./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 0455ba49274114922cfe1b7739d9cb0a89e6c868 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:05:01,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:05:01,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:05:01,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:05:01,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:05:01,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:05:01,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:05:01,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:05:01,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:05:01,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:05:01,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:05:01,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:05:01,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:05:01,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:05:01,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:05:01,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:05:01,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:05:01,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:05:01,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:05:01,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:05:01,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:05:01,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:05:01,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:05:01,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:05:01,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:05:01,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:05:01,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:05:01,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:05:01,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:05:01,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:05:01,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:05:01,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:05:01,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:05:01,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:05:01,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:05:01,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:05:01,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:05:01,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:05:01,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:05:01,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:05:01,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:05:01,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-12-07 17:05:01,597 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:05:01,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:05:01,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:05:01,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:05:01,599 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:05:01,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:05:01,599 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:05:01,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:05:01,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:05:01,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:05:01,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:05:01,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:05:01,600 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 17:05:01,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:05:01,600 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:05:01,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:05:01,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:05:01,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:05:01,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:05:01,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:05:01,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:05:01,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:05:01,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:05:01,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:05:01,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:05:01,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:05:01,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:05:01,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:05:01,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2019-12-07 17:05:01,700 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:05:01,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:05:01,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:05:01,711 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:05:01,711 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:05:01,711 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2019-12-07 17:05:01,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/data/0bb48014c/f4e7bbd1218b45af9b3c260f0fd28462/FLAGa68d4c26f [2019-12-07 17:05:02,243 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:05:02,243 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2019-12-07 17:05:02,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/data/0bb48014c/f4e7bbd1218b45af9b3c260f0fd28462/FLAGa68d4c26f [2019-12-07 17:05:02,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/data/0bb48014c/f4e7bbd1218b45af9b3c260f0fd28462 [2019-12-07 17:05:02,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:05:02,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:05:02,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:05:02,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:05:02,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:05:02,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:05:02" (1/1) ... [2019-12-07 17:05:02,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@514aafbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02, skipping insertion in model container [2019-12-07 17:05:02,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:05:02" (1/1) ... [2019-12-07 17:05:02,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:05:02,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:05:02,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:05:02,870 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:05:02,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:05:02,920 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:05:02,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02 WrapperNode [2019-12-07 17:05:02,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:05:02,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:05:02,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:05:02,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:05:02,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02" (1/1) ... [2019-12-07 17:05:02,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02" (1/1) ... [2019-12-07 17:05:02,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:05:02,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:05:02,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:05:02,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:05:02,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02" (1/1) ... [2019-12-07 17:05:02,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02" (1/1) ... [2019-12-07 17:05:02,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02" (1/1) ... [2019-12-07 17:05:02,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02" (1/1) ... [2019-12-07 17:05:02,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02" (1/1) ... [2019-12-07 17:05:02,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02" (1/1) ... [2019-12-07 17:05:02,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02" (1/1) ... [2019-12-07 17:05:02,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:05:02,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:05:02,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:05:02,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:05:02,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:02,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:05:02,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:05:03,087 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:05:03,087 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 17:05:03,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:05:03 BoogieIcfgContainer [2019-12-07 17:05:03,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:05:03,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:05:03,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:05:03,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:05:03,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:05:02" (1/3) ... [2019-12-07 17:05:03,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1f5271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:05:03, skipping insertion in model container [2019-12-07 17:05:03,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:05:02" (2/3) ... [2019-12-07 17:05:03,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1f5271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:05:03, skipping insertion in model container [2019-12-07 17:05:03,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:05:03" (3/3) ... [2019-12-07 17:05:03,093 INFO L109 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2019-12-07 17:05:03,099 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:05:03,104 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 17:05:03,111 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 17:05:03,125 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:05:03,125 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:05:03,125 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:05:03,126 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:05:03,126 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:05:03,126 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:05:03,126 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:05:03,126 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:05:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-12-07 17:05:03,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 17:05:03,139 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:03,139 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 17:05:03,140 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:03,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:03,143 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-12-07 17:05:03,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:03,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758514611] [2019-12-07 17:05:03,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:03,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758514611] [2019-12-07 17:05:03,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:05:03,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:05:03,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006388559] [2019-12-07 17:05:03,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 17:05:03,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:03,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 17:05:03,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:05:03,246 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-12-07 17:05:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:03,276 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2019-12-07 17:05:03,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 17:05:03,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 17:05:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:03,283 INFO L225 Difference]: With dead ends: 49 [2019-12-07 17:05:03,284 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 17:05:03,286 INFO L630 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 [2019-12-07 17:05:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 17:05:03,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2019-12-07 17:05:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 17:05:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-12-07 17:05:03,308 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2019-12-07 17:05:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:03,308 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-12-07 17:05:03,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 17:05:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-12-07 17:05:03,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 17:05:03,308 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:03,309 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 17:05:03,309 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:03,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:03,309 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2019-12-07 17:05:03,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:03,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045910028] [2019-12-07 17:05:03,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:03,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045910028] [2019-12-07 17:05:03,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:05:03,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 17:05:03,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023856147] [2019-12-07 17:05:03,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 17:05:03,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:03,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 17:05:03,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:05:03,324 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2019-12-07 17:05:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:03,342 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-12-07 17:05:03,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 17:05:03,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 17:05:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:03,343 INFO L225 Difference]: With dead ends: 21 [2019-12-07 17:05:03,343 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 17:05:03,344 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:05:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 17:05:03,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 17:05:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 17:05:03,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-12-07 17:05:03,347 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2019-12-07 17:05:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:03,347 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-12-07 17:05:03,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 17:05:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-12-07 17:05:03,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 17:05:03,348 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:03,348 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 17:05:03,348 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:03,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:03,348 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2019-12-07 17:05:03,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:03,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629113821] [2019-12-07 17:05:03,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:03,360 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629113821] [2019-12-07 17:05:03,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:05:03,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 17:05:03,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955359355] [2019-12-07 17:05:03,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 17:05:03,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:03,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 17:05:03,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:05:03,362 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2019-12-07 17:05:03,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:03,378 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-12-07 17:05:03,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 17:05:03,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-07 17:05:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:03,380 INFO L225 Difference]: With dead ends: 25 [2019-12-07 17:05:03,380 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 17:05:03,380 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:05:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 17:05:03,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2019-12-07 17:05:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 17:05:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-12-07 17:05:03,383 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2019-12-07 17:05:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:03,383 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-12-07 17:05:03,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 17:05:03,384 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-12-07 17:05:03,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 17:05:03,384 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:03,384 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:05:03,384 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:03,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:03,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1365891962, now seen corresponding path program 1 times [2019-12-07 17:05:03,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:03,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847378888] [2019-12-07 17:05:03,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:03,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847378888] [2019-12-07 17:05:03,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:05:03,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 17:05:03,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245242238] [2019-12-07 17:05:03,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 17:05:03,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:03,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 17:05:03,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:05:03,403 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2019-12-07 17:05:03,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:03,411 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-12-07 17:05:03,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 17:05:03,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-07 17:05:03,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:03,412 INFO L225 Difference]: With dead ends: 18 [2019-12-07 17:05:03,412 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 17:05:03,413 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:05:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 17:05:03,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 17:05:03,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 17:05:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-12-07 17:05:03,415 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2019-12-07 17:05:03,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:03,415 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-12-07 17:05:03,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 17:05:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-12-07 17:05:03,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:05:03,416 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:03,416 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:05:03,416 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:03,416 INFO L82 PathProgramCache]: Analyzing trace with hash -767237628, now seen corresponding path program 1 times [2019-12-07 17:05:03,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:03,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757770700] [2019-12-07 17:05:03,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:03,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757770700] [2019-12-07 17:05:03,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000047559] [2019-12-07 17:05:03,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:03,456 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 17:05:03,459 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:03,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 17:05:03,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2019-12-07 17:05:03,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921569678] [2019-12-07 17:05:03,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:05:03,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:03,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:05:03,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:05:03,484 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2019-12-07 17:05:03,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:03,500 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-12-07 17:05:03,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:05:03,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 17:05:03,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:03,501 INFO L225 Difference]: With dead ends: 26 [2019-12-07 17:05:03,501 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 17:05:03,502 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:05:03,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 17:05:03,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-12-07 17:05:03,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 17:05:03,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-12-07 17:05:03,505 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 10 [2019-12-07 17:05:03,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:03,505 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-12-07 17:05:03,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:05:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-12-07 17:05:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:05:03,506 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:03,506 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 17:05:03,706 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:03,707 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:03,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:03,707 INFO L82 PathProgramCache]: Analyzing trace with hash -767237820, now seen corresponding path program 1 times [2019-12-07 17:05:03,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:03,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184922222] [2019-12-07 17:05:03,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:03,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184922222] [2019-12-07 17:05:03,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501313272] [2019-12-07 17:05:03,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:03,775 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 17:05:03,776 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:03,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:03,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-12-07 17:05:03,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422046055] [2019-12-07 17:05:03,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:05:03,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:03,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:05:03,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:05:03,779 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 4 states. [2019-12-07 17:05:03,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:03,800 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2019-12-07 17:05:03,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:05:03,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 17:05:03,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:03,801 INFO L225 Difference]: With dead ends: 40 [2019-12-07 17:05:03,801 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 17:05:03,801 INFO L630 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 [2019-12-07 17:05:03,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 17:05:03,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2019-12-07 17:05:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 17:05:03,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-12-07 17:05:03,806 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 10 [2019-12-07 17:05:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:03,806 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-12-07 17:05:03,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:05:03,806 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-12-07 17:05:03,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 17:05:03,806 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:03,806 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:05:04,007 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:04,008 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:04,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1419016103, now seen corresponding path program 1 times [2019-12-07 17:05:04,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:04,010 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663184678] [2019-12-07 17:05:04,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:04,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663184678] [2019-12-07 17:05:04,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93845016] [2019-12-07 17:05:04,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:04,043 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 17:05:04,044 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:04,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:04,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-12-07 17:05:04,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719528642] [2019-12-07 17:05:04,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:05:04,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:04,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:05:04,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:05:04,057 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 6 states. [2019-12-07 17:05:04,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:04,078 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2019-12-07 17:05:04,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:05:04,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-07 17:05:04,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:04,079 INFO L225 Difference]: With dead ends: 61 [2019-12-07 17:05:04,079 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 17:05:04,079 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:05:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 17:05:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-12-07 17:05:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 17:05:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-12-07 17:05:04,083 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 12 [2019-12-07 17:05:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:04,083 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2019-12-07 17:05:04,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:05:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2019-12-07 17:05:04,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 17:05:04,084 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:04,084 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1] [2019-12-07 17:05:04,284 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:04,285 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:04,286 INFO L82 PathProgramCache]: Analyzing trace with hash -907820867, now seen corresponding path program 2 times [2019-12-07 17:05:04,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:04,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258571411] [2019-12-07 17:05:04,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:04,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258571411] [2019-12-07 17:05:04,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729857272] [2019-12-07 17:05:04,372 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:04,407 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:05:04,407 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:04,408 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:05:04,409 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:04,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:04,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-12-07 17:05:04,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845267582] [2019-12-07 17:05:04,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:05:04,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:04,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:05:04,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:05:04,416 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 5 states. [2019-12-07 17:05:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:04,453 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2019-12-07 17:05:04,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:05:04,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-12-07 17:05:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:04,455 INFO L225 Difference]: With dead ends: 36 [2019-12-07 17:05:04,455 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 17:05:04,455 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:05:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 17:05:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-12-07 17:05:04,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 17:05:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-12-07 17:05:04,462 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 16 [2019-12-07 17:05:04,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:04,462 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2019-12-07 17:05:04,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:05:04,462 