./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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-cad4683 [2019-10-22 08:58:36,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:36,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:36,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:36,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:36,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:36,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:36,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:36,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:36,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:36,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:36,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:36,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:36,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:36,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:36,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:36,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:36,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:36,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:36,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:36,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:36,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:36,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:36,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:36,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:36,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:36,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:36,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:36,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:36,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:36,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:36,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:36,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:36,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:36,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:36,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:36,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:36,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:36,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:36,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:36,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:36,709 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 08:58:36,721 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:36,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:36,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:36,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:36,723 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:36,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:36,723 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:58:36,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:36,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:36,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:58:36,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:58:36,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:58:36,724 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 08:58:36,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:36,725 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:36,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:58:36,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:36,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:36,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:58:36,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:58:36,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:58:36,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:36,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:58:36,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:58:36,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:36,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:58:36,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:58:36,727 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/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:36,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:36,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:36,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:36,780 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:36,780 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:36,781 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2019-10-22 08:58:36,824 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/bin/uautomizer/data/5dc82db4f/45ddbe164ffc4212953ed45400b8f4d6/FLAGf25a461ea [2019-10-22 08:58:37,193 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:37,193 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2019-10-22 08:58:37,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/bin/uautomizer/data/5dc82db4f/45ddbe164ffc4212953ed45400b8f4d6/FLAGf25a461ea [2019-10-22 08:58:37,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/bin/uautomizer/data/5dc82db4f/45ddbe164ffc4212953ed45400b8f4d6 [2019-10-22 08:58:37,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:37,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:37,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:37,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:37,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:37,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:37" (1/1) ... [2019-10-22 08:58:37,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fda2e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37, skipping insertion in model container [2019-10-22 08:58:37,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:37" (1/1) ... [2019-10-22 08:58:37,630 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:37,642 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:37,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:37,804 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:37,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:37,920 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:37,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37 WrapperNode [2019-10-22 08:58:37,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:37,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:37,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:37,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:37,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37" (1/1) ... [2019-10-22 08:58:37,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37" (1/1) ... [2019-10-22 08:58:37,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:37,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:37,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:37,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:37,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37" (1/1) ... [2019-10-22 08:58:37,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37" (1/1) ... [2019-10-22 08:58:37,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37" (1/1) ... [2019-10-22 08:58:37,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37" (1/1) ... [2019-10-22 08:58:37,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37" (1/1) ... [2019-10-22 08:58:37,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37" (1/1) ... [2019-10-22 08:58:37,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37" (1/1) ... [2019-10-22 08:58:37,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:37,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:37,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:37,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:37,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:58:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:58:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:58:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:58:38,212 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:38,212 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:58:38,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:38 BoogieIcfgContainer [2019-10-22 08:58:38,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:38,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:58:38,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:58:38,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:58:38,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:58:37" (1/3) ... [2019-10-22 08:58:38,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc78fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:38, skipping insertion in model container [2019-10-22 08:58:38,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:37" (2/3) ... [2019-10-22 08:58:38,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc78fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:38, skipping insertion in model container [2019-10-22 08:58:38,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:38" (3/3) ... [2019-10-22 08:58:38,220 INFO L109 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices-1.c [2019-10-22 08:58:38,232 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:58:38,238 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 08:58:38,248 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 08:58:38,268 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:58:38,268 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:58:38,269 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:58:38,269 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:38,269 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:38,269 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:58:38,269 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:38,269 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:58:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-22 08:58:38,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 08:58:38,287 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:38,288 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 08:58:38,289 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:38,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:38,299 INFO L82 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2019-10-22 08:58:38,306 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:38,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079810127] [2019-10-22 08:58:38,307 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:38,307 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:38,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:38,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079810127] [2019-10-22 08:58:38,454 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:38,454 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:58:38,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199146729] [2019-10-22 08:58:38,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:58:38,458 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:38,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:58:38,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:58:38,469 