:42,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:42,759 INFO L225 Difference]: With dead ends: 82 [2019-11-25 08:48:42,759 INFO L226 Difference]: Without dead ends: 76 [2019-11-25 08:48:42,760 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=715, Invalid=1735, Unknown=0, NotChecked=0, Total=2450 [2019-11-25 08:48:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-25 08:48:42,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2019-11-25 08:48:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-25 08:48:42,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2019-11-25 08:48:42,766 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 66 [2019-11-25 08:48:42,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:42,766 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2019-11-25 08:48:42,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-25 08:48:42,766 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2019-11-25 08:48:42,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-25 08:48:42,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:42,767 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:42,968 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:42,968 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:42,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1559337133, now seen corresponding path program 16 times [2019-11-25 08:48:42,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:42,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260381083] [2019-11-25 08:48:42,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:43,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260381083] [2019-11-25 08:48:43,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298910773] [2019-11-25 08:48:43,420 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:43,463 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:48:43,463 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:43,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-25 08:48:43,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:43,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:43,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-11-25 08:48:43,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161757743] [2019-11-25 08:48:43,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-11-25 08:48:43,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:43,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-11-25 08:48:43,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-11-25 08:48:43,506 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 37 states. [2019-11-25 08:48:43,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:43,875 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2019-11-25 08:48:43,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-11-25 08:48:43,875 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 70 [2019-11-25 08:48:43,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:43,876 INFO L225 Difference]: With dead ends: 86 [2019-11-25 08:48:43,876 INFO L226 Difference]: Without dead ends: 80 [2019-11-25 08:48:43,877 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=802, Invalid=1954, Unknown=0, NotChecked=0, Total=2756 [2019-11-25 08:48:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-25 08:48:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2019-11-25 08:48:43,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-25 08:48:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2019-11-25 08:48:43,881 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 70 [2019-11-25 08:48:43,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:43,881 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2019-11-25 08:48:43,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-11-25 08:48:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2019-11-25 08:48:43,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-25 08:48:43,882 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:43,882 INFO L410 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:44,085 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:44,085 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:44,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1923398057, now seen corresponding path program 17 times [2019-11-25 08:48:44,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:44,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513238089] [2019-11-25 08:48:44,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:44,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513238089] [2019-11-25 08:48:44,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207940211] [2019-11-25 08:48:44,655 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:44,878 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-25 08:48:44,879 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:44,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-25 08:48:44,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:44,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:44,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-11-25 08:48:44,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797992447] [2019-11-25 08:48:44,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-11-25 08:48:44,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:44,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-11-25 08:48:44,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-11-25 08:48:44,938 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 39 states. [2019-11-25 08:48:45,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:45,268 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2019-11-25 08:48:45,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-11-25 08:48:45,268 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 74 [2019-11-25 08:48:45,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:45,269 INFO L225 Difference]: With dead ends: 90 [2019-11-25 08:48:45,269 INFO L226 Difference]: Without dead ends: 84 [2019-11-25 08:48:45,270 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=894, Invalid=2186, Unknown=0, NotChecked=0, Total=3080 [2019-11-25 08:48:45,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-11-25 08:48:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2019-11-25 08:48:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-25 08:48:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2019-11-25 08:48:45,273 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 74 [2019-11-25 08:48:45,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:45,273 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2019-11-25 08:48:45,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-11-25 08:48:45,274 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2019-11-25 08:48:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-25 08:48:45,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:45,275 INFO L410 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:45,483 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:45,483 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:45,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:45,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1202125989, now seen corresponding path program 18 times [2019-11-25 08:48:45,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:45,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176896826] [2019-11-25 08:48:45,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:45,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176896826] [2019-11-25 08:48:45,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87524515] [2019-11-25 08:48:45,999 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/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 [2019-11-25 08:48:46,387 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2019-11-25 08:48:46,388 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:48:46,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 63 conjunts are in the unsatisfiable core [2019-11-25 08:48:46,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:46,589 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-25 08:48:46,590 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:46,605 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:46,606 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:46,607 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2019-11-25 08:48:46,746 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:48:46,747 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-11-25 08:48:46,747 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:46,765 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:46,766 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:46,766 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-11-25 08:48:46,860 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:48:46,861 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-11-25 08:48:46,862 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:46,872 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:46,873 