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2019-12-07 17:05:04,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 17:05:04,463 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:04,463 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1] [2019-12-07 17:05:04,664 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:04,665 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:04,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:04,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1586405002, now seen corresponding path program 3 times [2019-12-07 17:05:04,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:04,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965047160] [2019-12-07 17:05:04,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:04,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965047160] [2019-12-07 17:05:04,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089824718] [2019-12-07 17:05:04,732 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:04,749 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 17:05:04,749 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:04,749 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 17:05:04,750 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:04,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:04,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-12-07 17:05:04,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492501787] [2019-12-07 17:05:04,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:05:04,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:04,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:05:04,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:05:04,755 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 6 states. [2019-12-07 17:05:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:04,783 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2019-12-07 17:05:04,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:05:04,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-12-07 17:05:04,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:04,784 INFO L225 Difference]: With dead ends: 84 [2019-12-07 17:05:04,784 INFO L226 Difference]: Without dead ends: 83 [2019-12-07 17:05:04,785 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:05:04,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-12-07 17:05:04,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2019-12-07 17:05:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-12-07 17:05:04,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2019-12-07 17:05:04,790 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 22 [2019-12-07 17:05:04,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:04,790 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2019-12-07 17:05:04,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:05:04,791 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2019-12-07 17:05:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 17:05:04,791 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:04,791 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1] [2019-12-07 17:05:04,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:04,993 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:04,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:04,994 INFO L82 PathProgramCache]: Analyzing trace with hash -89664657, now seen corresponding path program 4 times [2019-12-07 17:05:04,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:04,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4127364] [2019-12-07 17:05:04,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:05,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4127364] [2019-12-07 17:05:05,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731440144] [2019-12-07 17:05:05,083 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:05,104 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:05:05,104 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:05,105 INFO L264 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:05:05,106 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:05,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:05,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-12-07 17:05:05,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651891279] [2019-12-07 17:05:05,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:05:05,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:05,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:05:05,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:05:05,116 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 7 states. [2019-12-07 17:05:05,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:05,155 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2019-12-07 17:05:05,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:05:05,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-12-07 17:05:05,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:05,156 INFO L225 Difference]: With dead ends: 145 [2019-12-07 17:05:05,156 INFO L226 Difference]: Without dead ends: 144 [2019-12-07 17:05:05,157 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:05:05,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-12-07 17:05:05,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 90. [2019-12-07 17:05:05,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-12-07 17:05:05,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2019-12-07 17:05:05,164 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 28 [2019-12-07 17:05:05,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:05,164 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2019-12-07 17:05:05,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:05:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2019-12-07 17:05:05,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 17:05:05,165 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:05,166 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1] [2019-12-07 17:05:05,366 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:05,367 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:05,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:05,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1835149044, now seen corresponding path program 2 times [2019-12-07 17:05:05,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:05,367 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304764007] [2019-12-07 17:05:05,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:05,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304764007] [2019-12-07 17:05:05,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333491501] [2019-12-07 17:05:05,433 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:05,452 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:05:05,452 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:05,452 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 17:05:05,454 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 17:05:05,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:05,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-12-07 17:05:05,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340567174] [2019-12-07 17:05:05,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:05:05,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:05,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:05:05,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:05:05,460 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand 7 states. [2019-12-07 17:05:05,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:05,481 INFO L93 Difference]: Finished difference Result 124 states and 141 transitions. [2019-12-07 17:05:05,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:05:05,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2019-12-07 17:05:05,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:05,482 INFO L225 Difference]: With dead ends: 124 [2019-12-07 17:05:05,482 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 17:05:05,483 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:05:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 17:05:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2019-12-07 17:05:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 17:05:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2019-12-07 17:05:05,486 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 30 [2019-12-07 17:05:05,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:05,486 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2019-12-07 17:05:05,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:05:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2019-12-07 17:05:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-12-07 17:05:05,487 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:05,487 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1] [2019-12-07 17:05:05,687 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:05,689 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:05,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:05,690 INFO L82 PathProgramCache]: Analyzing trace with hash 661989032, now seen corresponding path program 5 times [2019-12-07 17:05:05,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:05,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707849923] [2019-12-07 17:05:05,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:05,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707849923] [2019-12-07 17:05:05,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670747226] [2019-12-07 17:05:05,823 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:05,846 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-12-07 17:05:05,846 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:05,847 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 17:05:05,848 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:05,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:05,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-12-07 17:05:05,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938633549] [2019-12-07 17:05:05,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 17:05:05,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:05,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 17:05:05,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:05:05,855 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 8 states. [2019-12-07 17:05:05,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:05,911 INFO L93 Difference]: Finished difference Result 130 states and 146 transitions. [2019-12-07 17:05:05,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 17:05:05,912 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-12-07 17:05:05,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:05,913 INFO L225 Difference]: With dead ends: 130 [2019-12-07 17:05:05,913 INFO L226 Difference]: Without dead ends: 129 [2019-12-07 17:05:05,913 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:05:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-12-07 17:05:05,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2019-12-07 17:05:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-12-07 17:05:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2019-12-07 17:05:05,920 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 34 [2019-12-07 17:05:05,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:05,921 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2019-12-07 17:05:05,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 17:05:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2019-12-07 17:05:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-07 17:05:05,922 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:05,922 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1] [2019-12-07 17:05:06,122 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:06,123 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:06,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:06,123 INFO L82 PathProgramCache]: Analyzing trace with hash 855337761, now seen corresponding path program 6 times [2019-12-07 17:05:06,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:06,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512995228] [2019-12-07 17:05:06,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:06,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512995228] [2019-12-07 17:05:06,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4827660] [2019-12-07 17:05:06,199 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:06,220 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-12-07 17:05:06,220 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:06,221 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:05:06,223 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:06,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:06,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-12-07 17:05:06,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778231327] [2019-12-07 17:05:06,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 17:05:06,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:06,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 17:05:06,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:05:06,232 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand 9 states. [2019-12-07 17:05:06,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:06,287 INFO L93 Difference]: Finished difference Result 221 states and 254 transitions. [2019-12-07 17:05:06,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 17:05:06,287 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2019-12-07 17:05:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:06,288 INFO L225 Difference]: With dead ends: 221 [2019-12-07 17:05:06,288 INFO L226 Difference]: Without dead ends: 220 [2019-12-07 17:05:06,289 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:05:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2019-12-07 17:05:06,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 132. [2019-12-07 17:05:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-12-07 17:05:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2019-12-07 17:05:06,297 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 40 [2019-12-07 17:05:06,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:06,298 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2019-12-07 17:05:06,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 17:05:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2019-12-07 17:05:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-12-07 17:05:06,299 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:06,299 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1] [2019-12-07 17:05:06,499 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:06,500 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:06,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:06,501 INFO L82 PathProgramCache]: Analyzing trace with hash 74075198, now seen corresponding path program 3 times [2019-12-07 17:05:06,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:06,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139259794] [2019-12-07 17:05:06,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:06,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139259794] [2019-12-07 17:05:06,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646446938] [2019-12-07 17:05:06,589 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:06,606 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 17:05:06,607 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:06,607 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:05:06,608 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-12-07 17:05:06,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:06,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2019-12-07 17:05:06,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842965566] [2019-12-07 17:05:06,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 17:05:06,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:06,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 17:05:06,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-12-07 17:05:06,634 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand 12 states. [2019-12-07 17:05:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:06,671 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2019-12-07 17:05:06,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 17:05:06,672 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2019-12-07 17:05:06,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:06,672 INFO L225 Difference]: With dead ends: 175 [2019-12-07 17:05:06,672 INFO L226 Difference]: Without dead ends: 70 [2019-12-07 17:05:06,673 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-12-07 17:05:06,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-12-07 17:05:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2019-12-07 17:05:06,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-12-07 17:05:06,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2019-12-07 17:05:06,675 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 42 [2019-12-07 17:05:06,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:06,675 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2019-12-07 17:05:06,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 17:05:06,675 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2019-12-07 17:05:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-07 17:05:06,676 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:06,676 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1] [2019-12-07 17:05:06,877 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:06,878 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:06,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:06,879 INFO L82 PathProgramCache]: Analyzing trace with hash 714125530, now seen corresponding path program 7 times [2019-12-07 17:05:06,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:06,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65579107] [2019-12-07 17:05:06,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:07,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65579107] [2019-12-07 17:05:07,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661920874] [2019-12-07 17:05:07,088 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:07,148 INFO L264 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 17:05:07,151 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:07,165 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:07,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:07,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-12-07 17:05:07,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376284846] [2019-12-07 17:05:07,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 17:05:07,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:07,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 17:05:07,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:05:07,168 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 10 states. [2019-12-07 17:05:07,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:07,203 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2019-12-07 17:05:07,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 17:05:07,203 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2019-12-07 17:05:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:07,204 INFO L225 Difference]: With dead ends: 72 [2019-12-07 17:05:07,204 INFO L226 Difference]: Without dead ends: 71 [2019-12-07 17:05:07,204 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:05:07,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-12-07 17:05:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2019-12-07 17:05:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-12-07 17:05:07,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2019-12-07 17:05:07,206 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 46 [2019-12-07 17:05:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:07,207 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2019-12-07 17:05:07,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 17:05:07,207 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2019-12-07 17:05:07,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-12-07 17:05:07,208 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:07,208 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1] [2019-12-07 17:05:07,408 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:07,409 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:07,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1497430061, now seen corresponding path program 8 times [2019-12-07 17:05:07,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:07,411 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214917555] [2019-12-07 17:05:07,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:07,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214917555] [2019-12-07 17:05:07,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855953328] [2019-12-07 17:05:07,498 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:07,518 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:05:07,518 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:07,519 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 17:05:07,520 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:07,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:07,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-12-07 17:05:07,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310861146] [2019-12-07 17:05:07,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 17:05:07,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:07,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 17:05:07,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-12-07 17:05:07,528 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 11 states. [2019-12-07 17:05:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:07,592 INFO L93 Difference]: Finished difference Result 245 states and 278 transitions. [2019-12-07 17:05:07,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 17:05:07,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2019-12-07 17:05:07,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:07,593 INFO L225 Difference]: With dead ends: 245 [2019-12-07 17:05:07,593 INFO L226 Difference]: Without dead ends: 244 [2019-12-07 17:05:07,594 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-12-07 17:05:07,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-12-07 17:05:07,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 225. [2019-12-07 17:05:07,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-12-07 17:05:07,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 257 transitions. [2019-12-07 17:05:07,601 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 257 transitions. Word has length 52 [2019-12-07 17:05:07,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:07,601 INFO L462 AbstractCegarLoop]: Abstraction has 225 states and 257 transitions. [2019-12-07 17:05:07,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 17:05:07,601 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 257 transitions. [2019-12-07 17:05:07,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-12-07 17:05:07,602 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:07,602 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1] [2019-12-07 17:05:07,802 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:07,803 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:07,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:07,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1807450100, now seen corresponding path program 9 times [2019-12-07 17:05:07,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:07,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352360859] [2019-12-07 17:05:07,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:07,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352360859] [2019-12-07 17:05:07,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974601842] [2019-12-07 17:05:07,907 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:07,933 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-12-07 17:05:07,934 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:07,934 INFO L264 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 17:05:07,935 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:07,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:07,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-12-07 17:05:07,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853430198] [2019-12-07 17:05:07,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 17:05:07,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:07,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 17:05:07,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-12-07 17:05:07,945 INFO L87 Difference]: Start difference. First operand 225 states and 257 transitions. Second operand 12 states. [2019-12-07 17:05:08,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:08,011 INFO L93 Difference]: Finished difference Result 428 states and 494 transitions. [2019-12-07 17:05:08,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 17:05:08,011 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2019-12-07 17:05:08,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:08,014 INFO L225 Difference]: With dead ends: 428 [2019-12-07 17:05:08,014 INFO L226 Difference]: Without dead ends: 427 [2019-12-07 17:05:08,014 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-12-07 17:05:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-12-07 17:05:08,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 246. [2019-12-07 17:05:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2019-12-07 17:05:08,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 282 transitions. [2019-12-07 17:05:08,022 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 282 transitions. Word has length 58 [2019-12-07 17:05:08,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:08,022 INFO L462 AbstractCegarLoop]: Abstraction has 246 states and 282 transitions. [2019-12-07 17:05:08,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 17:05:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 282 transitions. [2019-12-07 17:05:08,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-12-07 17:05:08,023 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:08,023 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1] [2019-12-07 17:05:08,224 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:08,224 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:08,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:08,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1024665989, now seen corresponding path program 10 times [2019-12-07 17:05:08,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:08,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146881298] [2019-12-07 17:05:08,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:08,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146881298] [2019-12-07 17:05:08,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129038307] [2019-12-07 17:05:08,335 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:08,356 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:05:08,356 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:08,356 INFO L264 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 17:05:08,358 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:08,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:08,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-12-07 17:05:08,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933735862] [2019-12-07 17:05:08,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 17:05:08,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:08,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 17:05:08,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-12-07 17:05:08,367 INFO L87 Difference]: Start difference. First operand 246 states and 282 transitions. Second operand 13 states. [2019-12-07 17:05:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:08,436 INFO L93 Difference]: Finished difference Result 472 states and 546 transitions. [2019-12-07 17:05:08,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 17:05:08,437 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2019-12-07 17:05:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:08,440 INFO L225 Difference]: With dead ends: 472 [2019-12-07 17:05:08,440 INFO L226 Difference]: Without dead ends: 471 [2019-12-07 17:05:08,440 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-12-07 17:05:08,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-12-07 17:05:08,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 267. [2019-12-07 17:05:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2019-12-07 17:05:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 307 transitions. [2019-12-07 17:05:08,449 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 307 transitions. Word has length 64 [2019-12-07 17:05:08,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:08,449 INFO L462 AbstractCegarLoop]: Abstraction has 267 states and 307 transitions. [2019-12-07 17:05:08,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 17:05:08,450 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 307 transitions. [2019-12-07 17:05:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-12-07 17:05:08,450 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:08,450 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 8, 8, 8, 3, 3, 3, 1, 1] [2019-12-07 17:05:08,651 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:08,651 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:08,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:08,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1756468196, now seen corresponding path program 4 times [2019-12-07 17:05:08,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:08,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255266077] [2019-12-07 17:05:08,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:08,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255266077] [2019-12-07 17:05:08,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632330647] [2019-12-07 17:05:08,840 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:08,862 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:05:08,862 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:08,863 INFO L264 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 17:05:08,864 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 76 proven. 