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-10-22 08:58:38,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:38,537 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-10-22 08:58:38,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:58:38,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-10-22 08:58:38,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:38,548 INFO L225 Difference]: With dead ends: 34 [2019-10-22 08:58:38,548 INFO L226 Difference]: Without dead ends: 18 [2019-10-22 08:58:38,551 INFO L600 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 [2019-10-22 08:58:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-22 08:58:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-22 08:58:38,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 08:58:38,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-22 08:58:38,584 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2019-10-22 08:58:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:38,585 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-22 08:58:38,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:58:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-22 08:58:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 08:58:38,586 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:38,586 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-10-22 08:58:38,586 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:38,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:38,587 INFO L82 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2019-10-22 08:58:38,587 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:38,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031966090] [2019-10-22 08:58:38,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:38,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:38,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:58:38,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031966090] [2019-10-22 08:58:38,623 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:38,623 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:58:38,623 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206211538] [2019-10-22 08:58:38,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:58:38,625 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:38,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:58:38,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:58:38,626 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2019-10-22 08:58:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:38,652 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-10-22 08:58:38,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:58:38,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-10-22 08:58:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:38,653 INFO L225 Difference]: With dead ends: 18 [2019-10-22 08:58:38,653 INFO L226 Difference]: Without dead ends: 17 [2019-10-22 08:58:38,654 INFO L600 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 [2019-10-22 08:58:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-22 08:58:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 08:58:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 08:58:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-22 08:58:38,657 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2019-10-22 08:58:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:38,657 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-22 08:58:38,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:58:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-22 08:58:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:58:38,658 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:38,658 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:38,659 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:38,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:38,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1607296535, now seen corresponding path program 1 times [2019-10-22 08:58:38,659 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:38,659 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701374280] [2019-10-22 08:58:38,660 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:38,660 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:38,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:38,698 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701374280] [2019-10-22 08:58:38,698 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860670905] [2019-10-22 08:58:38,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:38,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:38,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:38,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:38,818 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:38,818 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-10-22 08:58:38,819 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069282751] [2019-10-22 08:58:38,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:58:38,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:38,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:58:38,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:58:38,821 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2019-10-22 08:58:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:38,894 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2019-10-22 08:58:38,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:58:38,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-10-22 08:58:38,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:38,896 INFO L225 Difference]: With dead ends: 28 [2019-10-22 08:58:38,896 INFO L226 Difference]: Without dead ends: 22 [2019-10-22 08:58:38,897 INFO L600 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 [2019-10-22 08:58:38,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-22 08:58:38,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-10-22 08:58:38,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 08:58:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-22 08:58:38,903 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2019-10-22 08:58:38,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:38,904 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-22 08:58:38,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:58:38,904 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-22 08:58:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:58:38,904 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:38,904 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-10-22 08:58:39,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:39,106 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:39,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2019-10-22 08:58:39,107 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:39,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220534238] [2019-10-22 08:58:39,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:39,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:39,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:39,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220534238] [2019-10-22 08:58:39,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965617070] [2019-10-22 08:58:39,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:39,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:58:39,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:39,242 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 08:58:39,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2019-10-22 08:58:39,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290742605] [2019-10-22 08:58:39,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:58:39,243 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:39,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:58:39,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:58:39,244 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2019-10-22 08:58:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:39,293 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-10-22 08:58:39,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:58:39,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-10-22 08:58:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:39,295 INFO L225 Difference]: With dead ends: 18 [2019-10-22 08:58:39,295 INFO L226 Difference]: Without dead ends: 17 [2019-10-22 08:58:39,295 INFO L600 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 [2019-10-22 08:58:39,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-22 08:58:39,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 08:58:39,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 08:58:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-22 08:58:39,298 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2019-10-22 08:58:39,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:39,299 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-22 08:58:39,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:58:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-22 08:58:39,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 08:58:39,300 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:39,300 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:39,500 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:39,501 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:39,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:39,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1053474021, now seen corresponding path program 2 times [2019-10-22 08:58:39,502 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:39,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712540750] [2019-10-22 08:58:39,502 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:39,502 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:39,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:39,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712540750] [2019-10-22 08:58:39,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601630853] [2019-10-22 08:58:39,557 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:39,583 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:58:39,584 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:39,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:58:39,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:39,618 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:39,618 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-10-22 08:58:39,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542468731] [2019-10-22 08:58:39,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:58:39,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:39,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:58:39,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:58:39,619 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states. [2019-10-22 08:58:39,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:39,682 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-10-22 