./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.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_6f0f43ee-999d-4979-863b-9ebaea6b7055/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/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 500cb8735f650eb0e7c33062ddc23c2166b17f19 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 09:02:56,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:56,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:56,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:56,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:56,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:56,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:56,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:56,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:56,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:56,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:56,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:56,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:56,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:56,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:56,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:56,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:56,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:56,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:56,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:56,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:56,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:56,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:56,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:56,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:56,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:56,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:56,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:56,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:56,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:56,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:56,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:56,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:56,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:56,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:56,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:56,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:56,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:56,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:56,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:56,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:56,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 09:02:56,828 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:56,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:56,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:56,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:56,829 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:56,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:56,841 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:02:56,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:56,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:56,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:56,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:56,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:56,842 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 09:02:56,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:56,842 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:56,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:56,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:56,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:56,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:56,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:56,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:56,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:56,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:56,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:56,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:56,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:56,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:56,844 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_6f0f43ee-999d-4979-863b-9ebaea6b7055/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 -> 500cb8735f650eb0e7c33062ddc23c2166b17f19 [2019-10-22 09:02:56,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:56,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:56,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:56,897 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:56,898 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:56,899 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2019-10-22 09:02:56,955 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/bin/uautomizer/data/2529d2852/ed61d57499ef4d899a3a7bbfae167715/FLAG96e0a9bcf [2019-10-22 09:02:57,361 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:57,361 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2019-10-22 09:02:57,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/bin/uautomizer/data/2529d2852/ed61d57499ef4d899a3a7bbfae167715/FLAG96e0a9bcf [2019-10-22 09:02:57,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/bin/uautomizer/data/2529d2852/ed61d57499ef4d899a3a7bbfae167715 [2019-10-22 09:02:57,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:57,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:57,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:57,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:57,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:57,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d45d96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57, skipping insertion in model container [2019-10-22 09:02:57,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,400 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:57,418 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:57,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:57,561 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:57,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:57,651 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:57,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57 WrapperNode [2019-10-22 09:02:57,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:57,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:57,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:57,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:57,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:57,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:57,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:57,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:57,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:57,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:57,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:57,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:57,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/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 09:02:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:57,953 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:57,953 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 09:02:57,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:57 BoogieIcfgContainer [2019-10-22 09:02:57,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:57,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:57,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:57,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:57,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:57" (1/3) ... [2019-10-22 09:02:57,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2de914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:57, skipping insertion in model container [2019-10-22 09:02:57,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (2/3) ... [2019-10-22 09:02:57,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2de914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:57, skipping insertion in model container [2019-10-22 09:02:57,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:57" (3/3) ... [2019-10-22 09:02:57,963 INFO L109 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2019-10-22 09:02:57,972 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:57,979 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 09:02:57,989 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 09:02:58,014 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:58,014 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:58,015 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:58,015 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:58,015 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:58,015 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:58,015 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:58,015 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-22 09:02:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 09:02:58,033 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:58,033 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 09:02:58,035 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,042 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2019-10-22 09:02:58,048 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,048 