184 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 17:05:08,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:08,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2019-12-07 17:05:08,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173323859] [2019-12-07 17:05:08,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 17:05:08,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:08,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 17:05:08,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-12-07 17:05:08,876 INFO L87 Difference]: Start difference. First operand 267 states and 307 transitions. Second operand 13 states. [2019-12-07 17:05:08,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:08,922 INFO L93 Difference]: Finished difference Result 313 states and 359 transitions. [2019-12-07 17:05:08,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 17:05:08,923 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2019-12-07 17:05:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:08,923 INFO L225 Difference]: With dead ends: 313 [2019-12-07 17:05:08,923 INFO L226 Difference]: Without dead ends: 91 [2019-12-07 17:05:08,924 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-12-07 17:05:08,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-12-07 17:05:08,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2019-12-07 17:05:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-12-07 17:05:08,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2019-12-07 17:05:08,927 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 66 [2019-12-07 17:05:08,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:08,928 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2019-12-07 17:05:08,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 17:05:08,928 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2019-12-07 17:05:08,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-12-07 17:05:08,928 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:08,928 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1] [2019-12-07 17:05:09,128 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:09,129 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:09,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:09,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1856957378, now seen corresponding path program 11 times [2019-12-07 17:05:09,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:09,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271837327] [2019-12-07 17:05:09,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:09,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271837327] [2019-12-07 17:05:09,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691875428] [2019-12-07 17:05:09,213 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:09,239 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-12-07 17:05:09,239 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:09,240 INFO L264 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 17:05:09,241 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:09,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:09,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-12-07 17:05:09,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534790823] [2019-12-07 17:05:09,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 17:05:09,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:09,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 17:05:09,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-12-07 17:05:09,254 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand 14 states. [2019-12-07 17:05:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:09,340 INFO L93 Difference]: Finished difference Result 332 states and 377 transitions. [2019-12-07 17:05:09,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 17:05:09,340 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2019-12-07 17:05:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:09,342 INFO L225 Difference]: With dead ends: 332 [2019-12-07 17:05:09,342 INFO L226 Difference]: Without dead ends: 331 [2019-12-07 17:05:09,342 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-12-07 17:05:09,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2019-12-07 17:05:09,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 306. [2019-12-07 17:05:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2019-12-07 17:05:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 350 transitions. [2019-12-07 17:05:09,348 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 350 transitions. Word has length 70 [2019-12-07 17:05:09,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:09,349 INFO L462 AbstractCegarLoop]: Abstraction has 306 states and 350 transitions. [2019-12-07 17:05:09,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 17:05:09,349 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 350 transitions. [2019-12-07 17:05:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-12-07 17:05:09,349 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:09,349 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1] [2019-12-07 17:05:09,549 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:09,550 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:09,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1336389577, now seen corresponding path program 12 times [2019-12-07 17:05:09,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:09,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604268500] [2019-12-07 17:05:09,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:09,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604268500] [2019-12-07 17:05:09,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561802182] [2019-12-07 17:05:09,632 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:09,657 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-12-07 17:05:09,657 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:09,658 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 17:05:09,658 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:09,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:09,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-12-07 17:05:09,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026405388] [2019-12-07 17:05:09,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-07 17:05:09,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:09,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-07 17:05:09,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-12-07 17:05:09,669 INFO L87 Difference]: Start difference. First operand 306 states and 350 transitions. Second operand 15 states. [2019-12-07 17:05:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:09,766 INFO L93 Difference]: Finished difference Result 578 states and 668 transitions. [2019-12-07 17:05:09,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 17:05:09,767 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2019-12-07 17:05:09,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:09,769 INFO L225 Difference]: With dead ends: 578 [2019-12-07 17:05:09,769 INFO L226 Difference]: Without dead ends: 577 [2019-12-07 17:05:09,769 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-12-07 17:05:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2019-12-07 17:05:09,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 327. [2019-12-07 17:05:09,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2019-12-07 17:05:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 375 transitions. [2019-12-07 17:05:09,777 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 375 transitions. Word has length 76 [2019-12-07 17:05:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:09,777 INFO L462 AbstractCegarLoop]: Abstraction has 327 states and 375 transitions. [2019-12-07 17:05:09,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-07 17:05:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 375 transitions. [2019-12-07 17:05:09,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-12-07 17:05:09,778 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:09,778 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1] [2019-12-07 17:05:09,978 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:09,978 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:09,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:09,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1313411728, now seen corresponding path program 13 times [2019-12-07 17:05:09,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:09,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364650977] [2019-12-07 17:05:09,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:10,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364650977] [2019-12-07 17:05:10,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234538065] [2019-12-07 17:05:10,082 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:10,105 INFO L264 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 17:05:10,106 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:10,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:10,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-12-07 17:05:10,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105383987] [2019-12-07 17:05:10,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 17:05:10,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:10,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 17:05:10,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-12-07 17:05:10,122 INFO L87 Difference]: Start difference. First operand 327 states and 375 transitions. Second operand 16 states. [2019-12-07 17:05:10,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:10,228 INFO L93 Difference]: Finished difference Result 622 states and 720 transitions. [2019-12-07 17:05:10,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 17:05:10,228 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2019-12-07 17:05:10,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:10,231 INFO L225 Difference]: With dead ends: 622 [2019-12-07 17:05:10,231 INFO L226 Difference]: Without dead ends: 621 [2019-12-07 17:05:10,231 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-12-07 17:05:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-12-07 17:05:10,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 348. [2019-12-07 17:05:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2019-12-07 17:05:10,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 400 transitions. [2019-12-07 17:05:10,240 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 400 transitions. Word has length 82 [2019-12-07 17:05:10,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:10,240 INFO L462 AbstractCegarLoop]: Abstraction has 348 states and 400 transitions. [2019-12-07 17:05:10,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 17:05:10,240 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 400 transitions. [2019-12-07 17:05:10,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-12-07 17:05:10,241 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:10,241 INFO L410 BasicCegarLoop]: trace histogram [14, 13, 13, 11, 11, 11, 3, 3, 3, 1, 1] [2019-12-07 17:05:10,441 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:10,441 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:10,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:10,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1913708871, now seen corresponding path program 5 times [2019-12-07 17:05:10,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:10,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215471296] [2019-12-07 17:05:10,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 0 proven. 467 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:10,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215471296] [2019-12-07 17:05:10,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763249919] [2019-12-07 17:05:10,567 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/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 [2019-12-07 17:05:10,595 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-12-07 17:05:10,595 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:10,596 INFO L264 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 17:05:10,597 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 103 proven. 352 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 17:05:10,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:10,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2019-12-07 17:05:10,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803613808] [2019-12-07 17:05:10,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 17:05:10,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:10,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 17:05:10,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-12-07 17:05:10,612 INFO L87 Difference]: Start difference. First operand 348 states and 400 transitions. Second operand 16 states. [2019-12-07 17:05:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:10,664 INFO L93 Difference]: Finished difference Result 394 states and 452 transitions. [2019-12-07 17:05:10,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 17:05:10,664 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2019-12-07 17:05:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:10,665 INFO L225 Difference]: With dead ends: 394 [2019-12-07 17:05:10,665 INFO L226 Difference]: Without dead ends: 109 [2019-12-07 17:05:10,666 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-12-07 17:05:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-12-07 17:05:10,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2019-12-07 17:05:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-12-07 17:05:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2019-12-07 17:05:10,668 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 84 [2019-12-07 17:05:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:10,668 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2019-12-07 17:05:10,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 17:05:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2019-12-07 17:05:10,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-12-07 17:05:10,668 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:10,668 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1] [2019-12-07 17:05:10,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:10,869 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:10,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:10,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1372652567, now seen corresponding path program 14 times [2019-12-07 17:05:10,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:10,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480594813] [2019-12-07 17:05:10,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:10,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480594813] [2019-12-07 17:05:10,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679413575] [2019-12-07 17:05:10,983 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:11,007 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:05:11,008 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:11,008 INFO L264 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 17:05:11,010 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:11,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:11,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-12-07 17:05:11,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207186294] [2019-12-07 17:05:11,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-12-07 17:05:11,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:11,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-12-07 17:05:11,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-12-07 17:05:11,025 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand 17 states. [2019-12-07 17:05:11,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:11,179 INFO L93 Difference]: Finished difference Result 419 states and 476 transitions. [2019-12-07 17:05:11,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-07 17:05:11,180 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2019-12-07 17:05:11,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:11,182 INFO L225 Difference]: With dead ends: 419 [2019-12-07 17:05:11,182 INFO L226 Difference]: Without dead ends: 418 [2019-12-07 17:05:11,183 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-12-07 17:05:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2019-12-07 17:05:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 387. [2019-12-07 17:05:11,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2019-12-07 17:05:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 443 transitions. [2019-12-07 17:05:11,194 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 443 transitions. Word has length 88 [2019-12-07 17:05:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:11,194 INFO L462 AbstractCegarLoop]: Abstraction has 387 states and 443 transitions. [2019-12-07 17:05:11,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-12-07 17:05:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 443 transitions. [2019-12-07 17:05:11,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-12-07 17:05:11,195 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:11,195 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1] [2019-12-07 17:05:11,396 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:11,396 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:11,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:11,396 INFO L82 PathProgramCache]: Analyzing trace with hash 146181026, now seen corresponding path program 15 times [2019-12-07 17:05:11,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:11,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687219111] [2019-12-07 17:05:11,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:11,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687219111] [2019-12-07 17:05:11,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241601545] [2019-12-07 17:05:11,516 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:11,546 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-12-07 17:05:11,546 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:11,547 INFO L264 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 17:05:11,548 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:11,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:11,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-12-07 17:05:11,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720927392] [2019-12-07 17:05:11,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 17:05:11,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:11,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 17:05:11,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-12-07 17:05:11,560 INFO L87 Difference]: Start difference. First operand 387 states and 443 transitions. Second operand 18 states. [2019-12-07 17:05:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:11,679 INFO L93 Difference]: Finished difference Result 728 states and 842 transitions. [2019-12-07 17:05:11,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-12-07 17:05:11,679 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2019-12-07 17:05:11,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:11,682 INFO L225 Difference]: With dead ends: 728 [2019-12-07 17:05:11,682 INFO L226 Difference]: Without dead ends: 727 [2019-12-07 17:05:11,682 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-12-07 17:05:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2019-12-07 17:05:11,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 408. [2019-12-07 17:05:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2019-12-07 17:05:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 468 transitions. [2019-12-07 17:05:11,691 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 468 transitions. Word has length 94 [2019-12-07 17:05:11,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:11,691 INFO L462 AbstractCegarLoop]: Abstraction has 408 states and 468 transitions. [2019-12-07 17:05:11,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 17:05:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 468 transitions. [2019-12-07 17:05:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-12-07 17:05:11,692 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:11,692 INFO L410 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1] [2019-12-07 17:05:11,892 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:11,893 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:11,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:11,893 INFO L82 PathProgramCache]: Analyzing trace with hash -143151973, now seen corresponding path program 16 times [2019-12-07 17:05:11,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:11,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610216688] [2019-12-07 17:05:11,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:12,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610216688] [2019-12-07 17:05:12,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176464361] [2019-12-07 17:05:12,153 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:12,177 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:05:12,177 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:12,178 INFO L264 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-07 17:05:12,178 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:12,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:12,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-12-07 17:05:12,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463808017] [2019-12-07 17:05:12,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-07 17:05:12,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:12,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-07 17:05:12,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-12-07 17:05:12,192 INFO L87 Difference]: Start difference. First operand 408 states and 468 transitions. Second operand 19 states. [2019-12-07 17:05:12,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:12,296 INFO L93 Difference]: Finished difference Result 772 states and 894 transitions. [2019-12-07 17:05:12,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-07 17:05:12,296 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2019-12-07 17:05:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:12,299 INFO L225 Difference]: With dead ends: 772 [2019-12-07 17:05:12,299 INFO L226 Difference]: Without dead ends: 771 [2019-12-07 17:05:12,300 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-12-07 17:05:12,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2019-12-07 17:05:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 429. [2019-12-07 17:05:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-12-07 17:05:12,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 493 transitions. [2019-12-07 17:05:12,308 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 493 transitions. Word has length 100 [2019-12-07 17:05:12,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:12,309 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 493 transitions. [2019-12-07 17:05:12,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-07 17:05:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 493 transitions. [2019-12-07 17:05:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-12-07 17:05:12,309 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:12,309 INFO L410 BasicCegarLoop]: trace histogram [17, 16, 16, 14, 14, 14, 3, 3, 3, 1, 1] [2019-12-07 17:05:12,510 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:12,510 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:12,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:12,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1251901874, now seen corresponding path program 6 times [2019-12-07 17:05:12,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:12,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707373837] [2019-12-07 17:05:12,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 716 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:12,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707373837] [2019-12-07 17:05:12,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368977342] [2019-12-07 17:05:12,748 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:12,767 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-12-07 17:05:12,768 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:12,768 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 17:05:12,769 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 201 proven. 