08:58:39,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:58:39,682 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2019-10-22 08:58:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:39,683 INFO L225 Difference]: With dead ends: 30 [2019-10-22 08:58:39,683 INFO L226 Difference]: Without dead ends: 24 [2019-10-22 08:58:39,684 INFO L600 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 [2019-10-22 08:58:39,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-22 08:58:39,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-10-22 08:58:39,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-22 08:58:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-10-22 08:58:39,687 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2019-10-22 08:58:39,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:39,687 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-10-22 08:58:39,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:58:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-10-22 08:58:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 08:58:39,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:39,688 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:39,888 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:39,889 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:39,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:39,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1100938783, now seen corresponding path program 3 times [2019-10-22 08:58:39,889 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:39,890 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028565099] [2019-10-22 08:58:39,890 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:39,890 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:39,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:39,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028565099] [2019-10-22 08:58:39,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586291715] [2019-10-22 08:58:39,957 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:39,991 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-22 08:58:39,991 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:39,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:58:39,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:40,021 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:40,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-10-22 08:58:40,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400663899] [2019-10-22 08:58:40,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 08:58:40,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:40,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 08:58:40,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:58:40,022 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2019-10-22 08:58:40,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:40,081 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-10-22 08:58:40,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:58:40,082 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2019-10-22 08:58:40,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:40,082 INFO L225 Difference]: With dead ends: 34 [2019-10-22 08:58:40,082 INFO L226 Difference]: Without dead ends: 28 [2019-10-22 08:58:40,083 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:58:40,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-22 08:58:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2019-10-22 08:58:40,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-22 08:58:40,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2019-10-22 08:58:40,086 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2019-10-22 08:58:40,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:40,086 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2019-10-22 08:58:40,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 08:58:40,087 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2019-10-22 08:58:40,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 08:58:40,087 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:40,088 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:40,288 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:40,288 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:40,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1326737629, now seen corresponding path program 4 times [2019-10-22 08:58:40,289 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:40,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691251575] [2019-10-22 08:58:40,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:40,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:40,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:40,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691251575] [2019-10-22 08:58:40,399 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812636357] [2019-10-22 08:58:40,399 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:40,434 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:58:40,434 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:40,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 08:58:40,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:40,464 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:40,464 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-10-22 08:58:40,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658935003] [2019-10-22 08:58:40,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-22 08:58:40,465 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:40,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-22 08:58:40,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:58:40,466 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 13 states. [2019-10-22 08:58:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:40,547 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2019-10-22 08:58:40,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 08:58:40,548 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2019-10-22 08:58:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:40,548 INFO L225 Difference]: With dead ends: 38 [2019-10-22 08:58:40,549 INFO L226 Difference]: Without dead ends: 32 [2019-10-22 08:58:40,549 INFO L600 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 [2019-10-22 08:58:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-22 08:58:40,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2019-10-22 08:58:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:58:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-10-22 08:58:40,553 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2019-10-22 08:58:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:40,553 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-10-22 08:58:40,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-22 08:58:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-10-22 08:58:40,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 08:58:40,554 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:40,554 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:40,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:40,755 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:40,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:40,755 INFO L82 PathProgramCache]: Analyzing trace with hash 108793383, now seen corresponding path program 5 times [2019-10-22 08:58:40,755 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:40,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894978388] [2019-10-22 08:58:40,755 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:40,756 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:40,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:40,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894978388] [2019-10-22 08:58:40,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573585507] [2019-10-22 08:58:40,876 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:40,918 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-10-22 08:58:40,918 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:40,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 08:58:40,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:40,952 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:40,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-10-22 08:58:40,953 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98403365] [2019-10-22 08:58:40,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 08:58:40,953 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:40,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 08:58:40,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:58:40,954 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 15 states. [2019-10-22 08:58:41,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:41,064 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2019-10-22 08:58:41,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 08:58:41,066 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 26 [2019-10-22 08:58:41,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:41,067 INFO L225 Difference]: With dead ends: 42 [2019-10-22 08:58:41,067 INFO L226 Difference]: Without dead ends: 36 [2019-10-22 08:58:41,068 INFO L600 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 [2019-10-22 08:58:41,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-22 08:58:41,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2019-10-22 08:58:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-22 08:58:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2019-10-22 08:58:41,074 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2019-10-22 08:58:41,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:41,074 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2019-10-22 08:58:41,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 08:58:41,074 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2019-10-22 08:58:41,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 08:58:41,075 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:41,075 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:41,275 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:41,276 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:41,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:41,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1590598869, now seen corresponding path program 6 times [2019-10-22 08:58:41,277 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:41,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278527326] [2019-10-22 08:58:41,278 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:41,278 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:41,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:41,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278527326] [2019-10-22 08:58:41,434 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123808576] [2019-10-22 08:58:41,434 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:41,494 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-10-22 08:58:41,494 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:41,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-22 