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:46,873 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-11-25 08:48:46,977 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:48:46,979 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-11-25 08:48:46,979 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:46,988 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:46,988 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:46,988 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-11-25 08:48:47,089 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:48:47,095 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-11-25 08:48:47,095 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,103 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:47,103 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,103 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-11-25 08:48:47,224 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:48:47,225 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-11-25 08:48:47,225 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,231 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:47,231 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,232 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-11-25 08:48:47,323 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:48:47,324 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-11-25 08:48:47,324 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,333 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:47,333 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,333 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-11-25 08:48:47,436 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:48:47,437 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-11-25 08:48:47,437 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,447 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:47,448 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,448 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-11-25 08:48:47,559 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:48:47,560 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-11-25 08:48:47,560 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,567 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:47,567 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,567 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:13 [2019-11-25 08:48:47,636 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:47,636 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2019-11-25 08:48:47,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:47,639 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,671 INFO L567 ElimStorePlain]: treesize reduction 20, result has 63.0 percent of original size [2019-11-25 08:48:47,672 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,672 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:23 [2019-11-25 08:48:47,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:47,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:47,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:47,850 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:47,851 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 57 [2019-11-25 08:48:47,851 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:47,852 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,863 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2019-11-25 08:48:47,864 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:47,907 INFO L567 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-11-25 08:48:47,907 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-25 08:48:47,908 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-11-25 08:48:47,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:47,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,069 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:48,070 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 57 [2019-11-25 08:48:48,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,071 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:48,077 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2019-11-25 08:48:48,077 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:48,106 INFO L567 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-11-25 08:48:48,107 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-25 08:48:48,107 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-11-25 08:48:48,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,189 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,250 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:48,250 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 57 [2019-11-25 08:48:48,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,251 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:48,257 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2019-11-25 08:48:48,258 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:48,288 INFO L567 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-11-25 08:48:48,289 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-25 08:48:48,289 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-11-25 08:48:48,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,377 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,421 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,432 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2019-11-25 08:48:48,432 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:48,447 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:48,447 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 57 [2019-11-25 08:48:48,447 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,448 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:48,476 INFO L567 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-11-25 08:48:48,476 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-25 08:48:48,477 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-11-25 08:48:48,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,570 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,639 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2019-11-25 08:48:48,640 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:48,659 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:48,659 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 57 [2019-11-25 08:48:48,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,660 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:48,688 INFO L567 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-11-25 08:48:48,688 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-25 08:48:48,688 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-11-25 08:48:48,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:48,813 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-25 08:48:48,814 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:48:48,823 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:48:48,823 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:48:48,823 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-25 08:48:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 105 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:48,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:48:48,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40] total 78 [2019-11-25 08:48:48,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677469172] [2019-11-25 08:48:48,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 78 states [2019-11-25 08:48:48,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:48,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2019-11-25 08:48:48,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1001, Invalid=5005, Unknown=0, NotChecked=0, Total=6006 [2019-11-25 08:48:48,892 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 78 states. [2019-11-25 08:48:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:50,745 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2019-11-25 08:48:50,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-25 08:48:50,750 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2019-11-25 08:48:50,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:50,751 INFO L225 Difference]: With dead ends: 93 [2019-11-25 08:48:50,751 INFO L226 Difference]: Without dead ends: 87 [2019-11-25 08:48:50,754 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2476, Invalid=10406, Unknown=0, NotChecked=0, Total=12882 [2019-11-25 08:48:50,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-11-25 08:48:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2019-11-25 08:48:50,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-11-25 08:48:50,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2019-11-25 08:48:50,758 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 78 [2019-11-25 08:48:50,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:50,758 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2019-11-25 08:48:50,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 78 states. [2019-11-25 