21 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2019-12-07 17:05:12,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:12,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5] total 22 [2019-12-07 17:05:12,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362903656] [2019-12-07 17:05:12,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-12-07 17:05:12,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:12,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-12-07 17:05:12,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-12-07 17:05:12,823 INFO L87 Difference]: Start difference. First operand 429 states and 493 transitions. Second operand 23 states. [2019-12-07 17:05:12,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:12,880 INFO L93 Difference]: Finished difference Result 484 states and 557 transitions. [2019-12-07 17:05:12,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-12-07 17:05:12,880 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 102 [2019-12-07 17:05:12,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:12,881 INFO L225 Difference]: With dead ends: 484 [2019-12-07 17:05:12,881 INFO L226 Difference]: Without dead ends: 136 [2019-12-07 17:05:12,881 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-12-07 17:05:12,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-12-07 17:05:12,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2019-12-07 17:05:12,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2019-12-07 17:05:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2019-12-07 17:05:12,884 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 102 [2019-12-07 17:05:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:12,884 INFO L462 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2019-12-07 17:05:12,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-12-07 17:05:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2019-12-07 17:05:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-12-07 17:05:12,885 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:12,885 INFO L410 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1] [2019-12-07 17:05:13,086 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:13,086 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:13,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:13,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1288728276, now seen corresponding path program 17 times [2019-12-07 17:05:13,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:13,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951511549] [2019-12-07 17:05:13,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:13,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951511549] [2019-12-07 17:05:13,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588262967] [2019-12-07 17:05:13,262 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:13,295 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-12-07 17:05:13,295 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:13,295 INFO L264 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 17:05:13,296 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:13,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:13,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-12-07 17:05:13,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078990360] [2019-12-07 17:05:13,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-12-07 17:05:13,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:13,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-12-07 17:05:13,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-12-07 17:05:13,311 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand 20 states. [2019-12-07 17:05:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:13,363 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2019-12-07 17:05:13,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-12-07 17:05:13,363 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 106 [2019-12-07 17:05:13,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:13,364 INFO L225 Difference]: With dead ends: 138 [2019-12-07 17:05:13,364 INFO L226 Difference]: Without dead ends: 137 [2019-12-07 17:05:13,364 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-12-07 17:05:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-12-07 17:05:13,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2019-12-07 17:05:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2019-12-07 17:05:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2019-12-07 17:05:13,367 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 106 [2019-12-07 17:05:13,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:13,367 INFO L462 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2019-12-07 17:05:13,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-12-07 17:05:13,367 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2019-12-07 17:05:13,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-12-07 17:05:13,368 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:13,368 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1] [2019-12-07 17:05:13,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:13,568 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:13,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:13,568 INFO L82 PathProgramCache]: Analyzing trace with hash -2142051763, now seen corresponding path program 18 times [2019-12-07 17:05:13,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:13,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979695338] [2019-12-07 17:05:13,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:13,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979695338] [2019-12-07 17:05:13,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974605235] [2019-12-07 17:05:13,732 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:13,763 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-12-07 17:05:13,763 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:13,764 INFO L264 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 17:05:13,765 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:13,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:13,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-12-07 17:05:13,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380541998] [2019-12-07 17:05:13,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-12-07 17:05:13,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:13,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-12-07 17:05:13,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-12-07 17:05:13,780 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand 21 states. [2019-12-07 17:05:13,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:13,944 INFO L93 Difference]: Finished difference Result 635 states and 725 transitions. [2019-12-07 17:05:13,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-12-07 17:05:13,944 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 112 [2019-12-07 17:05:13,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:13,947 INFO L225 Difference]: With dead ends: 635 [2019-12-07 17:05:13,947 INFO L226 Difference]: Without dead ends: 634 [2019-12-07 17:05:13,947 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-12-07 17:05:13,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-12-07 17:05:13,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 594. [2019-12-07 17:05:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-12-07 17:05:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 682 transitions. [2019-12-07 17:05:13,956 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 682 transitions. Word has length 112 [2019-12-07 17:05:13,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:13,956 INFO L462 AbstractCegarLoop]: Abstraction has 594 states and 682 transitions. [2019-12-07 17:05:13,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-12-07 17:05:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 682 transitions. [2019-12-07 17:05:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-12-07 17:05:13,956 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:13,956 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1] [2019-12-07 17:05:14,157 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:14,158 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:14,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:14,158 INFO L82 PathProgramCache]: Analyzing trace with hash -138078458, now seen corresponding path program 19 times [2019-12-07 17:05:14,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:14,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431169938] [2019-12-07 17:05:14,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:14,366 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431169938] [2019-12-07 17:05:14,366 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406842132] [2019-12-07 17:05:14,366 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:14,392 INFO L264 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-07 17:05:14,393 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:14,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:14,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-12-07 17:05:14,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858164341] [2019-12-07 17:05:14,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 17:05:14,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:14,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 17:05:14,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-12-07 17:05:14,409 INFO L87 Difference]: Start difference. First operand 594 states and 682 transitions. Second operand 22 states. [2019-12-07 17:05:14,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:14,553 INFO L93 Difference]: Finished difference Result 1129 states and 1308 transitions. [2019-12-07 17:05:14,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-12-07 17:05:14,553 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 118 [2019-12-07 17:05:14,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:14,559 INFO L225 Difference]: With dead ends: 1129 [2019-12-07 17:05:14,559 INFO L226 Difference]: Without dead ends: 1128 [2019-12-07 17:05:14,560 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-12-07 17:05:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2019-12-07 17:05:14,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 621. [2019-12-07 17:05:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-12-07 17:05:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 714 transitions. [2019-12-07 17:05:14,576 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 714 transitions. Word has length 118 [2019-12-07 17:05:14,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:14,576 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 714 transitions. [2019-12-07 17:05:14,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 17:05:14,576 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 714 transitions. [2019-12-07 17:05:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-12-07 17:05:14,577 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:14,577 INFO L410 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1] [2019-12-07 17:05:14,778 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:14,778 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:14,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:14,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1876878081, now seen corresponding path program 20 times [2019-12-07 17:05:14,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:14,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947982867] [2019-12-07 17:05:14,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:14,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947982867] [2019-12-07 17:05:14,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823916975] [2019-12-07 17:05:14,997 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:15,024 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:05:15,024 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:15,024 INFO L264 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-07 17:05:15,026 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:15,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:15,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2019-12-07 17:05:15,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941136314] [2019-12-07 17:05:15,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-12-07 17:05:15,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:15,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-12-07 17:05:15,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-12-07 17:05:15,044 INFO L87 Difference]: Start difference. First operand 621 states and 714 transitions. Second operand 23 states. [2019-12-07 17:05:15,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:15,230 INFO L93 Difference]: Finished difference Result 1185 states and 1374 transitions. [2019-12-07 17:05:15,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-12-07 17:05:15,231 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 124 [2019-12-07 17:05:15,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:15,235 INFO L225 Difference]: With dead ends: 1185 [2019-12-07 17:05:15,235 INFO L226 Difference]: Without dead ends: 1184 [2019-12-07 17:05:15,235 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-12-07 17:05:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2019-12-07 17:05:15,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 648. [2019-12-07 17:05:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-12-07 17:05:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 746 transitions. [2019-12-07 17:05:15,246 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 746 transitions. Word has length 124 [2019-12-07 17:05:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:15,246 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 746 transitions. [2019-12-07 17:05:15,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-12-07 17:05:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 746 transitions. [2019-12-07 17:05:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-12-07 17:05:15,247 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:15,247 INFO L410 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1] [2019-12-07 17:05:15,447 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:15,448 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:15,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1721041976, now seen corresponding path program 21 times [2019-12-07 17:05:15,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:15,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733412932] [2019-12-07 17:05:15,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:15,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733412932] [2019-12-07 17:05:15,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511921483] [2019-12-07 17:05:15,669 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:15,705 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-12-07 17:05:15,705 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:15,706 INFO L264 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 23 conjunts are in the unsatisfiable core [2019-12-07 17:05:15,707 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:15,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:15,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2019-12-07 17:05:15,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369024941] [2019-12-07 17:05:15,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-07 17:05:15,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:15,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-07 17:05:15,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-12-07 17:05:15,729 INFO L87 Difference]: Start difference. First operand 648 states and 746 transitions. Second operand 24 states. [2019-12-07 17:05:15,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:15,923 INFO L93 Difference]: Finished difference Result 1241 states and 1440 transitions. [2019-12-07 17:05:15,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-12-07 17:05:15,923 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 130 [2019-12-07 17:05:15,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:15,927 INFO L225 Difference]: With dead ends: 1241 [2019-12-07 17:05:15,928 INFO L226 Difference]: Without dead ends: 1240 [2019-12-07 17:05:15,928 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-12-07 17:05:15,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2019-12-07 17:05:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 675. [2019-12-07 17:05:15,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2019-12-07 17:05:15,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 778 transitions. [2019-12-07 17:05:15,940 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 778 transitions. Word has length 130 [2019-12-07 17:05:15,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:15,940 INFO L462 AbstractCegarLoop]: Abstraction has 675 states and 778 transitions. [2019-12-07 17:05:15,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-07 17:05:15,940 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 778 transitions. [2019-12-07 17:05:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-12-07 17:05:15,941 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:15,941 INFO L410 BasicCegarLoop]: trace histogram [22, 21, 21, 18, 18, 18, 4, 4, 4, 1, 1] [2019-12-07 17:05:16,141 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:16,141 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:16,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1212648713, now seen corresponding path program 7 times [2019-12-07 17:05:16,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:16,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351284260] [2019-12-07 17:05:16,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:16,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351284260] [2019-12-07 17:05:16,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635732805] [2019-12-07 17:05:16,332 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:16,360 INFO L264 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 17:05:16,362 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 240 proven. 954 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-12-07 17:05:16,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:16,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 23 [2019-12-07 17:05:16,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123875908] [2019-12-07 17:05:16,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-07 17:05:16,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:16,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-07 17:05:16,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-12-07 17:05:16,388 INFO L87 Difference]: Start difference. First operand 675 states and 778 transitions. Second operand 24 states. [2019-12-07 17:05:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:16,453 INFO L93 Difference]: Finished difference Result 733 states and 844 transitions. [2019-12-07 17:05:16,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-12-07 17:05:16,453 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2019-12-07 17:05:16,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:16,454 INFO L225 Difference]: With dead ends: 733 [2019-12-07 17:05:16,454 INFO L226 Difference]: Without dead ends: 163 [2019-12-07 17:05:16,455 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-12-07 17:05:16,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2019-12-07 17:05:16,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2019-12-07 17:05:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-12-07 17:05:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2019-12-07 17:05:16,457 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 132 [2019-12-07 17:05:16,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:16,458 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 163 transitions. [2019-12-07 17:05:16,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-07 17:05:16,458 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 163 transitions. [2019-12-07 17:05:16,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-12-07 17:05:16,458 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:16,459 INFO L410 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1] [2019-12-07 17:05:16,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:16,659 INFO L410 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:16,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:16,659 INFO L82 PathProgramCache]: Analyzing trace with hash -511517519, now seen corresponding path program 22 times [2019-12-07 17:05:16,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:16,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557836443] [2019-12-07 17:05:16,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:16,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557836443] [2019-12-07 17:05:16,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152101544] [2019-12-07 17:05:16,874 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:16,905 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:05:16,906 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:16,906 INFO L264 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 17:05:16,908 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:16,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:16,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2019-12-07 17:05:16,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385241064] [2019-12-07 17:05:16,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-12-07 17:05:16,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:16,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-12-07 17:05:16,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-12-07 17:05:16,928 INFO L87 Difference]: Start difference. First operand 159 states and 163 transitions. Second operand 25 states. [2019-12-07 17:05:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:17,111 INFO L93 Difference]: Finished difference Result 775 states and 885 transitions. [2019-12-07 17:05:17,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-12-07 17:05:17,111 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 136 [2019-12-07 17:05:17,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:17,114 INFO L225 Difference]: With dead ends: 775 [2019-12-07 17:05:17,114 INFO L226 Difference]: Without dead ends: 774 [2019-12-07 17:05:17,114 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-12-07 17:05:17,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-12-07 17:05:17,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 726. [2019-12-07 17:05:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2019-12-07 17:05:17,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 834 transitions. [2019-12-07 17:05:17,126 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 834 transitions. Word has length 136 [2019-12-07 17:05:17,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:17,127 INFO L462 AbstractCegarLoop]: Abstraction has 726 states and 834 transitions. [2019-12-07 17:05:17,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-12-07 17:05:17,127 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 834 transitions. [2019-12-07 17:05:17,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-12-07 17:05:17,128 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:17,128 INFO L410 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1] [2019-12-07 17:05:17,328 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:17,329 INFO L410 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:17,329 INFO L82 PathProgramCache]: Analyzing trace with hash -109005206, now seen corresponding path program 23 times [2019-12-07 17:05:17,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:17,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430580079] [2019-12-07 17:05:17,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:17,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430580079] [2019-12-07 17:05:17,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833644720] [2019-12-07 17:05:17,612 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:17,651 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-12-07 17:05:17,651 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:17,652 INFO L264 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjunts are in the unsatisfiable core [2019-12-07 17:05:17,653 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:17,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:17,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2019-12-07 17:05:17,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16421666] [2019-12-07 17:05:17,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-12-07 17:05:17,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:17,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-12-07 17:05:17,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-12-07 17:05:17,674 INFO L87 Difference]: Start difference. First operand 726 states and 834 transitions. Second operand 26 states. [2019-12-07 17:05:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:17,927 INFO L93 Difference]: Finished difference Result 1377 states and 1596 transitions. [2019-12-07 17:05:17,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-12-07 17:05:17,928 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 142 [2019-12-07 17:05:17,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:17,932 INFO L225 Difference]: With dead ends: 1377 [2019-12-07 17:05:17,932 INFO L226 Difference]: Without dead ends: 1376 [2019-12-07 17:05:17,933 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-12-07 17:05:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2019-12-07 17:05:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 753. [2019-12-07 17:05:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-12-07 17:05:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 866 transitions. [2019-12-07 17:05:17,946 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 866 transitions. Word has length 142 [2019-12-07 17:05:17,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:17,946 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 866 transitions. [2019-12-07 17:05:17,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-12-07 17:05:17,946 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 866 transitions. [2019-12-07 17:05:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-12-07 17:05:17,946 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:17,947 INFO L410 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1] [2019-12-07 17:05:18,147 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:18,147 INFO L410 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:18,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1034378909, now seen corresponding path program 24 times [2019-12-07 17:05:18,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:18,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335999368] [2019-12-07 17:05:18,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:18,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335999368] [2019-12-07 17:05:18,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674258242] [2019-12-07 17:05:18,404 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:18,450 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2019-12-07 17:05:18,450 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:18,451 INFO L264 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 26 conjunts are in the unsatisfiable core [2019-12-07 17:05:18,453 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:18,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:18,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2019-12-07 17:05:18,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152407201] [2019-12-07 17:05:18,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-12-07 17:05:18,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:18,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-12-07 17:05:18,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-12-07 17:05:18,475 INFO L87 Difference]: Start difference. First operand 753 states and 866 transitions. Second operand 27 states. [2019-12-07 17:05:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:18,754 INFO L93 Difference]: Finished difference Result 1433 states and 1662 transitions. [2019-12-07 17:05:18,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-12-07 17:05:18,754 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 148 [2019-12-07 17:05:18,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:18,760 INFO L225 Difference]: With dead ends: 1433 [2019-12-07 17:05:18,761 INFO L226 Difference]: Without dead ends: 1432 [2019-12-07 17:05:18,761 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-12-07 17:05:18,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2019-12-07 17:05:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 780. [2019-12-07 17:05:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2019-12-07 17:05:18,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 898 transitions. [2019-12-07 17:05:18,780 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 898 transitions. Word has length 148 [2019-12-07 17:05:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:18,780 INFO L462 AbstractCegarLoop]: Abstraction has 780 states and 898 transitions. [2019-12-07 17:05:18,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-12-07 17:05:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 898 transitions. [2019-12-07 17:05:18,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-12-07 17:05:18,781 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:18,781 INFO L410 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1] [2019-12-07 17:05:18,981 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:18,982 INFO L410 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:18,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:18,982 INFO L82 PathProgramCache]: Analyzing trace with hash 872983964, now seen corresponding path program 25 times [2019-12-07 17:05:18,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:18,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984138045] [2019-12-07 17:05:18,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:19,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984138045] [2019-12-07 17:05:19,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771188613] [2019-12-07 17:05:19,273 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:19,301 INFO L264 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2019-12-07 17:05:19,302 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:19,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:19,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2019-12-07 17:05:19,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374545561] [2019-12-07 17:05:19,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-07 17:05:19,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:19,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-07 17:05:19,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-12-07 17:05:19,327 INFO L87 Difference]: Start difference. First operand 780 states and 898 transitions. Second operand 28 states. [2019-12-07 17:05:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:19,584 INFO L93 Difference]: Finished difference Result 1489 states and 1728 transitions. [2019-12-07 17:05:19,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-12-07 17:05:19,584 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2019-12-07 17:05:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:19,589 INFO L225 Difference]: With dead ends: 1489 [2019-12-07 17:05:19,589 INFO L226 Difference]: Without dead ends: 1488 [2019-12-07 17:05:19,589 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-12-07 17:05:19,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2019-12-07 17:05:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 807. [2019-12-07 17:05:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2019-12-07 17:05:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 930 transitions. [2019-12-07 17:05:19,602 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 930 transitions. Word has length 154 [2019-12-07 17:05:19,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:19,603 INFO L462 AbstractCegarLoop]: Abstraction has 807 states and 930 transitions. [2019-12-07 17:05:19,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-07 17:05:19,603 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 930 transitions. [2019-12-07 17:05:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-12-07 17:05:19,603 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:19,603 INFO L410 BasicCegarLoop]: trace histogram [26, 25, 25, 22, 22, 22, 4, 4, 4, 1, 1] [2019-12-07 17:05:19,804 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:19,804 INFO L410 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:19,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:19,804 INFO L82 PathProgramCache]: Analyzing trace with hash -2022281875, now seen corresponding path program 8 times [2019-12-07 17:05:19,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:19,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746534023] [2019-12-07 17:05:19,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:20,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746534023] [2019-12-07 17:05:20,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429961296] [2019-12-07 17:05:20,098 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:20,132 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:05:20,132 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:20,133 INFO L264 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 17:05:20,135 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 292 proven. 