08:58:41,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:41,531 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:41,531 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-10-22 08:58:41,531 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294762192] [2019-10-22 08:58:41,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-22 08:58:41,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:41,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-22 08:58:41,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-10-22 08:58:41,533 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 17 states. [2019-10-22 08:58:41,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:41,658 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2019-10-22 08:58:41,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 08:58:41,659 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2019-10-22 08:58:41,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:41,660 INFO L225 Difference]: With dead ends: 46 [2019-10-22 08:58:41,660 INFO L226 Difference]: Without dead ends: 40 [2019-10-22 08:58:41,660 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2019-10-22 08:58:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-22 08:58:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-10-22 08:58:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 08:58:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2019-10-22 08:58:41,664 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2019-10-22 08:58:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:41,664 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2019-10-22 08:58:41,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-22 08:58:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2019-10-22 08:58:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-22 08:58:41,665 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:41,665 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:41,866 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:41,866 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:41,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:41,867 INFO L82 PathProgramCache]: Analyzing trace with hash -2022926801, now seen corresponding path program 7 times [2019-10-22 08:58:41,867 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:41,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878165766] [2019-10-22 08:58:41,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:41,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:41,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:42,040 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878165766] [2019-10-22 08:58:42,040 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200056594] [2019-10-22 08:58:42,040 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:42,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-22 08:58:42,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:42,106 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:42,107 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-10-22 08:58:42,107 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298122157] [2019-10-22 08:58:42,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-22 08:58:42,107 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:42,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-22 08:58:42,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-10-22 08:58:42,108 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 19 states. [2019-10-22 08:58:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:42,235 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2019-10-22 08:58:42,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-22 08:58:42,235 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2019-10-22 08:58:42,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:42,236 INFO L225 Difference]: With dead ends: 50 [2019-10-22 08:58:42,236 INFO L226 Difference]: Without dead ends: 44 [2019-10-22 08:58:42,236 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2019-10-22 08:58:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-22 08:58:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2019-10-22 08:58:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-22 08:58:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2019-10-22 08:58:42,240 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 34 [2019-10-22 08:58:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:42,241 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2019-10-22 08:58:42,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-22 08:58:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2019-10-22 08:58:42,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 08:58:42,241 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:42,242 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:42,442 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:42,442 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:42,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:42,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1492211917, now seen corresponding path program 8 times [2019-10-22 08:58:42,443 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:42,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267022084] [2019-10-22 08:58:42,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:42,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:42,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:42,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267022084] [2019-10-22 08:58:42,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540684280] [2019-10-22 08:58:42,615 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:42,652 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:58:42,652 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:42,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-22 08:58:42,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:42,682 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:42,683 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-10-22 08:58:42,683 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304944784] [2019-10-22 08:58:42,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-22 08:58:42,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:42,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-22 08:58:42,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-10-22 08:58:42,684 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 21 states. [2019-10-22 08:58:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:42,833 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2019-10-22 08:58:42,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-22 08:58:42,834 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2019-10-22 08:58:42,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:42,834 INFO L225 Difference]: With dead ends: 54 [2019-10-22 08:58:42,834 INFO L226 Difference]: Without dead ends: 48 [2019-10-22 08:58:42,835 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2019-10-22 08:58:42,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-22 08:58:42,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2019-10-22 08:58:42,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 08:58:42,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2019-10-22 08:58:42,838 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 38 [2019-10-22 08:58:42,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:42,839 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2019-10-22 08:58:42,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-22 08:58:42,839 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2019-10-22 08:58:42,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-22 08:58:42,845 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:42,846 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:43,046 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:43,047 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:43,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:43,047 INFO L82 PathProgramCache]: Analyzing trace with hash 360224311, now seen corresponding path program 9 times [2019-10-22 08:58:43,047 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:43,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548326204] [2019-10-22 08:58:43,047 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:43,047 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:43,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:43,213 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548326204] [2019-10-22 08:58:43,213 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800497035] [2019-10-22 08:58:43,213 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:43,269 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-10-22 08:58:43,269 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:43,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-22 08:58:43,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:43,297 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:43,297 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-10-22 08:58:43,298 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962346022] [2019-10-22 08:58:43,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-22 08:58:43,298 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:43,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-22 08:58:43,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-10-22 08:58:43,299 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 23 states. [2019-10-22 08:58:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:43,453 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2019-10-22 08:58:43,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-22 08:58:43,453 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2019-10-22 08:58:43,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:43,454 INFO L225 Difference]: With dead ends: 58 [2019-10-22 08:58:43,454 INFO L226 Difference]: Without dead ends: 52 [2019-10-22 08:58:43,455 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2019-10-22 08:58:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-22 08:58:43,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2019-10-22 08:58:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-10-22 08:58:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2019-10-22 08:58:43,459 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 42 [2019-10-22 08:58:43,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:43,459 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2019-10-22 08:58:43,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-22 08:58:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2019-10-22 08:58:43,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-22 08:58:43,460 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:43,460 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:43,660 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:43,661 