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153591736] [2019-10-22 09:02:58,048 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,049 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:58,200 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 09:02:58,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153591736] [2019-10-22 09:02:58,201 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:58,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:58,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030337191] [2019-10-22 09:02:58,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:58,206 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:58,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:58,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:58,222 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2019-10-22 09:02:58,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:58,294 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-10-22 09:02:58,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:58,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 09:02:58,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:58,306 INFO L225 Difference]: With dead ends: 29 [2019-10-22 09:02:58,306 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 09:02:58,321 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:58,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 09:02:58,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-10-22 09:02:58,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-22 09:02:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-10-22 09:02:58,391 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2019-10-22 09:02:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:58,392 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-10-22 09:02:58,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:58,392 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-10-22 09:02:58,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 09:02:58,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:58,393 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 09:02:58,393 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:58,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,406 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2019-10-22 09:02:58,406 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571509191] [2019-10-22 09:02:58,406 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:58,498 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 09:02:58,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571509191] [2019-10-22 09:02:58,498 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:58,498 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:58,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509734396] [2019-10-22 09:02:58,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:58,500 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:58,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:58,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:58,501 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2019-10-22 09:02:58,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:58,554 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-10-22 09:02:58,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:58,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 09:02:58,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:58,562 INFO L225 Difference]: With dead ends: 30 [2019-10-22 09:02:58,562 INFO L226 Difference]: Without dead ends: 17 [2019-10-22 09:02:58,563 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-22 09:02:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 09:02:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 09:02:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-10-22 09:02:58,566 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 5 [2019-10-22 09:02:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:58,566 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-10-22 09:02:58,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:58,567 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-10-22 09:02:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 09:02:58,567 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:58,567 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:02:58,568 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:58,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,568 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2019-10-22 09:02:58,568 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008169787] [2019-10-22 09:02:58,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,569 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:58,594 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 09:02:58,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008169787] [2019-10-22 09:02:58,595 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:58,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:58,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188920979] [2019-10-22 09:02:58,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:58,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:58,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:58,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:58,598 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2019-10-22 09:02:58,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:58,617 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2019-10-22 09:02:58,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:58,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 09:02:58,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:58,619 INFO L225 Difference]: With dead ends: 17 [2019-10-22 09:02:58,619 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 09:02:58,619 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 09:02:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-22 09:02:58,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 09:02:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-22 09:02:58,623 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2019-10-22 09:02:58,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:58,623 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-22 09:02:58,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-22 09:02:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 09:02:58,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:58,624 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-10-22 09:02:58,624 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:58,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,625 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2019-10-22 09:02:58,625 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631657890] [2019-10-22 09:02:58,625 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,626 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:58,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631657890] [2019-10-22 09:02:58,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659320305] [2019-10-22 09:02:58,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/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 09:02:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:58,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 09:02:58,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:58,725 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:58,725 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-10-22 09:02:58,725 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549299012] [2019-10-22 09:02:58,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:58,726 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:58,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:58,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:58,727 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2019-10-22 09:02:58,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:58,759 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-10-22 09:02:58,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:58,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-10-22 09:02:58,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:58,760 INFO L225 Difference]: With dead ends: 22 [2019-10-22 09:02:58,761 INFO L226 Difference]: Without dead ends: 21 [2019-10-22 09:02:58,761 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:58,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-22 09:02:58,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-10-22 09:02:58,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 09:02:58,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-10-22 09:02:58,765 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2019-10-22 09:02:58,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:58,766 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-10-22 09:02:58,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-10-22 09:02:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 09:02:58,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:58,767 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:58,968 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:58,968 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:58,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,969 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2019-10-22 