1430 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-12-07 17:05:20,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:20,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 27 [2019-12-07 17:05:20,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343980916] [2019-12-07 17:05:20,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-07 17:05:20,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:20,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-07 17:05:20,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-12-07 17:05:20,160 INFO L87 Difference]: Start difference. First operand 807 states and 930 transitions. Second operand 28 states. [2019-12-07 17:05:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:20,231 INFO L93 Difference]: Finished difference Result 865 states and 996 transitions. [2019-12-07 17:05:20,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-12-07 17:05:20,231 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 156 [2019-12-07 17:05:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:20,232 INFO L225 Difference]: With dead ends: 865 [2019-12-07 17:05:20,232 INFO L226 Difference]: Without dead ends: 187 [2019-12-07 17:05:20,233 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-12-07 17:05:20,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2019-12-07 17:05:20,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2019-12-07 17:05:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2019-12-07 17:05:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2019-12-07 17:05:20,236 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 156 [2019-12-07 17:05:20,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:20,236 INFO L462 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2019-12-07 17:05:20,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-07 17:05:20,236 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2019-12-07 17:05:20,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-12-07 17:05:20,237 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:20,237 INFO L410 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1] [2019-12-07 17:05:20,437 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:20,437 INFO L410 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:20,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:20,438 INFO L82 PathProgramCache]: Analyzing trace with hash 868412181, now seen corresponding path program 26 times [2019-12-07 17:05:20,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:20,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407489946] [2019-12-07 17:05:20,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:20,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407489946] [2019-12-07 17:05:20,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264097618] [2019-12-07 17:05:20,713 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:20,748 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:05:20,748 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:20,749 INFO L264 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 28 conjunts are in the unsatisfiable core [2019-12-07 17:05:20,750 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:20,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:20,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2019-12-07 17:05:20,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540732343] [2019-12-07 17:05:20,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-12-07 17:05:20,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:20,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-12-07 17:05:20,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-12-07 17:05:20,776 INFO L87 Difference]: Start difference. First operand 183 states and 187 transitions. Second operand 29 states. [2019-12-07 17:05:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:21,048 INFO L93 Difference]: Finished difference Result 915 states and 1045 transitions. [2019-12-07 17:05:21,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-12-07 17:05:21,049 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 160 [2019-12-07 17:05:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:21,052 INFO L225 Difference]: With dead ends: 915 [2019-12-07 17:05:21,052 INFO L226 Difference]: Without dead ends: 914 [2019-12-07 17:05:21,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-12-07 17:05:21,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2019-12-07 17:05:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 858. [2019-12-07 17:05:21,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2019-12-07 17:05:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 986 transitions. [2019-12-07 17:05:21,062 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 986 transitions. Word has length 160 [2019-12-07 17:05:21,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:21,063 INFO L462 AbstractCegarLoop]: Abstraction has 858 states and 986 transitions. [2019-12-07 17:05:21,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-12-07 17:05:21,063 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 986 transitions. [2019-12-07 17:05:21,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-12-07 17:05:21,063 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:21,063 INFO L410 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1] [2019-12-07 17:05:21,264 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:21,264 INFO L410 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:21,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:21,264 INFO L82 PathProgramCache]: Analyzing trace with hash -588420658, now seen corresponding path program 27 times [2019-12-07 17:05:21,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:21,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256618182] [2019-12-07 17:05:21,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:21,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256618182] [2019-12-07 17:05:21,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512615189] [2019-12-07 17:05:21,552 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:21,604 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2019-12-07 17:05:21,604 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:21,605 INFO L264 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjunts are in the unsatisfiable core [2019-12-07 17:05:21,607 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:21,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:21,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2019-12-07 17:05:21,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084454894] [2019-12-07 17:05:21,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-12-07 17:05:21,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:21,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-12-07 17:05:21,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-12-07 17:05:21,635 INFO L87 Difference]: Start difference. First operand 858 states and 986 transitions. Second operand 30 states. [2019-12-07 17:05:21,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:21,952 INFO L93 Difference]: Finished difference Result 1625 states and 1884 transitions. [2019-12-07 17:05:21,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-12-07 17:05:21,952 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 166 [2019-12-07 17:05:21,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:21,957 INFO L225 Difference]: With dead ends: 1625 [2019-12-07 17:05:21,957 INFO L226 Difference]: Without dead ends: 1624 [2019-12-07 17:05:21,958 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-12-07 17:05:21,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2019-12-07 17:05:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 885. [2019-12-07 17:05:21,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2019-12-07 17:05:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1018 transitions. [2019-12-07 17:05:21,971 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1018 transitions. Word has length 166 [2019-12-07 17:05:21,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:21,971 INFO L462 AbstractCegarLoop]: Abstraction has 885 states and 1018 transitions. [2019-12-07 17:05:21,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-12-07 17:05:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1018 transitions. [2019-12-07 17:05:21,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-12-07 17:05:21,972 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:21,972 INFO L410 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1] [2019-12-07 17:05:22,172 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:22,173 INFO L410 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:22,173 INFO L82 PathProgramCache]: Analyzing trace with hash 170015175, now seen corresponding path program 28 times [2019-12-07 17:05:22,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:22,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986468411] [2019-12-07 17:05:22,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:22,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986468411] [2019-12-07 17:05:22,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313148071] [2019-12-07 17:05:22,529 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:22,566 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:05:22,566 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:22,567 INFO L264 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 30 conjunts are in the unsatisfiable core [2019-12-07 17:05:22,568 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:22,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:22,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2019-12-07 17:05:22,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047789412] [2019-12-07 17:05:22,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-12-07 17:05:22,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:22,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-12-07 17:05:22,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-12-07 17:05:22,597 INFO L87 Difference]: Start difference. First operand 885 states and 1018 transitions. Second operand 31 states. [2019-12-07 17:05:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:22,906 INFO L93 Difference]: Finished difference Result 1681 states and 1950 transitions. [2019-12-07 17:05:22,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-12-07 17:05:22,906 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 172 [2019-12-07 17:05:22,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:22,912 INFO L225 Difference]: With dead ends: 1681 [2019-12-07 17:05:22,912 INFO L226 Difference]: Without dead ends: 1680 [2019-12-07 17:05:22,912 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-12-07 17:05:22,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2019-12-07 17:05:22,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 912. [2019-12-07 17:05:22,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2019-12-07 17:05:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1050 transitions. [2019-12-07 17:05:22,926 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1050 transitions. Word has length 172 [2019-12-07 17:05:22,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:22,926 INFO L462 AbstractCegarLoop]: Abstraction has 912 states and 1050 transitions. [2019-12-07 17:05:22,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-12-07 17:05:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1050 transitions. [2019-12-07 17:05:22,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-12-07 17:05:22,927 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:22,927 INFO L410 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1] [2019-12-07 17:05:23,127 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:23,128 INFO L410 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:23,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:23,128 INFO L82 PathProgramCache]: Analyzing trace with hash 506424064, now seen corresponding path program 29 times [2019-12-07 17:05:23,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:23,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495961261] [2019-12-07 17:05:23,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:23,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:23,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495961261] [2019-12-07 17:05:23,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385452939] [2019-12-07 17:05:23,433 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:23,483 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-12-07 17:05:23,483 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:23,484 INFO L264 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 31 conjunts are in the unsatisfiable core [2019-12-07 17:05:23,485 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:23,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:23,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2019-12-07 17:05:23,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446088812] [2019-12-07 17:05:23,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-12-07 17:05:23,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:23,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-12-07 17:05:23,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-12-07 17:05:23,515 INFO L87 Difference]: Start difference. First operand 912 states and 1050 transitions. Second operand 32 states. [2019-12-07 17:05:23,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:23,836 INFO L93 Difference]: Finished difference Result 1737 states and 2016 transitions. [2019-12-07 17:05:23,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-12-07 17:05:23,836 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 178 [2019-12-07 17:05:23,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:23,842 INFO L225 Difference]: With dead ends: 1737 [2019-12-07 17:05:23,842 INFO L226 Difference]: Without dead ends: 1736 [2019-12-07 17:05:23,843 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-12-07 17:05:23,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2019-12-07 17:05:23,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 939. [2019-12-07 17:05:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2019-12-07 17:05:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1082 transitions. [2019-12-07 17:05:23,857 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1082 transitions. Word has length 178 [2019-12-07 17:05:23,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:23,857 INFO L462 AbstractCegarLoop]: Abstraction has 939 states and 1082 transitions. [2019-12-07 17:05:23,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-12-07 17:05:23,857 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1082 transitions. [2019-12-07 17:05:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-12-07 17:05:23,858 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:23,858 INFO L410 BasicCegarLoop]: trace histogram [30, 29, 29, 26, 26, 26, 4, 4, 4, 1, 1] [2019-12-07 17:05:24,058 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:24,058 INFO L410 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:24,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2099027503, now seen corresponding path program 9 times [2019-12-07 17:05:24,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:24,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480081682] [2019-12-07 17:05:24,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2373 backedges. 0 proven. 2373 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:24,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480081682] [2019-12-07 17:05:24,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712539573] [2019-12-07 17:05:24,392 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:24,412 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 17:05:24,412 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:24,413 INFO L264 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 17:05:24,414 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2373 backedges. 610 proven. 59 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2019-12-07 17:05:24,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:24,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 7] total 37 [2019-12-07 17:05:24,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249792003] [2019-12-07 17:05:24,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-12-07 17:05:24,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:24,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-12-07 17:05:24,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-12-07 17:05:24,549 INFO L87 Difference]: Start difference. First operand 939 states and 1082 transitions. Second operand 38 states. [2019-12-07 17:05:24,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:24,653 INFO L93 Difference]: Finished difference Result 1012 states and 1168 transitions. [2019-12-07 17:05:24,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-12-07 17:05:24,653 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 180 [2019-12-07 17:05:24,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:24,654 INFO L225 Difference]: With dead ends: 1012 [2019-12-07 17:05:24,654 INFO L226 Difference]: Without dead ends: 226 [2019-12-07 17:05:24,655 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-12-07 17:05:24,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2019-12-07 17:05:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225. [2019-12-07 17:05:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-12-07 17:05:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 231 transitions. [2019-12-07 17:05:24,658 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 231 transitions. Word has length 180 [2019-12-07 17:05:24,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:24,658 INFO L462 AbstractCegarLoop]: Abstraction has 225 states and 231 transitions. [2019-12-07 17:05:24,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-12-07 17:05:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 231 transitions. [2019-12-07 17:05:24,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-12-07 17:05:24,658 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:24,659 INFO L410 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1] [2019-12-07 17:05:24,859 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:24,860 INFO L410 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:24,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:24,860 INFO L82 PathProgramCache]: Analyzing trace with hash 219614585, now seen corresponding path program 30 times [2019-12-07 17:05:24,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:24,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431681054] [2019-12-07 17:05:24,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:25,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431681054] [2019-12-07 17:05:25,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242415393] [2019-12-07 17:05:25,257 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:25,308 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2019-12-07 17:05:25,308 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:25,309 INFO L264 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2019-12-07 17:05:25,310 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:25,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:25,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2019-12-07 17:05:25,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721465088] [2019-12-07 17:05:25,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-12-07 17:05:25,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:25,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-12-07 17:05:25,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-12-07 17:05:25,350 INFO L87 Difference]: Start difference. First operand 225 states and 231 transitions. Second operand 33 states. [2019-12-07 17:05:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:25,433 INFO L93 Difference]: Finished difference Result 228 states and 234 transitions. [2019-12-07 17:05:25,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-12-07 17:05:25,434 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 184 [2019-12-07 17:05:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:25,435 INFO L225 Difference]: With dead ends: 228 [2019-12-07 17:05:25,435 INFO L226 Difference]: Without dead ends: 227 [2019-12-07 17:05:25,435 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-12-07 17:05:25,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2019-12-07 17:05:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2019-12-07 17:05:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-12-07 17:05:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 231 transitions. [2019-12-07 17:05:25,437 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 231 transitions. Word has length 184 [2019-12-07 17:05:25,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:25,438 INFO L462 AbstractCegarLoop]: Abstraction has 225 states and 231 transitions. [2019-12-07 17:05:25,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-12-07 17:05:25,438 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 231 transitions. [2019-12-07 17:05:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-12-07 17:05:25,438 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:25,438 INFO L410 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1] [2019-12-07 17:05:25,639 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:25,639 INFO L410 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:25,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:25,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1525731022, now seen corresponding path program 31 times [2019-12-07 17:05:25,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:25,641 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719680812] [2019-12-07 17:05:25,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:26,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719680812] [2019-12-07 17:05:26,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549811485] [2019-12-07 17:05:26,010 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:26,042 INFO L264 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 33 conjunts are in the unsatisfiable core [2019-12-07 17:05:26,044 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:26,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:26,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2019-12-07 17:05:26,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097447000] [2019-12-07 17:05:26,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-12-07 17:05:26,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:26,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-12-07 17:05:26,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-12-07 17:05:26,076 INFO L87 Difference]: Start difference. First operand 225 states and 231 transitions. Second operand 34 states. [2019-12-07 17:05:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:26,502 INFO L93 Difference]: Finished difference Result 1428 states and 1640 transitions. [2019-12-07 17:05:26,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-12-07 17:05:26,502 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 190 [2019-12-07 17:05:26,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:26,508 INFO L225 Difference]: With dead ends: 1428 [2019-12-07 17:05:26,508 INFO L226 Difference]: Without dead ends: 1427 [2019-12-07 17:05:26,509 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-12-07 17:05:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2019-12-07 17:05:26,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1359. [2019-12-07 17:05:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2019-12-07 17:05:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1567 transitions. [2019-12-07 17:05:26,529 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1567 transitions. Word has length 190 [2019-12-07 17:05:26,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:26,529 INFO L462 AbstractCegarLoop]: Abstraction has 1359 states and 1567 transitions. [2019-12-07 17:05:26,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-12-07 17:05:26,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1567 transitions. [2019-12-07 17:05:26,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-12-07 17:05:26,530 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:26,530 INFO L410 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1] [2019-12-07 17:05:26,730 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:26,731 INFO L410 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:26,732 INFO L82 PathProgramCache]: Analyzing trace with hash 394389035, now seen corresponding path program 32 times [2019-12-07 17:05:26,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:26,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526961793] [2019-12-07 17:05:26,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:27,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526961793] [2019-12-07 17:05:27,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200869291] [2019-12-07 17:05:27,116 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:27,149 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:05:27,149 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:27,150 INFO L264 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 34 conjunts are in the unsatisfiable core [2019-12-07 17:05:27,152 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:27,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:27,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2019-12-07 17:05:27,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142719697] [2019-12-07 17:05:27,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-12-07 17:05:27,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:27,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-12-07 17:05:27,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-12-07 17:05:27,186 INFO L87 Difference]: Start difference. First operand 1359 states and 1567 transitions. Second operand 35 states. [2019-12-07 17:05:27,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:27,554 INFO L93 Difference]: Finished difference Result 2613 states and 3034 transitions. [2019-12-07 17:05:27,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-12-07 17:05:27,554 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 196 [2019-12-07 17:05:27,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:27,562 INFO L225 Difference]: With dead ends: 2613 [2019-12-07 17:05:27,562 INFO L226 Difference]: Without dead ends: 2612 [2019-12-07 17:05:27,563 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-12-07 17:05:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2019-12-07 17:05:27,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 1398. [2019-12-07 17:05:27,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1398 states. [2019-12-07 17:05:27,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1613 transitions. [2019-12-07 17:05:27,583 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1613 transitions. Word has length 196 [2019-12-07 17:05:27,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:27,583 INFO L462 AbstractCegarLoop]: Abstraction has 1398 states and 1613 transitions. [2019-12-07 17:05:27,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-12-07 17:05:27,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1613 transitions. [2019-12-07 17:05:27,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-12-07 17:05:27,584 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:27,584 INFO L410 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 1, 1] [2019-12-07 17:05:27,784 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:27,785 INFO L410 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:27,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:27,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1039319964, now seen corresponding path program 33 times [2019-12-07 17:05:27,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:27,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763014520] [2019-12-07 17:05:27,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:28,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763014520] [2019-12-07 17:05:28,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330761483] [2019-12-07 17:05:28,214 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:28,261 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2019-12-07 17:05:28,261 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:28,262 INFO L264 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 35 conjunts are in the unsatisfiable core [2019-12-07 17:05:28,263 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:28,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:28,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2019-12-07 17:05:28,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546260415] [2019-12-07 17:05:28,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-07 17:05:28,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:28,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-07 17:05:28,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-12-07 17:05:28,299 INFO L87 Difference]: Start difference. First operand 1398 states and 1613 transitions. Second operand 36 states. [2019-12-07 17:05:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:28,603 INFO L93 Difference]: Finished difference Result 2693 states and 3128 transitions. [2019-12-07 17:05:28,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-12-07 17:05:28,604 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 202 [2019-12-07 17:05:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:28,612 INFO L225 Difference]: With dead ends: 