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:43,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:43,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1334534971, now seen corresponding path program 10 times [2019-10-22 08:58:43,661 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:43,661 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246723472] [2019-10-22 08:58:43,661 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:43,661 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:43,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:43,909 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246723472] [2019-10-22 08:58:43,910 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712271670] [2019-10-22 08:58:43,910 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:43,947 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:58:43,947 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:43,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-22 08:58:43,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:43,986 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:43,986 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-10-22 08:58:43,987 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870347275] [2019-10-22 08:58:43,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-10-22 08:58:43,987 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:43,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-10-22 08:58:43,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-10-22 08:58:43,988 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 25 states. [2019-10-22 08:58:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:44,161 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2019-10-22 08:58:44,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-22 08:58:44,163 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2019-10-22 08:58:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:44,164 INFO L225 Difference]: With dead ends: 62 [2019-10-22 08:58:44,164 INFO L226 Difference]: Without dead ends: 56 [2019-10-22 08:58:44,165 INFO L600 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 [2019-10-22 08:58:44,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-22 08:58:44,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2019-10-22 08:58:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-22 08:58:44,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2019-10-22 08:58:44,174 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2019-10-22 08:58:44,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:44,174 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2019-10-22 08:58:44,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-10-22 08:58:44,175 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2019-10-22 08:58:44,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 08:58:44,175 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:44,175 INFO L380 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:44,377 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:44,377 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:44,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:44,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2041056831, now seen corresponding path program 11 times [2019-10-22 08:58:44,377 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:44,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248494685] [2019-10-22 08:58:44,378 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:44,378 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:44,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:44,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248494685] [2019-10-22 08:58:44,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924758000] [2019-10-22 08:58:44,622 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:44,685 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-10-22 08:58:44,685 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:44,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-22 08:58:44,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:44,719 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:44,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-10-22 08:58:44,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695905492] [2019-10-22 08:58:44,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-10-22 08:58:44,720 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:44,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-10-22 08:58:44,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-10-22 08:58:44,721 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 27 states. [2019-10-22 08:58:44,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:44,882 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2019-10-22 08:58:44,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 08:58:44,882 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 50 [2019-10-22 08:58:44,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:44,882 INFO L225 Difference]: With dead ends: 66 [2019-10-22 08:58:44,882 INFO L226 Difference]: Without dead ends: 60 [2019-10-22 08:58:44,883 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=417, Invalid=989, Unknown=0, NotChecked=0, Total=1406 [2019-10-22 08:58:44,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-22 08:58:44,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2019-10-22 08:58:44,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-22 08:58:44,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2019-10-22 08:58:44,886 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2019-10-22 08:58:44,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:44,887 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2019-10-22 08:58:44,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-10-22 08:58:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2019-10-22 08:58:44,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-22 08:58:44,888 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:44,888 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:45,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:45,088 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:45,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1615882429, now seen corresponding path program 12 times [2019-10-22 08:58:45,089 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:45,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055539255] [2019-10-22 08:58:45,089 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:45,089 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:45,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:45,360 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:45,360 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055539255] [2019-10-22 08:58:45,360 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907195792] [2019-10-22 08:58:45,360 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:45,537 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-10-22 08:58:45,538 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:45,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-22 08:58:45,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:45,583 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:45,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-10-22 08:58:45,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103448159] [2019-10-22 08:58:45,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-10-22 08:58:45,585 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:45,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-10-22 08:58:45,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-10-22 08:58:45,585 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 29 states. [2019-10-22 08:58:45,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:45,810 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2019-10-22 08:58:45,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-10-22 08:58:45,811 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2019-10-22 08:58:45,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:45,811 INFO L225 Difference]: With dead ends: 70 [2019-10-22 08:58:45,811 INFO L226 Difference]: Without dead ends: 64 [2019-10-22 08:58:45,813 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=484, Invalid=1156, Unknown=0, NotChecked=0, Total=1640 [2019-10-22 08:58:45,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-10-22 08:58:45,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2019-10-22 08:58:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-22 08:58:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2019-10-22 08:58:45,818 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 54 [2019-10-22 08:58:45,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:45,818 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2019-10-22 08:58:45,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-10-22 08:58:45,818 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2019-10-22 08:58:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-22 08:58:45,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:45,819 INFO L380 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:46,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:46,020 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:46,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:46,020 INFO L82 PathProgramCache]: Analyzing trace with hash -184353209, now seen corresponding path program 13 times [2019-10-22 08:58:46,020 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:46,020 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576256289] [2019-10-22 08:58:46,020 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:46,020 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:46,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:46,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576256289] [2019-10-22 08:58:46,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814091540] [2019-10-22 08:58:46,336 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:46,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2019-10-22 08:58:46,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:46,436 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:46,439 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-10-22 08:58:46,439 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853989626] [2019-10-22 08:58:46,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-10-22 08:58:46,440 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:46,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-10-22 08:58:46,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-10-22 08:58:46,440 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 31 states. [2019-10-22 08:58:46,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:46,680 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2019-10-22 08:58:46,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-10-22 08:58:46,681 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 58 [2019-10-22 08:58:46,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:46,681 