08:48:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2019-11-25 08:48:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-25 08:48:50,760 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:48:50,760 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:50,966 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:48:50,967 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:48:50,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:50,967 INFO L82 PathProgramCache]: Analyzing trace with hash 145436095, now seen corresponding path program 1 times [2019-11-25 08:48:50,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:50,967 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245630977] [2019-11-25 08:48:50,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2019-11-25 08:48:51,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245630977] [2019-11-25 08:48:51,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:51,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:48:51,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648234659] [2019-11-25 08:48:51,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:48:51,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:51,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:48:51,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:51,024 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 4 states. [2019-11-25 08:48:51,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:51,033 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2019-11-25 08:48:51,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:48:51,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2019-11-25 08:48:51,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:48:51,035 INFO L225 Difference]: With dead ends: 84 [2019-11-25 08:48:51,036 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:48:51,036 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:48:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:48:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:48:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:48:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:48:51,037 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2019-11-25 08:48:51,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:48:51,037 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:48:51,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:48:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:48:51,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:48:51,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:48:51,194 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 27 [2019-11-25 08:48:51,198 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2019-11-25 08:48:51,198 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:48:51,198 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-25 08:48:51,199 INFO L444 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-11-25 08:48:51,199 INFO L444 ceAbstractionStarter]: For program point L17-2(lines 10 21) no Hoare annotation was computed. [2019-11-25 08:48:51,199 INFO L444 ceAbstractionStarter]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2019-11-25 08:48:51,199 INFO L444 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2019-11-25 08:48:51,199 INFO L444 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2019-11-25 08:48:51,199 INFO L444 ceAbstractionStarter]: For program point L13-4(line 13) no Hoare annotation was computed. [2019-11-25 08:48:51,199 INFO L440 ceAbstractionStarter]: At program point L13-5(lines 13 15) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#a~0.offset| 0))) (or (and .cse0 (= ULTIMATE.start_main_~i~0 3)) (and .cse0 (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|) (+ |ULTIMATE.start_main_~#a~0.offset| 12)) 2147483647) (<= 4 ULTIMATE.start_main_~i~0)) (and .cse0 (= ULTIMATE.start_main_~i~0 0)) (and .cse0 (= ULTIMATE.start_main_~i~0 1)) (and .cse0 (= ULTIMATE.start_main_~i~0 2)))) [2019-11-25 08:48:51,199 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-25 08:48:51,199 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2019-11-25 08:48:51,200 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-25 08:48:51,200 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:48:51,200 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:48:51,200 INFO L447 ceAbstractionStarter]: At program point L20(lines 10 21) the Hoare annotation is: true [2019-11-25 08:48:51,200 INFO L444 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-25 08:48:51,200 INFO L444 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-11-25 08:48:51,210 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:48:51,220 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:48:51,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:48:51 BoogieIcfgContainer [2019-11-25 08:48:51,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:48:51,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:48:51,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:48:51,228 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:48:51,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:31" (3/4) ... [2019-11-25 08:48:51,232 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:48:51,243 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-25 08:48:51,243 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:48:51,244 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:48:51,282 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b7cc4d58-b260-4c9b-a8cd-b484b6edfef5/bin/uautomizer/witness.graphml [2019-11-25 08:48:51,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:48:51,284 INFO L168 Benchmark]: Toolchain (without parser) took 20809.93 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 343.9 MB). Free memory was 951.4 MB in the beginning and 853.1 MB in the end (delta: 98.3 MB). Peak memory consumption was 442.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:51,284 INFO L168 Benchmark]: CDTParser took 0.18 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. [2019-11-25 08:48:51,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -147.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:51,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:51,285 INFO L168 Benchmark]: Boogie Preprocessor took 18.94 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:51,286 INFO L168 Benchmark]: RCFGBuilder took 225.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:51,286 INFO L168 Benchmark]: TraceAbstraction took 20200.48 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 234.4 MB). Free memory was 1.1 GB in the beginning and 856.8 MB in the end (delta: 220.0 MB). Peak memory consumption was 454.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:51,287 INFO L168 Benchmark]: Witness Printer took 55.17 ms. Allocated memory is still 1.4 GB. Free memory was 856.8 MB in the beginning and 853.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:51,293 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 271.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -147.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.94 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 225.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20200.48 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 234.4 MB). Free memory was 1.1 GB in the beginning and 856.8 MB in the end (delta: 220.0 MB). Peak memory consumption was 454.3 MB. Max. memory is 11.5 GB. * Witness Printer took 55.17 ms. Allocated memory is still 1.4 GB. Free memory was 856.8 MB in the beginning and 853.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2019-11-25 08:48:51,301 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:48:51,304 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((a == 0 && i == 3) || ((a == 0 && unknown-#memory_int-unknown[a][a + 12] <= 2147483647) && 4 <= i)) || (a == 0 && i == 0)) || (a == 0 && i == 1)) || (a == 0 && i == 2) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Result: SAFE, OverallTime: 20.1s, OverallIterations: 22, TraceHistogramMax: 19, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 196 SDtfs, 727 SDslu, 2464 SDs, 0 SdLazy, 3478 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1388 GetRequests, 744 SyntacticMatches, 5 SemanticMatches, 639 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7631 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=21, 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, 22 MinimizatonAttempts, 55 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 22 NumberOfFragments, 46 HoareAnnotationTreeSize, 2 FomulaSimplifications, 176 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 181 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 1701 NumberOfCodeBlocks, 1697 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 1660 ConstructedInterpolants, 0 QuantifiedInterpolants, 309412 SizeOfPredicates, 194 NumberOfNonLiveVariables, 2186 ConjunctsInSsa, 408 ConjunctsInUnsatCore, 41 InterpolantComputations, 4 PerfectInterpolantSequences, 815/8808 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...