2693 [2019-12-07 17:05:28,612 INFO L226 Difference]: Without dead ends: 2692 [2019-12-07 17:05:28,613 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-12-07 17:05:28,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2019-12-07 17:05:28,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1437. [2019-12-07 17:05:28,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1437 states. [2019-12-07 17:05:28,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1659 transitions. [2019-12-07 17:05:28,629 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1659 transitions. Word has length 202 [2019-12-07 17:05:28,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:28,629 INFO L462 AbstractCegarLoop]: Abstraction has 1437 states and 1659 transitions. [2019-12-07 17:05:28,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-07 17:05:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1659 transitions. [2019-12-07 17:05:28,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-12-07 17:05:28,630 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:28,630 INFO L410 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 1, 1] [2019-12-07 17:05:28,831 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:28,831 INFO L410 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:28,832 INFO L82 PathProgramCache]: Analyzing trace with hash 931349469, now seen corresponding path program 34 times [2019-12-07 17:05:28,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:28,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729599667] [2019-12-07 17:05:28,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:29,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729599667] [2019-12-07 17:05:29,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333096932] [2019-12-07 17:05:29,267 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:29,300 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:05:29,300 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:29,302 INFO L264 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 36 conjunts are in the unsatisfiable core [2019-12-07 17:05:29,303 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:29,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:29,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2019-12-07 17:05:29,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182176593] [2019-12-07 17:05:29,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-12-07 17:05:29,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:29,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-12-07 17:05:29,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-12-07 17:05:29,341 INFO L87 Difference]: Start difference. First operand 1437 states and 1659 transitions. Second operand 37 states. [2019-12-07 17:05:29,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:29,590 INFO L93 Difference]: Finished difference Result 2773 states and 3222 transitions. [2019-12-07 17:05:29,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-12-07 17:05:29,591 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 208 [2019-12-07 17:05:29,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:29,595 INFO L225 Difference]: With dead ends: 2773 [2019-12-07 17:05:29,595 INFO L226 Difference]: Without dead ends: 2772 [2019-12-07 17:05:29,595 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-12-07 17:05:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2019-12-07 17:05:29,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 1476. [2019-12-07 17:05:29,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1476 states. [2019-12-07 17:05:29,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1705 transitions. [2019-12-07 17:05:29,613 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1705 transitions. Word has length 208 [2019-12-07 17:05:29,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:29,613 INFO L462 AbstractCegarLoop]: Abstraction has 1476 states and 1705 transitions. [2019-12-07 17:05:29,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-12-07 17:05:29,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1705 transitions. [2019-12-07 17:05:29,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-12-07 17:05:29,614 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:29,614 INFO L410 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 1, 1] [2019-12-07 17:05:29,814 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:29,815 INFO L410 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:29,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:29,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1997927274, now seen corresponding path program 35 times [2019-12-07 17:05:29,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:29,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926572688] [2019-12-07 17:05:29,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:30,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926572688] [2019-12-07 17:05:30,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592279468] [2019-12-07 17:05:30,300 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:30,355 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2019-12-07 17:05:30,356 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:30,357 INFO L264 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 37 conjunts are in the unsatisfiable core [2019-12-07 17:05:30,358 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:30,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:30,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2019-12-07 17:05:30,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043174861] [2019-12-07 17:05:30,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-12-07 17:05:30,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:30,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-12-07 17:05:30,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-12-07 17:05:30,398 INFO L87 Difference]: Start difference. First operand 1476 states and 1705 transitions. Second operand 38 states. [2019-12-07 17:05:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:30,625 INFO L93 Difference]: Finished difference Result 2853 states and 3316 transitions. [2019-12-07 17:05:30,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-12-07 17:05:30,626 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 214 [2019-12-07 17:05:30,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:30,628 INFO L225 Difference]: With dead ends: 2853 [2019-12-07 17:05:30,629 INFO L226 Difference]: Without dead ends: 2852 [2019-12-07 17:05:30,629 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-12-07 17:05:30,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2019-12-07 17:05:30,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1515. [2019-12-07 17:05:30,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1515 states. [2019-12-07 17:05:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1751 transitions. [2019-12-07 17:05:30,647 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1751 transitions. Word has length 214 [2019-12-07 17:05:30,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:30,647 INFO L462 AbstractCegarLoop]: Abstraction has 1515 states and 1751 transitions. [2019-12-07 17:05:30,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-12-07 17:05:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1751 transitions. [2019-12-07 17:05:30,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-12-07 17:05:30,648 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:30,648 INFO L410 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 1, 1] [2019-12-07 17:05:30,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:30,849 INFO L410 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:30,850 INFO L82 PathProgramCache]: Analyzing trace with hash -830757233, now seen corresponding path program 36 times [2019-12-07 17:05:30,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:30,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182559943] [2019-12-07 17:05:30,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:31,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182559943] [2019-12-07 17:05:31,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744090467] [2019-12-07 17:05:31,335 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:31,387 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2019-12-07 17:05:31,387 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:31,388 INFO L264 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 38 conjunts are in the unsatisfiable core [2019-12-07 17:05:31,390 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:31,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:31,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2019-12-07 17:05:31,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127431437] [2019-12-07 17:05:31,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-12-07 17:05:31,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:31,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-12-07 17:05:31,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-12-07 17:05:31,439 INFO L87 Difference]: Start difference. First operand 1515 states and 1751 transitions. Second operand 39 states. [2019-12-07 17:05:31,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:31,757 INFO L93 Difference]: Finished difference Result 2933 states and 3410 transitions. [2019-12-07 17:05:31,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-12-07 17:05:31,758 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 220 [2019-12-07 17:05:31,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:31,761 INFO L225 Difference]: With dead ends: 2933 [2019-12-07 17:05:31,761 INFO L226 Difference]: Without dead ends: 2932 [2019-12-07 17:05:31,762 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-12-07 17:05:31,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2019-12-07 17:05:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1554. [2019-12-07 17:05:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2019-12-07 17:05:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1797 transitions. [2019-12-07 17:05:31,790 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1797 transitions. Word has length 220 [2019-12-07 17:05:31,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:31,791 INFO L462 AbstractCegarLoop]: Abstraction has 1554 states and 1797 transitions. [2019-12-07 17:05:31,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-12-07 17:05:31,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1797 transitions. [2019-12-07 17:05:31,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-12-07 17:05:31,792 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:31,792 INFO L410 BasicCegarLoop]: trace histogram [37, 36, 36, 31, 31, 31, 6, 6, 6, 1, 1] [2019-12-07 17:05:31,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:31,993 INFO L410 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:31,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:31,994 INFO L82 PathProgramCache]: Analyzing trace with hash -337512172, now seen corresponding path program 10 times [2019-12-07 17:05:31,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:31,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144489870] [2019-12-07 17:05:31,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 0 proven. 3588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:32,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144489870] [2019-12-07 17:05:32,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634263909] [2019-12-07 17:05:32,477 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:32,512 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:05:32,512 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:32,513 INFO L264 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 33 conjunts are in the unsatisfiable core [2019-12-07 17:05:32,515 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 661 proven. 2852 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-12-07 17:05:32,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:32,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 33] total 38 [2019-12-07 17:05:32,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134874355] [2019-12-07 17:05:32,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-12-07 17:05:32,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:32,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-12-07 17:05:32,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-12-07 17:05:32,554 INFO L87 Difference]: Start difference. First operand 1554 states and 1797 transitions. Second operand 39 states. [2019-12-07 17:05:32,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:32,641 INFO L93 Difference]: Finished difference Result 1636 states and 1891 transitions. [2019-12-07 17:05:32,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-12-07 17:05:32,641 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 222 [2019-12-07 17:05:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:32,642 INFO L225 Difference]: With dead ends: 1636 [2019-12-07 17:05:32,642 INFO L226 Difference]: Without dead ends: 265 [2019-12-07 17:05:32,643 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-12-07 17:05:32,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-12-07 17:05:32,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2019-12-07 17:05:32,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2019-12-07 17:05:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 267 transitions. [2019-12-07 17:05:32,645 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 267 transitions. Word has length 222 [2019-12-07 17:05:32,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:32,645 INFO L462 AbstractCegarLoop]: Abstraction has 261 states and 267 transitions. [2019-12-07 17:05:32,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-12-07 17:05:32,645 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 267 transitions. [2019-12-07 17:05:32,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-12-07 17:05:32,646 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:32,646 INFO L410 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 1, 1] [2019-12-07 17:05:32,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:32,847 INFO L410 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:32,848 INFO L82 PathProgramCache]: Analyzing trace with hash -257547832, now seen corresponding path program 37 times [2019-12-07 17:05:32,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:32,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041837191] [2019-12-07 17:05:32,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:33,329 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041837191] [2019-12-07 17:05:33,329 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108057303] [2019-12-07 17:05:33,329 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:33,367 INFO L264 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 39 conjunts are in the unsatisfiable core [2019-12-07 17:05:33,369 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:33,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:33,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2019-12-07 17:05:33,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548961638] [2019-12-07 17:05:33,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-12-07 17:05:33,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:33,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-12-07 17:05:33,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-12-07 17:05:33,412 INFO L87 Difference]: Start difference. First operand 261 states and 267 transitions. Second operand 40 states. [2019-12-07 17:05:33,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:33,751 INFO L93 Difference]: Finished difference Result 1710 states and 1964 transitions. [2019-12-07 17:05:33,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-12-07 17:05:33,751 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 226 [2019-12-07 17:05:33,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:33,753 INFO L225 Difference]: With dead ends: 1710 [2019-12-07 17:05:33,754 INFO L226 Difference]: Without dead ends: 1709 [2019-12-07 17:05:33,754 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-12-07 17:05:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2019-12-07 17:05:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1629. [2019-12-07 17:05:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2019-12-07 17:05:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 1879 transitions. [2019-12-07 17:05:33,769 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 1879 transitions. Word has length 226 [2019-12-07 17:05:33,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:33,769 INFO L462 AbstractCegarLoop]: Abstraction has 1629 states and 1879 transitions. [2019-12-07 17:05:33,769 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-12-07 17:05:33,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 1879 transitions. [2019-12-07 17:05:33,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-12-07 17:05:33,770 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:33,770 INFO L410 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1] [2019-12-07 17:05:33,971 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:33,971 INFO L410 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:33,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:33,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1324642751, now seen corresponding path program 38 times [2019-12-07 17:05:33,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:33,972 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912689778] [2019-12-07 17:05:33,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:34,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912689778] [2019-12-07 17:05:34,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672213873] [2019-12-07 17:05:34,505 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:34,542 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:05:34,542 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:34,544 INFO L264 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 40 conjunts are in the unsatisfiable core [2019-12-07 17:05:34,545 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:34,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:34,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:34,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2019-12-07 17:05:34,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703056722] [2019-12-07 17:05:34,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-12-07 17:05:34,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:34,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-12-07 17:05:34,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-12-07 17:05:34,604 INFO L87 Difference]: Start difference. First operand 1629 states and 1879 transitions. Second operand 41 states. [2019-12-07 17:05:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:34,981 INFO L93 Difference]: Finished difference Result 3129 states and 3634 transitions. [2019-12-07 17:05:34,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-12-07 17:05:34,981 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 232 [2019-12-07 17:05:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:34,984 INFO L225 Difference]: With dead ends: 3129 [2019-12-07 17:05:34,984 INFO L226 Difference]: Without dead ends: 3128 [2019-12-07 17:05:34,984 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-12-07 17:05:34,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2019-12-07 17:05:35,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 1668. [2019-12-07 17:05:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1668 states. [2019-12-07 17:05:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 1925 transitions. [2019-12-07 17:05:35,005 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 1925 transitions. Word has length 232 [2019-12-07 17:05:35,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:35,005 INFO L462 AbstractCegarLoop]: Abstraction has 1668 states and 1925 transitions. [2019-12-07 17:05:35,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-12-07 17:05:35,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 1925 transitions. [2019-12-07 17:05:35,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-12-07 17:05:35,006 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:35,006 INFO L410 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 1, 1] [2019-12-07 17:05:35,207 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:35,207 INFO L410 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:35,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:35,208 INFO L82 PathProgramCache]: Analyzing trace with hash -209585158, now seen corresponding path program 39 times [2019-12-07 17:05:35,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:35,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490257246] [2019-12-07 17:05:35,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:35,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490257246] [2019-12-07 17:05:35,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054862596] [2019-12-07 17:05:35,764 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:35,822 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2019-12-07 17:05:35,822 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:35,823 INFO L264 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 41 conjunts are in the unsatisfiable core [2019-12-07 17:05:35,824 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:35,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:35,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2019-12-07 17:05:35,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907990606] [2019-12-07 17:05:35,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-12-07 17:05:35,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:35,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-12-07 17:05:35,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2019-12-07 17:05:35,872 INFO L87 Difference]: Start difference. First operand 1668 states and 1925 transitions. Second operand 42 states. [2019-12-07 17:05:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:36,260 INFO L93 Difference]: Finished difference Result 3209 states and 3728 transitions. [2019-12-07 17:05:36,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-12-07 17:05:36,260 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 238 [2019-12-07 17:05:36,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:36,263 INFO L225 Difference]: With dead ends: 3209 [2019-12-07 17:05:36,263 INFO L226 Difference]: Without dead ends: 3208 [2019-12-07 17:05:36,264 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2019-12-07 17:05:36,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2019-12-07 17:05:36,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 1707. [2019-12-07 17:05:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2019-12-07 17:05:36,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1971 transitions. [2019-12-07 17:05:36,282 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1971 transitions. Word has length 238 [2019-12-07 17:05:36,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:36,282 INFO L462 AbstractCegarLoop]: Abstraction has 1707 states and 1971 transitions. [2019-12-07 17:05:36,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-12-07 17:05:36,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1971 transitions. [2019-12-07 17:05:36,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-12-07 17:05:36,283 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:36,283 INFO L410 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 1, 1] [2019-12-07 17:05:36,484 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:36,484 INFO L410 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:36,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:36,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1192458995, now seen corresponding path program 40 times [2019-12-07 17:05:36,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:36,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897965708] [2019-12-07 17:05:36,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:37,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897965708] [2019-12-07 17:05:37,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807516099] [2019-12-07 17:05:37,049 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:37,087 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:05:37,087 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:37,089 INFO L264 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 42 conjunts are in the unsatisfiable core [2019-12-07 17:05:37,090 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:37,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:37,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2019-12-07 17:05:37,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014147423] [2019-12-07 17:05:37,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-12-07 17:05:37,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:37,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-12-07 17:05:37,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2019-12-07 17:05:37,141 INFO L87 Difference]: Start difference. First operand 1707 states and 1971 transitions. Second operand 43 states. [2019-12-07 17:05:37,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:37,553 INFO L93 Difference]: Finished difference Result 3289 states and 3822 transitions. [2019-12-07 17:05:37,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-12-07 17:05:37,555 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 244 [2019-12-07 17:05:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:37,559 INFO L225 Difference]: With dead ends: 3289 [2019-12-07 17:05:37,559 INFO L226 Difference]: Without dead ends: 3288 [2019-12-07 17:05:37,560 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2019-12-07 17:05:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2019-12-07 17:05:37,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 1746. [2019-12-07 17:05:37,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1746 states. [2019-12-07 17:05:37,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2017 transitions. [2019-12-07 17:05:37,590 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2017 transitions. Word has length 244 [2019-12-07 17:05:37,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:37,590 INFO L462 AbstractCegarLoop]: Abstraction has 1746 states and 2017 transitions. [2019-12-07 17:05:37,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-12-07 17:05:37,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2017 transitions. [2019-12-07 17:05:37,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-12-07 17:05:37,591 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:37,591 INFO L410 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 1, 1] [2019-12-07 17:05:37,792 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:37,792 INFO L410 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1359078612, now seen corresponding path program 41 times [2019-12-07 17:05:37,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:37,794 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167153659] [2019-12-07 17:05:37,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:38,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167153659] [2019-12-07 17:05:38,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909838113] [2019-12-07 17:05:38,417 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:38,476 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2019-12-07 17:05:38,476 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:38,478 INFO L264 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 43 conjunts are in the unsatisfiable core [2019-12-07 17:05:38,479 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:38,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:38,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2019-12-07 17:05:38,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152858501] [2019-12-07 17:05:38,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-12-07 17:05:38,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:38,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-12-07 17:05:38,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2019-12-07 17:05:38,530 INFO L87 Difference]: Start difference. First operand 1746 states and 2017 transitions. Second operand 44 states. [2019-12-07 17:05:38,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:38,971 INFO L93 Difference]: Finished difference Result 3369 states and 3916 transitions. [2019-12-07 17:05:38,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-12-07 17:05:38,971 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 250 [2019-12-07 17:05:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:38,974 INFO L225 Difference]: With dead ends: 3369 [2019-12-07 17:05:38,974 INFO L226 Difference]: Without dead ends: 3368 [2019-12-07 17:05:38,975 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2019-12-07 17:05:38,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2019-12-07 17:05:39,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 1785. [2019-12-07 17:05:39,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1785 states. [2019-12-07 17:05:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 2063 transitions. [2019-12-07 17:05:39,004 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 2063 transitions. Word has length 250 [2019-12-07 17:05:39,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:39,004 INFO L462 AbstractCegarLoop]: Abstraction has 1785 states and 2063 transitions. [2019-12-07 17:05:39,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-12-07 17:05:39,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 2063 transitions. [2019-12-07 17:05:39,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-12-07 17:05:39,006 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:39,006 INFO L410 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1] [2019-12-07 17:05:39,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:39,207 INFO L410 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:39,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:39,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1414271835, now seen corresponding path program 42 times [2019-12-07 17:05:39,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:39,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847205439] [2019-12-07 17:05:39,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:39,842 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847205439] [2019-12-07 17:05:39,842 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026713104] [2019-12-07 17:05:39,842 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:39,903 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2019-12-07 17:05:39,903 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:39,904 INFO L264 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 44 conjunts are in the unsatisfiable core [2019-12-07 17:05:39,905 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:39,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:39,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2019-12-07 17:05:39,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524282318] [2019-12-07 17:05:39,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-12-07 17:05:39,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:39,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-12-07 17:05:39,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-12-07 17:05:39,966 INFO L87 Difference]: Start difference. First operand 1785 states and 2063 transitions. Second operand 45 states. [2019-12-07 17:05:40,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:40,331 INFO L93 Difference]: Finished difference Result 3449 states and 4010 transitions. [2019-12-07 17:05:40,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-12-07 17:05:40,331 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 256 [2019-12-07 17:05:40,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:40,333 INFO L225 Difference]: With dead ends: 3449 [2019-12-07 17:05:40,333 INFO L226 Difference]: Without dead ends: 3448 [2019-12-07 17:05:40,333 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-12-07 17:05:40,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2019-12-07 17:05:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 1824. [2019-12-07 17:05:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1824 states. [2019-12-07 17:05:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2109 transitions. [2019-12-07 17:05:40,353 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2109 transitions. Word has length 256 [2019-12-07 17:05:40,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:40,353 INFO L462 AbstractCegarLoop]: Abstraction has 1824 states and 2109 transitions. [2019-12-07 17:05:40,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 45 states. [2019-12-07 17:05:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2109 transitions. [2019-12-07 17:05:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2019-12-07 17:05:40,354 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:40,354 INFO L410 BasicCegarLoop]: trace histogram [43, 42, 42, 37, 37, 37, 6, 6, 6, 1, 1] [2019-12-07 17:05:40,554 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:40,555 INFO L410 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:40,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:40,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1545671082, now seen corresponding path program 11 times [2019-12-07 17:05:40,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:40,556 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834465847] [2019-12-07 17:05:40,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4932 backedges. 