INFO L225 Difference]: With dead ends: 74 [2019-10-22 08:58:46,681 INFO L226 Difference]: Without dead ends: 68 [2019-10-22 08:58:46,682 INFO L600 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 [2019-10-22 08:58:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-22 08:58:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2019-10-22 08:58:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-10-22 08:58:46,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2019-10-22 08:58:46,685 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 58 [2019-10-22 08:58:46,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:46,686 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2019-10-22 08:58:46,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-10-22 08:58:46,686 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2019-10-22 08:58:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-22 08:58:46,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:46,688 INFO L380 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:46,889 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:46,889 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:46,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:46,889 INFO L82 PathProgramCache]: Analyzing trace with hash 344146763, now seen corresponding path program 14 times [2019-10-22 08:58:46,889 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:46,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487309630] [2019-10-22 08:58:46,889 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:46,889 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:46,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:47,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487309630] [2019-10-22 08:58:47,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741182223] [2019-10-22 08:58:47,192 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:47,237 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:58:47,237 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:47,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 30 conjunts are in the unsatisfiable core [2019-10-22 08:58:47,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:47,287 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:47,287 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-10-22 08:58:47,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37106313] [2019-10-22 08:58:47,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-10-22 08:58:47,288 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:47,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-10-22 08:58:47,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-10-22 08:58:47,289 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 33 states. [2019-10-22 08:58:47,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:47,577 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2019-10-22 08:58:47,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-22 08:58:47,577 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 62 [2019-10-22 08:58:47,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:47,577 INFO L225 Difference]: With dead ends: 78 [2019-10-22 08:58:47,577 INFO L226 Difference]: Without dead ends: 72 [2019-10-22 08:58:47,578 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=633, Invalid=1529, Unknown=0, NotChecked=0, Total=2162 [2019-10-22 08:58:47,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-10-22 08:58:47,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2019-10-22 08:58:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-10-22 08:58:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2019-10-22 08:58:47,581 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 62 [2019-10-22 08:58:47,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:47,582 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2019-10-22 08:58:47,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-10-22 08:58:47,582 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2019-10-22 08:58:47,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-22 08:58:47,582 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:47,582 INFO L380 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:47,783 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:47,783 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:47,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:47,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1083270735, now seen corresponding path program 15 times [2019-10-22 08:58:47,784 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:47,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3351868] [2019-10-22 08:58:47,784 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:47,784 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:47,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:48,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3351868] [2019-10-22 08:58:48,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250085936] [2019-10-22 08:58:48,176 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:48,422 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-10-22 08:58:48,422 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:48,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 32 conjunts are in the unsatisfiable core [2019-10-22 08:58:48,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:48,463 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:48,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-10-22 08:58:48,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770651152] [2019-10-22 08:58:48,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-22 08:58:48,465 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:48,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-22 08:58:48,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-10-22 08:58:48,465 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 35 states. [2019-10-22 08:58:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:48,762 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2019-10-22 08:58:48,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-10-22 08:58:48,765 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 66 [2019-10-22 08:58:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:48,766 INFO L225 Difference]: With dead ends: 82 [2019-10-22 08:58:48,766 INFO L226 Difference]: Without dead ends: 76 [2019-10-22 08:58:48,766 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=715, Invalid=1735, Unknown=0, NotChecked=0, Total=2450 [2019-10-22 08:58:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-10-22 08:58:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2019-10-22 08:58:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-10-22 08:58:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2019-10-22 08:58:48,769 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 66 [2019-10-22 08:58:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:48,770 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2019-10-22 08:58:48,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-22 08:58:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2019-10-22 08:58:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-22 08:58:48,770 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:48,770 INFO L380 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:48,970 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:48,971 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:48,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1559337133, now seen corresponding path program 16 times [2019-10-22 08:58:48,971 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:48,971 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817066997] [2019-10-22 08:58:48,971 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,971 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:49,328 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817066997] [2019-10-22 08:58:49,328 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140382047] [2019-10-22 08:58:49,329 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:49,370 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:58:49,370 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:49,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 34 conjunts are in the unsatisfiable core [2019-10-22 08:58:49,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:49,422 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:49,422 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-10-22 08:58:49,422 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75841998] [2019-10-22 08:58:49,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-10-22 08:58:49,424 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:49,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-10-22 08:58:49,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-10-22 08:58:49,425 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 37 states. [2019-10-22 08:58:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:49,749 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2019-10-22 08:58:49,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-22 08:58:49,749 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 70 [2019-10-22 08:58:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:49,750 INFO L225 Difference]: With dead ends: 86 [2019-10-22 08:58:49,750 INFO L226 Difference]: Without dead ends: 80 [2019-10-22 08:58:49,750 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=802, Invalid=1954, Unknown=0, NotChecked=0, Total=2756 [2019-10-22 08:58:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-10-22 08:58:49,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2019-10-22 08:58:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-10-22 08:58:49,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2019-10-22 08:58:49,753 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 70 [2019-10-22 08:58:49,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:49,753 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2019-10-22 08:58:49,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-10-22 08:58:49,754 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2019-10-22 08:58:49,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-22 08:58:49,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:49,754 INFO L380 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:49,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:49,961 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:49,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:49,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1923398057, now seen corresponding path program 17 times [2019-10-22 08:58:49,961 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:49,961 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366862479] [2019-10-22 08:58:49,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:50,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366862479] [2019-10-22 08:58:50,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021539346] [2019-10-22 