09:02:58,969 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,969 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153813651] [2019-10-22 09:02:58,969 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,969 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:02:59,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153813651] [2019-10-22 09:02:59,010 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:59,010 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:59,010 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256119382] [2019-10-22 09:02:59,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:59,011 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:59,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:59,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:59,011 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2019-10-22 09:02:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:59,038 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-10-22 09:02:59,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:59,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-10-22 09:02:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:59,040 INFO L225 Difference]: With dead ends: 33 [2019-10-22 09:02:59,040 INFO L226 Difference]: Without dead ends: 32 [2019-10-22 09:02:59,041 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:59,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-22 09:02:59,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-10-22 09:02:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 09:02:59,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-10-22 09:02:59,046 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 9 [2019-10-22 09:02:59,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:59,047 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-10-22 09:02:59,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:59,047 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-10-22 09:02:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:02:59,047 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:59,048 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:59,048 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:59,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:59,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1897256205, now seen corresponding path program 1 times [2019-10-22 09:02:59,048 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:59,049 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225542272] [2019-10-22 09:02:59,049 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,049 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:02:59,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225542272] [2019-10-22 09:02:59,087 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:59,087 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:59,087 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723332314] [2019-10-22 09:02:59,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:59,088 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:59,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:59,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:59,088 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2019-10-22 09:02:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:59,102 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2019-10-22 09:02:59,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:59,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-22 09:02:59,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:59,103 INFO L225 Difference]: With dead ends: 30 [2019-10-22 09:02:59,103 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 09:02:59,104 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 09:02:59,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 09:02:59,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 09:02:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2019-10-22 09:02:59,109 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 10 [2019-10-22 09:02:59,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:59,109 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2019-10-22 09:02:59,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:59,109 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2019-10-22 09:02:59,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 09:02:59,110 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:59,110 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2019-10-22 09:02:59,110 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:59,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:59,110 INFO L82 PathProgramCache]: Analyzing trace with hash 432560224, now seen corresponding path program 2 times [2019-10-22 09:02:59,111 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:59,111 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874210874] [2019-10-22 09:02:59,111 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,111 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:59,216 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874210874] [2019-10-22 09:02:59,216 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56655750] [2019-10-22 09:02:59,216 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/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 09:02:59,243 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-22 09:02:59,243 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:02:59,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 09:02:59,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-22 09:02:59,303 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:59,303 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2019-10-22 09:02:59,303 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597551465] [2019-10-22 09:02:59,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 09:02:59,304 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:59,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 09:02:59,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:02:59,304 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 10 states. [2019-10-22 09:02:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:59,520 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2019-10-22 09:02:59,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:02:59,522 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2019-10-22 09:02:59,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:59,524 INFO L225 Difference]: With dead ends: 43 [2019-10-22 09:02:59,524 INFO L226 Difference]: Without dead ends: 42 [2019-10-22 09:02:59,524 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2019-10-22 09:02:59,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-22 09:02:59,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 16. [2019-10-22 09:02:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 09:02:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-22 09:02:59,528 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2019-10-22 09:02:59,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:59,528 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-22 09:02:59,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 09:02:59,528 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-22 09:02:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 09:02:59,529 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:59,529 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:59,729 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:02:59,730 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:59,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:59,730 INFO L82 PathProgramCache]: Analyzing trace with hash 610055194, now seen corresponding path program 1 times [2019-10-22 09:02:59,730 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:59,730 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867132725] [2019-10-22 09:02:59,731 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,731 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:02:59,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867132725] [2019-10-22 09:02:59,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574390607] [2019-10-22 09:02:59,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/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 09:02:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:59,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 09:02:59,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:02:59,811 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:59,811 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2019-10-22 09:02:59,812 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146664375] [2019-10-22 09:02:59,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:02:59,812 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:59,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:02:59,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:59,813 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2019-10-22 09:02:59,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:59,910 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-10-22 09:02:59,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:02:59,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-10-22 09:02:59,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:59,912 INFO L225 Difference]: With