0 proven. 4932 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:41,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834465847] [2019-12-07 17:05:41,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854068076] [2019-12-07 17:05:41,184 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:41,244 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2019-12-07 17:05:41,245 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:41,246 INFO L264 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 39 conjunts are in the unsatisfiable core [2019-12-07 17:05:41,247 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4932 backedges. 787 proven. 4070 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-12-07 17:05:41,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:41,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 39] total 44 [2019-12-07 17:05:41,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93860011] [2019-12-07 17:05:41,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-12-07 17:05:41,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:41,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-12-07 17:05:41,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-12-07 17:05:41,299 INFO L87 Difference]: Start difference. First operand 1824 states and 2109 transitions. Second operand 45 states. [2019-12-07 17:05:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:41,424 INFO L93 Difference]: Finished difference Result 1906 states and 2203 transitions. [2019-12-07 17:05:41,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-12-07 17:05:41,424 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 258 [2019-12-07 17:05:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:41,424 INFO L225 Difference]: With dead ends: 1906 [2019-12-07 17:05:41,424 INFO L226 Difference]: Without dead ends: 301 [2019-12-07 17:05:41,426 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-12-07 17:05:41,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-12-07 17:05:41,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 297. [2019-12-07 17:05:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2019-12-07 17:05:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 303 transitions. [2019-12-07 17:05:41,430 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 303 transitions. Word has length 258 [2019-12-07 17:05:41,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:41,430 INFO L462 AbstractCegarLoop]: Abstraction has 297 states and 303 transitions. [2019-12-07 17:05:41,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 45 states. [2019-12-07 17:05:41,430 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 303 transitions. [2019-12-07 17:05:41,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2019-12-07 17:05:41,431 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:41,431 INFO L410 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1] [2019-12-07 17:05:41,632 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:41,632 INFO L410 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:41,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:41,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2082799778, now seen corresponding path program 43 times [2019-12-07 17:05:41,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:41,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957258703] [2019-12-07 17:05:41,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:42,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957258703] [2019-12-07 17:05:42,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123802750] [2019-12-07 17:05:42,311 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:42,353 INFO L264 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 45 conjunts are in the unsatisfiable core [2019-12-07 17:05:42,354 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:42,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:42,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2019-12-07 17:05:42,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901039793] [2019-12-07 17:05:42,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-12-07 17:05:42,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:42,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-12-07 17:05:42,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2019-12-07 17:05:42,410 INFO L87 Difference]: Start difference. First operand 297 states and 303 transitions. Second operand 46 states. [2019-12-07 17:05:42,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:42,768 INFO L93 Difference]: Finished difference Result 1992 states and 2288 transitions. [2019-12-07 17:05:42,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-12-07 17:05:42,768 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 262 [2019-12-07 17:05:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:42,770 INFO L225 Difference]: With dead ends: 1992 [2019-12-07 17:05:42,770 INFO L226 Difference]: Without dead ends: 1991 [2019-12-07 17:05:42,770 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2019-12-07 17:05:42,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2019-12-07 17:05:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1899. [2019-12-07 17:05:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2019-12-07 17:05:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2191 transitions. [2019-12-07 17:05:42,787 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2191 transitions. Word has length 262 [2019-12-07 17:05:42,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:42,787 INFO L462 AbstractCegarLoop]: Abstraction has 1899 states and 2191 transitions. [2019-12-07 17:05:42,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-12-07 17:05:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2191 transitions. [2019-12-07 17:05:42,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2019-12-07 17:05:42,788 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:42,788 INFO L410 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 1, 1] [2019-12-07 17:05:42,988 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:42,989 INFO L410 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:42,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:42,989 INFO L82 PathProgramCache]: Analyzing trace with hash -850566313, now seen corresponding path program 44 times [2019-12-07 17:05:42,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:42,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986840144] [2019-12-07 17:05:42,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:43,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986840144] [2019-12-07 17:05:43,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299242938] [2019-12-07 17:05:43,670 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:43,708 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:05:43,708 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:43,709 INFO L264 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 46 conjunts are in the unsatisfiable core [2019-12-07 17:05:43,711 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:43,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:43,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2019-12-07 17:05:43,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576945680] [2019-12-07 17:05:43,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 47 states [2019-12-07 17:05:43,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:43,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2019-12-07 17:05:43,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2019-12-07 17:05:43,769 INFO L87 Difference]: Start difference. First operand 1899 states and 2191 transitions. Second operand 47 states. [2019-12-07 17:05:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:44,132 INFO L93 Difference]: Finished difference Result 3645 states and 4234 transitions. [2019-12-07 17:05:44,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-12-07 17:05:44,132 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 268 [2019-12-07 17:05:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:44,135 INFO L225 Difference]: With dead ends: 3645 [2019-12-07 17:05:44,135 INFO L226 Difference]: Without dead ends: 3644 [2019-12-07 17:05:44,136 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2019-12-07 17:05:44,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2019-12-07 17:05:44,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 1938. [2019-12-07 17:05:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1938 states. [2019-12-07 17:05:44,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2237 transitions. [2019-12-07 17:05:44,164 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2237 transitions. Word has length 268 [2019-12-07 17:05:44,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:44,165 INFO L462 AbstractCegarLoop]: Abstraction has 1938 states and 2237 transitions. [2019-12-07 17:05:44,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 47 states. [2019-12-07 17:05:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2237 transitions. [2019-12-07 17:05:44,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2019-12-07 17:05:44,166 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:44,166 INFO L410 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 1, 1] [2019-12-07 17:05:44,366 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:44,367 INFO L410 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:44,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:44,367 INFO L82 PathProgramCache]: Analyzing trace with hash 907618448, now seen corresponding path program 45 times [2019-12-07 17:05:44,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:44,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419994044] [2019-12-07 17:05:44,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:45,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419994044] [2019-12-07 17:05:45,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704152191] [2019-12-07 17:05:45,072 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:45,135 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2019-12-07 17:05:45,136 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:45,137 INFO L264 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 47 conjunts are in the unsatisfiable core [2019-12-07 17:05:45,138 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:45,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:45,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2019-12-07 17:05:45,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535442202] [2019-12-07 17:05:45,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-12-07 17:05:45,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:45,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-12-07 17:05:45,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 17:05:45,199 INFO L87 Difference]: Start difference. First operand 1938 states and 2237 transitions. Second operand 48 states. [2019-12-07 17:05:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:45,582 INFO L93 Difference]: Finished difference Result 3725 states and 4328 transitions. [2019-12-07 17:05:45,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-12-07 17:05:45,582 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 274 [2019-12-07 17:05:45,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:45,584 INFO L225 Difference]: With dead ends: 3725 [2019-12-07 17:05:45,584 INFO L226 Difference]: Without dead ends: 3724 [2019-12-07 17:05:45,585 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 17:05:45,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2019-12-07 17:05:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 1977. [2019-12-07 17:05:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1977 states. [2019-12-07 17:05:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2283 transitions. [2019-12-07 17:05:45,605 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2283 transitions. Word has length 274 [2019-12-07 17:05:45,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:45,605 INFO L462 AbstractCegarLoop]: Abstraction has 1977 states and 2283 transitions. [2019-12-07 17:05:45,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-12-07 17:05:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2283 transitions. [2019-12-07 17:05:45,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-12-07 17:05:45,606 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:45,606 INFO L410 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1] [2019-12-07 17:05:45,807 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:45,807 INFO L410 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:45,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:45,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1920966903, now seen corresponding path program 46 times [2019-12-07 17:05:45,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:45,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885687218] [2019-12-07 17:05:45,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:46,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885687218] [2019-12-07 17:05:46,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897207436] [2019-12-07 17:05:46,529 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:46,572 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:05:46,573 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:46,574 INFO L264 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 48 conjunts are in the unsatisfiable core [2019-12-07 17:05:46,575 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:46,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:46,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2019-12-07 17:05:46,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493102471] [2019-12-07 17:05:46,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 49 states [2019-12-07 17:05:46,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:46,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2019-12-07 17:05:46,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2019-12-07 17:05:46,638 INFO L87 Difference]: Start difference. First operand 1977 states and 2283 transitions. Second operand 49 states. [2019-12-07 17:05:47,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:47,020 INFO L93 Difference]: Finished difference Result 3805 states and 4422 transitions. [2019-12-07 17:05:47,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-12-07 17:05:47,020 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 280 [2019-12-07 17:05:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:47,023 INFO L225 Difference]: With dead ends: 3805 [2019-12-07 17:05:47,023 INFO L226 Difference]: Without dead ends: 3804 [2019-12-07 17:05:47,023 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2019-12-07 17:05:47,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3804 states. [2019-12-07 17:05:47,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3804 to 2016. [2019-12-07 17:05:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2016 states. [2019-12-07 17:05:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2329 transitions. [2019-12-07 17:05:47,043 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2329 transitions. Word has length 280 [2019-12-07 17:05:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:47,044 INFO L462 AbstractCegarLoop]: Abstraction has 2016 states and 2329 transitions. [2019-12-07 17:05:47,044 INFO L463 AbstractCegarLoop]: Interpolant automaton has 49 states. [2019-12-07 17:05:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2329 transitions. [2019-12-07 17:05:47,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-12-07 17:05:47,045 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:47,045 INFO L410 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1] [2019-12-07 17:05:47,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:47,245 INFO L410 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:47,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:47,246 INFO L82 PathProgramCache]: Analyzing trace with hash 217650882, now seen corresponding path program 47 times [2019-12-07 17:05:47,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:47,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612671637] [2019-12-07 17:05:47,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:48,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:48,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612671637] [2019-12-07 17:05:48,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295571165] [2019-12-07 17:05:48,012 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:48,082 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2019-12-07 17:05:48,082 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:48,084 INFO L264 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 49 conjunts are in the unsatisfiable core [2019-12-07 17:05:48,085 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:48,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:48,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2019-12-07 17:05:48,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347547975] [2019-12-07 17:05:48,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-12-07 17:05:48,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:48,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-12-07 17:05:48,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2019-12-07 17:05:48,156 INFO L87 Difference]: Start difference. First operand 2016 states and 2329 transitions. Second operand 50 states. [2019-12-07 17:05:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:48,580 INFO L93 Difference]: Finished difference Result 3885 states and 4516 transitions. [2019-12-07 17:05:48,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-12-07 17:05:48,580 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 286 [2019-12-07 17:05:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:48,583 INFO L225 Difference]: With dead ends: 3885 [2019-12-07 17:05:48,583 INFO L226 Difference]: Without dead ends: 3884 [2019-12-07 17:05:48,584 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2019-12-07 17:05:48,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2019-12-07 17:05:48,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 2055. [2019-12-07 17:05:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2019-12-07 17:05:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2375 transitions. [2019-12-07 17:05:48,609 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2375 transitions. Word has length 286 [2019-12-07 17:05:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:48,609 INFO L462 AbstractCegarLoop]: Abstraction has 2055 states and 2375 transitions. [2019-12-07 17:05:48,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-12-07 17:05:48,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2375 transitions. [2019-12-07 17:05:48,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2019-12-07 17:05:48,610 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:48,610 INFO L410 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1] [2019-12-07 17:05:48,811 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:48,811 INFO L410 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:48,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:48,812 INFO L82 PathProgramCache]: Analyzing trace with hash -517120069, now seen corresponding path program 48 times [2019-12-07 17:05:48,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:48,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38511928] [2019-12-07 17:05:48,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:49,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38511928] [2019-12-07 17:05:49,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386282308] [2019-12-07 17:05:49,593 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:49,662 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2019-12-07 17:05:49,662 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:49,663 INFO L264 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 50 conjunts are in the unsatisfiable core [2019-12-07 17:05:49,665 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:49,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:49,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2019-12-07 17:05:49,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484898711] [2019-12-07 17:05:49,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 51 states [2019-12-07 17:05:49,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:49,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2019-12-07 17:05:49,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2019-12-07 17:05:49,733 INFO L87 Difference]: Start difference. First operand 2055 states and 2375 transitions. Second operand 51 states. [2019-12-07 17:05:50,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:50,253 INFO L93 Difference]: Finished difference Result 3965 states and 4610 transitions. [2019-12-07 17:05:50,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-12-07 17:05:50,253 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 292 [2019-12-07 17:05:50,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:50,256 INFO L225 Difference]: With dead ends: 3965 [2019-12-07 17:05:50,256 INFO L226 Difference]: Without dead ends: 3964 [2019-12-07 17:05:50,256 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2019-12-07 17:05:50,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3964 states. [2019-12-07 17:05:50,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3964 to 2094. [2019-12-07 17:05:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2019-12-07 17:05:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2421 transitions. [2019-12-07 17:05:50,278 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2421 transitions. Word has length 292 [2019-12-07 17:05:50,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:50,278 INFO L462 AbstractCegarLoop]: Abstraction has 2094 states and 2421 transitions. [2019-12-07 17:05:50,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 51 states. [2019-12-07 17:05:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2421 transitions. [2019-12-07 17:05:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-12-07 17:05:50,279 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:50,279 INFO L410 BasicCegarLoop]: trace histogram [49, 48, 48, 43, 43, 43, 6, 6, 6, 1, 1] [2019-12-07 17:05:50,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:50,480 INFO L410 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:50,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:50,480 INFO L82 PathProgramCache]: Analyzing trace with hash 420091712, now seen corresponding path program 12 times [2019-12-07 17:05:50,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:50,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097037129] [2019-12-07 17:05:50,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6492 backedges. 0 proven. 6492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:51,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097037129] [2019-12-07 17:05:51,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291568121] [2019-12-07 17:05:51,285 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:51,315 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-12-07 17:05:51,315 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:51,315 INFO L264 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:05:51,317 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6492 backedges. 1146 proven. 96 refuted. 0 times theorem prover too weak. 5250 trivial. 