08:58:50,390 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:50,589 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-10-22 08:58:50,589 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:50,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 36 conjunts are in the unsatisfiable core [2019-10-22 08:58:50,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:50,630 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:50,631 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-10-22 08:58:50,631 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271913517] [2019-10-22 08:58:50,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-10-22 08:58:50,631 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:50,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-10-22 08:58:50,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-10-22 08:58:50,632 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 39 states. [2019-10-22 08:58:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:50,970 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2019-10-22 08:58:50,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-10-22 08:58:50,971 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 74 [2019-10-22 08:58:50,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:50,971 INFO L225 Difference]: With dead ends: 90 [2019-10-22 08:58:50,971 INFO L226 Difference]: Without dead ends: 84 [2019-10-22 08:58:50,972 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=894, Invalid=2186, Unknown=0, NotChecked=0, Total=3080 [2019-10-22 08:58:50,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-10-22 08:58:50,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2019-10-22 08:58:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-10-22 08:58:50,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2019-10-22 08:58:50,975 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 74 [2019-10-22 08:58:50,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:50,976 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2019-10-22 08:58:50,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-10-22 08:58:50,976 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2019-10-22 08:58:50,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-22 08:58:50,977 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:50,977 INFO L380 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:51,177 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:51,178 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:51,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:51,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1202125989, now seen corresponding path program 18 times [2019-10-22 08:58:51,178 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:51,178 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853180572] [2019-10-22 08:58:51,178 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:51,178 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:51,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:51,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853180572] [2019-10-22 08:58:51,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034675012] [2019-10-22 08:58:51,680 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/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 [2019-10-22 08:58:51,938 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2019-10-22 08:58:51,938 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:58:51,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 63 conjunts are in the unsatisfiable core [2019-10-22 08:58:51,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:52,121 INFO L375 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 [2019-10-22 08:58:52,122 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,129 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:52,129 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,130 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2019-10-22 08:58:52,232 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:58:52,233 INFO L375 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 [2019-10-22 08:58:52,233 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,252 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:52,253 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,253 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-10-22 08:58:52,331 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:58:52,332 INFO L375 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 [2019-10-22 08:58:52,333 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,340 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:52,341 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,341 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-10-22 08:58:52,423 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:58:52,425 INFO L375 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 [2019-10-22 08:58:52,425 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,433 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:52,433 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,434 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-10-22 08:58:52,516 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:58:52,517 INFO L375 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 [2019-10-22 08:58:52,518 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,525 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:52,526 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,526 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-10-22 08:58:52,610 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:58:52,611 INFO L375 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 [2019-10-22 08:58:52,612 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,621 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:52,622 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,622 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-10-22 08:58:52,707 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:58:52,708 INFO L375 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 [2019-10-22 08:58:52,708 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,717 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:52,718 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,718 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-10-22 08:58:52,796 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:58:52,796 INFO L375 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 [2019-10-22 08:58:52,797 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,802 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:52,802 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,802 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-10-22 08:58:52,879 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 08:58:52,880 INFO L375 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 [2019-10-22 08:58:52,880 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,896 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:52,897 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,897 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:13 [2019-10-22 08:58:52,940 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:52,940 INFO L375 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 [2019-10-22 08:58:52,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:52,943 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,957 INFO L567 ElimStorePlain]: treesize reduction 20, result has 63.0 percent of original size [2019-10-22 08:58:52,958 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:52,958 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:23 [2019-10-22 08:58:52,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,090 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:53,090 INFO L375 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 [2019-10-22 08:58:53,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,091 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:53,096 INFO L375 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 [2019-10-22 08:58:53,096 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:53,125 INFO L567 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-10-22 08:58:53,126 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-22 08:58:53,126 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-10-22 08:58:53,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,195 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,231 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,249 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:53,249 INFO L375 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 [2019-10-22 08:58:53,250 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,250 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:53,255 INFO L375 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 [2019-10-22 08:58:53,255 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:53,286 INFO L567 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-10-22 08:58:53,286 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-22 08:58:53,286 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-10-22 08:58:53,321 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,433 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:53,433 INFO L375 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 [2019-10-22 08:58:53,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,434 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:53,441 INFO L375 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 [2019-10-22 08:58:53,441 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:53,477 INFO L567 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-10-22 08:58:53,477 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-22 08:58:53,478 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-10-22 08:58:53,520 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,563 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,611 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,618 INFO L375 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 [2019-10-22 08:58:53,618 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:53,634 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:53,634 INFO L375 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 [2019-10-22 08:58:53,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,635 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:53,669 INFO L567 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-10-22 08:58:53,670 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-22 08:58:53,670 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-10-22 08:58:53,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,801 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,811 INFO L375 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 [2019-10-22 08:58:53,812 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:53,829 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:53,830 INFO L375 