dead ends: 34 [2019-10-22 09:02:59,912 INFO L226 Difference]: Without dead ends: 27 [2019-10-22 09:02:59,912 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:02:59,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-22 09:02:59,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-10-22 09:02:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-22 09:02:59,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-10-22 09:02:59,918 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2019-10-22 09:02:59,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:59,918 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-10-22 09:02:59,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:02:59,919 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-10-22 09:02:59,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:02:59,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:59,919 INFO L380 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2019-10-22 09:03:00,120 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:03:00,120 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:03:00,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:03:00,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1201123269, now seen corresponding path program 2 times [2019-10-22 09:03:00,121 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:03:00,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286882416] [2019-10-22 09:03:00,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:00,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:00,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:03:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-22 09:03:00,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286882416] [2019-10-22 09:03:00,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649128253] [2019-10-22 09:03:00,169 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/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 09:03:00,195 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-22 09:03:00,196 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:03:00,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:03:00,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:03:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-22 09:03:00,223 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:03:00,223 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2] total 6 [2019-10-22 09:03:00,223 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284867797] [2019-10-22 09:03:00,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:03:00,223 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:03:00,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:03:00,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:03:00,224 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2019-10-22 09:03:00,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:03:00,304 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2019-10-22 09:03:00,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:03:00,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-10-22 09:03:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:03:00,306 INFO L225 Difference]: With dead ends: 36 [2019-10-22 09:03:00,306 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:03:00,307 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:03:00,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:03:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:03:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:03:00,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:03:00,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-10-22 09:03:00,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:03:00,308 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:03:00,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:03:00,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:03:00,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:03:00,517 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:03:00,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 09:03:00,651 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 09:03:00,652 INFO L446 ceAbstractionStarter]: At program point L29(lines 13 30) the Hoare annotation is: true [2019-10-22 09:03:00,652 INFO L443 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-10-22 09:03:00,652 INFO L443 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-10-22 09:03:00,652 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 26) no Hoare annotation was computed. [2019-10-22 09:03:00,652 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2019-10-22 09:03:00,653 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-10-22 09:03:00,653 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 20 27) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~m~0 2147483646)) (.cse1 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse2 (<= 0 ULTIMATE.start_main_~j~0)) (.cse3 (<= 0 ULTIMATE.start_main_~i~0))) (or (and .cse0 .cse1 (<= 1 ULTIMATE.start_main_~m~0) .cse2 (<= ULTIMATE.start_main_~i~0 2147483646) .cse3) (and .cse0 .cse1 (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~m~0) .cse2 .cse3))) [2019-10-22 09:03:00,653 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 28) no Hoare annotation was computed. [2019-10-22 09:03:00,653 INFO L443 ceAbstractionStarter]: For program point L17-1(lines 17 28) no Hoare annotation was computed. [2019-10-22 09:03:00,653 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 09:03:00,653 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 09:03:00,653 INFO L443 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-10-22 09:03:00,654 INFO L443 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-10-22 09:03:00,654 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2019-10-22 09:03:00,654 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-10-22 09:03:00,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:03:00 BoogieIcfgContainer [2019-10-22 09:03:00,668 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:03:00,668 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:03:00,668 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:03:00,668 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:03:00,669 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:57" (3/4) ... [2019-10-22 09:03:00,672 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:03:00,681 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 09:03:00,681 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 09:03:00,721 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6f0f43ee-999d-4979-863b-9ebaea6b7055/bin/uautomizer/witness.graphml [2019-10-22 09:03:00,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:03:00,723 INFO L168 Benchmark]: Toolchain (without parser) took 3340.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 950.1 MB in the beginning and 927.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 156.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,723 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:03:00,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -177.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.57 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 09:03:00,725 INFO L168 Benchmark]: Boogie Preprocessor took 20.36 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 09:03:00,725 INFO L168 Benchmark]: RCFGBuilder took 251.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,725 INFO L168 Benchmark]: TraceAbstraction took 2712.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 934.0 MB in the end (delta: 175.3 MB). Peak memory consumption was 175.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,726 INFO L168 Benchmark]: Witness Printer took 53.26 ms. Allocated memory is still 1.2 GB. Free memory was 934.0 MB in the beginning and 927.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,729 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 268.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -177.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.57 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 20.36 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 251.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2712.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 934.0 MB in the end (delta: 175.3 MB). Peak memory consumption was 175.3 MB. Max. memory is 11.5 GB. * Witness Printer took 53.26 ms. Allocated memory is still 1.2 GB. Free memory was 934.0 MB in the beginning and 927.0 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: 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 Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((m <= 2147483646 && n <= 2147483647) && 1 <= m) && 0 <= j) && i <= 2147483646) && 0 <= i) || ((((m <= 2147483646 && n <= 2147483647) && j + 1 <= m) && 0 <= j) && 0 <= i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 66 SDtfs, 141 SDslu, 30 SDs, 0 SdLazy, 125 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, 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, 9 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 13 NumberOfFragments, 39 HoareAnnotationTreeSize, 2 FomulaSimplifications, 810 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 155 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 6306 SizeOfPredicates, 3 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 56/124 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...