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 [2019-10-22 08:58:53,830 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,831 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:53,859 INFO L567 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-10-22 08:58:53,859 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-22 08:58:53,859 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:51, output treesize:21 [2019-10-22 08:58:53,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:58:53,984 INFO L375 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 [2019-10-22 08:58:53,984 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 08:58:53,985 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 08:58:53,986 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 08:58:53,986 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-22 08:58:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 105 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:54,045 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:54,045 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40] total 78 [2019-10-22 08:58:54,045 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720701591] [2019-10-22 08:58:54,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 78 states [2019-10-22 08:58:54,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:54,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2019-10-22 08:58:54,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1001, Invalid=5005, Unknown=0, NotChecked=0, Total=6006 [2019-10-22 08:58:54,048 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 78 states. [2019-10-22 08:58:55,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:55,688 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2019-10-22 08:58:55,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-22 08:58:55,689 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2019-10-22 08:58:55,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:55,689 INFO L225 Difference]: With dead ends: 93 [2019-10-22 08:58:55,689 INFO L226 Difference]: Without dead ends: 87 [2019-10-22 08:58:55,691 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4106 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2476, Invalid=10406, Unknown=0, NotChecked=0, Total=12882 [2019-10-22 08:58:55,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-10-22 08:58:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2019-10-22 08:58:55,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-10-22 08:58:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2019-10-22 08:58:55,694 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 78 [2019-10-22 08:58:55,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:55,694 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2019-10-22 08:58:55,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 78 states. [2019-10-22 08:58:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2019-10-22 08:58:55,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-22 08:58:55,695 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:55,695 INFO L380 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:55,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:55,896 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:55,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:55,896 INFO L82 PathProgramCache]: Analyzing trace with hash 145436095, now seen corresponding path program 1 times [2019-10-22 08:58:55,896 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:55,897 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358708005] [2019-10-22 08:58:55,897 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:55,897 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:55,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2019-10-22 08:58:55,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358708005] [2019-10-22 08:58:55,931 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:55,931 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:58:55,931 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308221167] [2019-10-22 08:58:55,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:58:55,931 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:55,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:58:55,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:58:55,932 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 4 states. [2019-10-22 08:58:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:55,942 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2019-10-22 08:58:55,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:58:55,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2019-10-22 08:58:55,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:55,943 INFO L225 Difference]: With dead ends: 84 [2019-10-22 08:58:55,943 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:58:55,943 INFO L600 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 [2019-10-22 08:58:55,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:58:55,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:58:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:58:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:58:55,944 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2019-10-22 08:58:55,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:55,944 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:55,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:58:55,944 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:58:55,944 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:58:55,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:58:56,061 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:58:56,061 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-10-22 08:58:56,061 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 10 21) no Hoare annotation was computed. [2019-10-22 08:58:56,061 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2019-10-22 08:58:56,061 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2019-10-22 08:58:56,061 INFO L443 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2019-10-22 08:58:56,062 INFO L443 ceAbstractionStarter]: For program point L13-4(line 13) no Hoare annotation was computed. [2019-10-22 08:58:56,062 INFO L439 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 1)) (and .cse0 (= ULTIMATE.start_main_~i~0 0)) (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 2)))) [2019-10-22 08:58:56,062 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-10-22 08:58:56,062 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2019-10-22 08:58:56,062 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 08:58:56,062 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:58:56,062 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:58:56,062 INFO L446 ceAbstractionStarter]: At program point L20(lines 10 21) the Hoare annotation is: true [2019-10-22 08:58:56,063 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-10-22 08:58:56,063 INFO L443 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-10-22 08:58:56,063 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2019-10-22 08:58:56,063 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-10-22 08:58:56,071 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:58:56,077 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:58:56,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:58:56 BoogieIcfgContainer [2019-10-22 08:58:56,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:58:56,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:56,084 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:56,084 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:56,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:38" (3/4) ... [2019-10-22 08:58:56,088 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:58:56,098 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 08:58:56,098 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:58:56,098 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 08:58:56,136 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0f2946b3-26a2-49b3-b243-e5e35d9af351/bin/uautomizer/witness.graphml [2019-10-22 08:58:56,136 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:56,137 INFO L168 Benchmark]: Toolchain (without parser) took 18519.51 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 379.6 MB). Free memory was 943.4 MB in the beginning and 1.3 GB in the end (delta: -342.5 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:56,138 INFO L168 Benchmark]: CDTParser took 0.16 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. [2019-10-22 08:58:56,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:56,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:56,138 INFO L168 Benchmark]: Boogie Preprocessor took 27.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:56,138 INFO L168 Benchmark]: RCFGBuilder took 234.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:56,139 INFO L168 Benchmark]: TraceAbstraction took 17869.26 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 243.3 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -184.4 MB). Peak memory consumption was 58.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:56,139 INFO L168 Benchmark]: Witness Printer took 51.99 ms. Allocated memory is still 1.4 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:56,141 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 302.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -183.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 234.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17869.26 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 243.3 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -184.4 MB). Peak memory consumption was 58.9 MB. Max. memory is 11.5 GB. * Witness Printer took 51.99 ms. Allocated memory is still 1.4 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 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 [2019-10-22 08:58:56,145 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-22 08:58:56,146 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((a == 0 && i == 1) || (a == 0 && i == 0)) || (a == 0 && i == 3)) || ((a == 0 && unknown-#memory_int-unknown[a][a + 12] <= 2147483647) && 4 <= i)) || (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: 17.7s, OverallIterations: 22, TraceHistogramMax: 19, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 196 SDtfs, 727 SDslu, 2464 SDs, 0 SdLazy, 3478 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1388 GetRequests, 744 SyntacticMatches, 5 SemanticMatches, 639 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7631 ImplicationChecksByTransitivity, 7.6s 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: 0.0s 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, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 1701 NumberOfCodeBlocks, 1697 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 1660 ConstructedInterpolants, 0 QuantifiedInterpolants, 309412 SizeOfPredicates, 194 NumberOfNonLiveVariables, 2167 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...