0 not checked. [2019-12-07 17:05:51,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:51,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 8] total 57 [2019-12-07 17:05:51,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81857791] [2019-12-07 17:05:51,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 58 states [2019-12-07 17:05:51,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:51,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2019-12-07 17:05:51,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2019-12-07 17:05:51,556 INFO L87 Difference]: Start difference. First operand 2094 states and 2421 transitions. Second operand 58 states. [2019-12-07 17:05:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:51,755 INFO L93 Difference]: Finished difference Result 2185 states and 2527 transitions. [2019-12-07 17:05:51,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-12-07 17:05:51,755 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 294 [2019-12-07 17:05:51,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:51,755 INFO L225 Difference]: With dead ends: 2185 [2019-12-07 17:05:51,755 INFO L226 Difference]: Without dead ends: 346 [2019-12-07 17:05:51,756 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2019-12-07 17:05:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2019-12-07 17:05:51,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 345. [2019-12-07 17:05:51,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2019-12-07 17:05:51,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 352 transitions. [2019-12-07 17:05:51,759 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 352 transitions. Word has length 294 [2019-12-07 17:05:51,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:51,759 INFO L462 AbstractCegarLoop]: Abstraction has 345 states and 352 transitions. [2019-12-07 17:05:51,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 58 states. [2019-12-07 17:05:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 352 transitions. [2019-12-07 17:05:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2019-12-07 17:05:51,760 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:51,761 INFO L410 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 1, 1] [2019-12-07 17:05:51,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:51,961 INFO L410 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:51,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:51,962 INFO L82 PathProgramCache]: Analyzing trace with hash -218412556, now seen corresponding path program 49 times [2019-12-07 17:05:51,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:51,962 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149541512] [2019-12-07 17:05:51,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:52,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149541512] [2019-12-07 17:05:52,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186769704] [2019-12-07 17:05:52,790 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:52,838 INFO L264 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 51 conjunts are in the unsatisfiable core [2019-12-07 17:05:52,840 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:52,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:52,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2019-12-07 17:05:52,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733704947] [2019-12-07 17:05:52,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-12-07 17:05:52,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:52,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-12-07 17:05:52,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2019-12-07 17:05:52,911 INFO L87 Difference]: Start difference. First operand 345 states and 352 transitions. Second operand 52 states. [2019-12-07 17:05:53,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:53,043 INFO L93 Difference]: Finished difference Result 348 states and 355 transitions. [2019-12-07 17:05:53,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-12-07 17:05:53,044 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 298 [2019-12-07 17:05:53,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:53,044 INFO L225 Difference]: With dead ends: 348 [2019-12-07 17:05:53,044 INFO L226 Difference]: Without dead ends: 347 [2019-12-07 17:05:53,044 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2019-12-07 17:05:53,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2019-12-07 17:05:53,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2019-12-07 17:05:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2019-12-07 17:05:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 352 transitions. [2019-12-07 17:05:53,047 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 352 transitions. Word has length 298 [2019-12-07 17:05:53,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:53,047 INFO L462 AbstractCegarLoop]: Abstraction has 345 states and 352 transitions. [2019-12-07 17:05:53,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-12-07 17:05:53,047 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 352 transitions. [2019-12-07 17:05:53,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2019-12-07 17:05:53,048 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:53,048 INFO L410 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 1, 1] [2019-12-07 17:05:53,249 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:53,249 INFO L410 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:53,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:53,250 INFO L82 PathProgramCache]: Analyzing trace with hash -260774547, now seen corresponding path program 50 times [2019-12-07 17:05:53,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:53,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731272491] [2019-12-07 17:05:53,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:54,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731272491] [2019-12-07 17:05:54,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355718338] [2019-12-07 17:05:54,094 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:54,137 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:05:54,137 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:54,138 INFO L264 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 52 conjunts are in the unsatisfiable core [2019-12-07 17:05:54,140 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:54,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:54,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2019-12-07 17:05:54,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986033690] [2019-12-07 17:05:54,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 53 states [2019-12-07 17:05:54,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:54,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2019-12-07 17:05:54,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2019-12-07 17:05:54,218 INFO L87 Difference]: Start difference. First operand 345 states and 352 transitions. Second operand 53 states. [2019-12-07 17:05:54,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:54,801 INFO L93 Difference]: Finished difference Result 2595 states and 2986 transitions. [2019-12-07 17:05:54,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-12-07 17:05:54,801 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 304 [2019-12-07 17:05:54,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:54,803 INFO L225 Difference]: With dead ends: 2595 [2019-12-07 17:05:54,803 INFO L226 Difference]: Without dead ends: 2594 [2019-12-07 17:05:54,803 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2019-12-07 17:05:54,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2019-12-07 17:05:54,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2487. [2019-12-07 17:05:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2487 states. [2019-12-07 17:05:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 2873 transitions. [2019-12-07 17:05:54,822 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 2873 transitions. Word has length 304 [2019-12-07 17:05:54,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:54,822 INFO L462 AbstractCegarLoop]: Abstraction has 2487 states and 2873 transitions. [2019-12-07 17:05:54,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 53 states. [2019-12-07 17:05:54,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 2873 transitions. [2019-12-07 17:05:54,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2019-12-07 17:05:54,823 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:54,823 INFO L410 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 1, 1] [2019-12-07 17:05:55,024 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:55,024 INFO L410 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:55,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:55,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1780465114, now seen corresponding path program 51 times [2019-12-07 17:05:55,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:55,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751265753] [2019-12-07 17:05:55,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:05:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 7752 trivial. 0 not checked. [2019-12-07 17:05:55,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751265753] [2019-12-07 17:05:55,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618992512] [2019-12-07 17:05:55,202 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:55,279 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2019-12-07 17:05:55,279 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:05:55,280 INFO L264 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 53 conjunts are in the unsatisfiable core [2019-12-07 17:05:55,282 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:05:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:05:56,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:05:56,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 52] total 54 [2019-12-07 17:05:56,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476212214] [2019-12-07 17:05:56,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 56 states [2019-12-07 17:05:56,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:05:56,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2019-12-07 17:05:56,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1436, Invalid=1644, Unknown=0, NotChecked=0, Total=3080 [2019-12-07 17:05:56,178 INFO L87 Difference]: Start difference. First operand 2487 states and 2873 transitions. Second operand 56 states. [2019-12-07 17:05:59,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:05:59,485 INFO L93 Difference]: Finished difference Result 4746 states and 5516 transitions. [2019-12-07 17:05:59,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2019-12-07 17:05:59,485 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 310 [2019-12-07 17:05:59,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:05:59,488 INFO L225 Difference]: With dead ends: 4746 [2019-12-07 17:05:59,488 INFO L226 Difference]: Without dead ends: 4745 [2019-12-07 17:05:59,489 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6729 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=8479, Invalid=16643, Unknown=0, NotChecked=0, Total=25122 [2019-12-07 17:05:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4745 states. [2019-12-07 17:05:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4745 to 343. [2019-12-07 17:05:59,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-12-07 17:05:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 350 transitions. [2019-12-07 17:05:59,505 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 350 transitions. Word has length 310 [2019-12-07 17:05:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:05:59,506 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 350 transitions. [2019-12-07 17:05:59,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 56 states. [2019-12-07 17:05:59,506 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 350 transitions. [2019-12-07 17:05:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2019-12-07 17:05:59,507 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:05:59,507 INFO L410 BasicCegarLoop]: trace histogram [57, 56, 56, 50, 50, 50, 7, 7, 7, 1, 1] [2019-12-07 17:05:59,707 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:05:59,708 INFO L410 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:05:59,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:05:59,708 INFO L82 PathProgramCache]: Analyzing trace with hash -826583422, now seen corresponding path program 13 times [2019-12-07 17:05:59,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:05:59,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721568795] [2019-12-07 17:05:59,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:05:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:06:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8820 backedges. 0 proven. 8820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:06:00,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721568795] [2019-12-07 17:06:00,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816637643] [2019-12-07 17:06:00,786 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:06:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:06:00,834 INFO L264 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 52 conjunts are in the unsatisfiable core [2019-12-07 17:06:00,835 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:06:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8820 backedges. 1262 proven. 7450 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-12-07 17:06:00,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:06:00,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 52] total 58 [2019-12-07 17:06:00,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763265291] [2019-12-07 17:06:00,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-12-07 17:06:00,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:06:00,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-12-07 17:06:00,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2019-12-07 17:06:00,922 INFO L87 Difference]: Start difference. First operand 343 states and 350 transitions. Second operand 59 states. [2019-12-07 17:06:01,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:06:01,110 INFO L93 Difference]: Finished difference Result 396 states and 411 transitions. [2019-12-07 17:06:01,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-12-07 17:06:01,110 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 342 [2019-12-07 17:06:01,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:06:01,110 INFO L225 Difference]: With dead ends: 396 [2019-12-07 17:06:01,111 INFO L226 Difference]: Without dead ends: 350 [2019-12-07 17:06:01,111 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2019-12-07 17:06:01,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2019-12-07 17:06:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 349. [2019-12-07 17:06:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2019-12-07 17:06:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 356 transitions. [2019-12-07 17:06:01,116 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 356 transitions. Word has length 342 [2019-12-07 17:06:01,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:06:01,117 INFO L462 AbstractCegarLoop]: Abstraction has 349 states and 356 transitions. [2019-12-07 17:06:01,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-12-07 17:06:01,117 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 356 transitions. [2019-12-07 17:06:01,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2019-12-07 17:06:01,118 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:06:01,118 INFO L410 BasicCegarLoop]: trace histogram [58, 57, 57, 51, 51, 51, 7, 7, 7, 1, 1] [2019-12-07 17:06:01,318 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:06:01,319 INFO L410 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:06:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:06:01,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1502322565, now seen corresponding path program 14 times [2019-12-07 17:06:01,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:06:01,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450183460] [2019-12-07 17:06:01,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:06:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:06:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9147 backedges. 0 proven. 9147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:06:02,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450183460] [2019-12-07 17:06:02,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198452910] [2019-12-07 17:06:02,420 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:06:02,475 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:06:02,475 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:06:02,477 INFO L264 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 59 conjunts are in the unsatisfiable core [2019-12-07 17:06:02,478 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:06:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9147 backedges. 114 proven. 9033 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:06:04,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:06:04,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 59] total 109 [2019-12-07 17:06:04,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688838558] [2019-12-07 17:06:04,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 110 states [2019-12-07 17:06:04,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:06:04,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2019-12-07 17:06:04,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2019-12-07 17:06:04,827 INFO L87 Difference]: Start difference. First operand 349 states and 356 transitions. Second operand 110 states. [2019-12-07 17:06:05,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:06:05,735 INFO L93 Difference]: Finished difference Result 657 states and 765 transitions. [2019-12-07 17:06:05,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2019-12-07 17:06:05,735 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 348 [2019-12-07 17:06:05,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:06:05,736 INFO L225 Difference]: With dead ends: 657 [2019-12-07 17:06:05,736 INFO L226 Difference]: Without dead ends: 656 [2019-12-07 17:06:05,737 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2019-12-07 17:06:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2019-12-07 17:06:05,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 655. [2019-12-07 17:06:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2019-12-07 17:06:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 713 transitions. [2019-12-07 17:06:05,757 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 713 transitions. Word has length 348 [2019-12-07 17:06:05,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:06:05,757 INFO L462 AbstractCegarLoop]: Abstraction has 655 states and 713 transitions. [2019-12-07 17:06:05,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 110 states. [2019-12-07 17:06:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 713 transitions. [2019-12-07 17:06:05,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2019-12-07 17:06:05,759 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:06:05,760 INFO L410 BasicCegarLoop]: trace histogram [109, 108, 108, 58, 58, 58, 51, 51, 51, 1, 1] [2019-12-07 17:06:05,960 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:06:05,961 INFO L410 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:06:05,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:06:05,962 INFO L82 PathProgramCache]: Analyzing trace with hash -916856348, now seen corresponding path program 15 times [2019-12-07 17:06:05,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:06:05,962 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75268820] [2019-12-07 17:06:05,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:06:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:06:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 29292 backedges. 0 proven. 19545 refuted. 0 times theorem prover too weak. 9747 trivial. 0 not checked. [2019-12-07 17:06:09,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75268820] [2019-12-07 17:06:09,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173972373] [2019-12-07 17:06:09,738 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:06:09,895 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2019-12-07 17:06:09,895 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:06:09,899 INFO L264 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 110 conjunts are in the unsatisfiable core [2019-12-07 17:06:09,902 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:06:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 29292 backedges. 216 proven. 29076 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:06:15,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:06:15,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 110] total 213 [2019-12-07 17:06:15,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053257104] [2019-12-07 17:06:15,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 214 states [2019-12-07 17:06:15,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:06:15,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2019-12-07 17:06:15,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11564, Invalid=34018, Unknown=0, NotChecked=0, Total=45582 [2019-12-07 17:06:15,686 INFO L87 Difference]: Start difference. First operand 655 states and 713 transitions. Second operand 214 states. [2019-12-07 17:06:37,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:06:37,602 INFO L93 Difference]: Finished difference Result 1316 states and 1534 transitions. [2019-12-07 17:06:37,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 369 states. [2019-12-07 17:06:37,602 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 654 [2019-12-07 17:06:37,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:06:37,603 INFO L225 Difference]: With dead ends: 1316 [2019-12-07 17:06:37,603 INFO L226 Difference]: Without dead ends: 1315 [2019-12-07 17:06:37,608 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 470 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57949 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=74681, Invalid=147631, Unknown=0, NotChecked=0, Total=222312 [2019-12-07 17:06:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2019-12-07 17:06:37,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 969. [2019-12-07 17:06:37,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2019-12-07 17:06:37,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1079 transitions. [2019-12-07 17:06:37,641 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1079 transitions. Word has length 654 [2019-12-07 17:06:37,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:06:37,641 INFO L462 AbstractCegarLoop]: Abstraction has 969 states and 1079 transitions. [2019-12-07 17:06:37,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 214 states. [2019-12-07 17:06:37,642 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1079 transitions. [2019-12-07 17:06:37,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2019-12-07 17:06:37,646 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:06:37,647 INFO L410 BasicCegarLoop]: trace histogram [161, 160, 160, 109, 109, 109, 52, 52, 52, 1, 1] [2019-12-07 17:06:37,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:06:37,847 INFO L410 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:06:37,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:06:37,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1840041530, now seen corresponding path program 16 times [2019-12-07 17:06:37,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:06:37,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745393906] [2019-12-07 17:06:37,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:06:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:06:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 65784 backedges. 0 proven. 23040 refuted. 0 times theorem prover too weak. 42744 trivial. 0 not checked. [2019-12-07 17:06:39,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745393906] [2019-12-07 17:06:39,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012264674] [2019-12-07 17:06:39,093 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:06:39,215 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:06:39,215 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:06:39,218 INFO L264 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 53 conjunts are in the unsatisfiable core [2019-12-07 17:06:39,222 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:06:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 65784 backedges. 30359 proven. 0 refuted. 0 times theorem prover too weak. 35425 trivial. 0 not checked. [2019-12-07 17:06:40,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 17:06:40,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [6] total 59 [2019-12-07 17:06:40,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463043878] [2019-12-07 17:06:40,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2019-12-07 17:06:40,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:06:40,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2019-12-07 17:06:40,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1447, Invalid=2093, Unknown=0, NotChecked=0, Total=3540 [2019-12-07 17:06:40,609 INFO L87 Difference]: Start difference. First operand 969 states and 1079 transitions. Second operand 54 states. [2019-12-07 17:06:40,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:06:40,823 INFO L93 Difference]: Finished difference Result 971 states and 1081 transitions. [2019-12-07 17:06:40,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-12-07 17:06:40,823 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 966 [2019-12-07 17:06:40,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:06:40,823 INFO L225 Difference]: With dead ends: 971 [2019-12-07 17:06:40,823 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:06:40,824 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1230 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1447, Invalid=2093, Unknown=0, NotChecked=0, Total=3540 [2019-12-07 17:06:40,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:06:40,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:06:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:06:40,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:06:40,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 966 [2019-12-07 17:06:40,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:06:40,824 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:06:40,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 54 states. [2019-12-07 17:06:40,825 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:06:40,825 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:06:41,025 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:06:41,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 17:06:41,804 WARN L192 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 841 DAG size of output: 648 [2019-12-07 17:06:44,476 WARN L192 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 648 DAG size of output: 272 [2019-12-07 17:06:44,479 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 17:06:44,479 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 17:06:44,479 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-12-07 17:06:44,479 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-12-07 17:06:44,479 INFO L246 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2019-12-07 17:06:44,479 INFO L246 CegarLoopResult]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2019-12-07 17:06:44,479 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 17:06:44,479 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-12-07 17:06:44,480 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 17:06:44,480 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-12-07 17:06:44,480 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 17:06:44,480 INFO L249 CegarLoopResult]: At program point L26(lines 14 27) the Hoare annotation is: true [2019-12-07 17:06:44,480 INFO L246 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2019-12-07 17:06:44,480 INFO L246 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2019-12-07 17:06:44,480 INFO L246 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-12-07 17:06:44,480 INFO L246 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2019-12-07 17:06:44,480 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-12-07 17:06:44,481 INFO L242 CegarLoopResult]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse1 (<= ULTIMATE.start_main_~x~0 51)) (.cse0 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (or (and (<= 17 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 17) (<= ULTIMATE.start_main_~y~0 17)) (and (<= ULTIMATE.start_main_~x~0 50) (<= 49 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 49)) (and (<= ULTIMATE.start_main_~y~0 9) (<= ULTIMATE.start_main_~x~0 9) (<= 9 ULTIMATE.start_main_~x~0)) (and (<= 33 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 33) (<= ULTIMATE.start_main_~y~0 33)) (and (<= 14 ULTIMATE.start_main_~x~0) (<= .cse0 28) (<= ULTIMATE.start_main_~x~0 14)) (and (<= ULTIMATE.start_main_~y~0 44) (<= 44 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 44)) (and (<= .cse0 0) (<= 0 ULTIMATE.start_main_~x~0) (<= 0 ULTIMATE.start_main_~y~0)) (and .cse1 (<= 15 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 15)) (and (<= 22 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 22) (<= .cse0 44)) (and (<= ULTIMATE.start_main_~y~0 21) (<= 21 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 21)) (and (<= ULTIMATE.start_main_~x~0 4) (<= 4 ULTIMATE.start_main_~x~0) (<= .cse0 8)) (and (<= .cse0 26) (<= ULTIMATE.start_main_~x~0 13) (<= 13 ULTIMATE.start_main_~x~0)) (and (<= 26 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 26) (<= .cse0 52)) (and .cse1 (<= 48 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 48)) (and (<= ULTIMATE.start_main_~x~0 39) (<= 39 ULTIMATE.start_main_~x~0) (<= .cse0 78)) (and (<= ULTIMATE.start_main_~x~0 30) (<= 30 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 30)) (and (<= ULTIMATE.start_main_~x~0 8) (<= 8 ULTIMATE.start_main_~x~0) (<= .cse0 16)) (and (<= ULTIMATE.start_main_~x~0 27) (<= .cse0 54) (<= 27 ULTIMATE.start_main_~x~0)) (and (<= 28 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 28) (<= ULTIMATE.start_main_~x~0 28)) (and (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 1) (<= .cse0 2)) (and (<= ULTIMATE.start_main_~x~0 11) (<= 11 ULTIMATE.start_main_~x~0) (<= .cse0 22)) (and (<= 40 ULTIMATE.start_main_~x~0) (<= .cse0 80) (<= ULTIMATE.start_main_~x~0 40)) (and .cse1 (<= 38 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 38)) (and (<= ULTIMATE.start_main_~x~0 2) (<= .cse0 4) (<= 2 ULTIMATE.start_main_~x~0)) (and (<= 23 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 23) (<= ULTIMATE.start_main_~x~0 23)) (and (<= 43 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 43) (<= ULTIMATE.start_main_~y~0 43)) (and (<= 5 ULTIMATE.start_main_~x~0) (<= .cse0 10) (<= ULTIMATE.start_main_~x~0 5)) (and (<= ULTIMATE.start_main_~x~0 12) (<= 12 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 12)) (and .cse1 (<= 3 ULTIMATE.start_main_~x~0) (<= .cse0 6)) (and (<= 7 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 7) (<= ULTIMATE.start_main_~y~0 7)) (and (<= ULTIMATE.start_main_~x~0 103) (<= .cse0 102) (<= 51 ULTIMATE.start_main_~x~0)) (and (<= 6 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 6) (<= ULTIMATE.start_main_~y~0 6)) (and .cse1 (<= .cse0 70) (<= 35 ULTIMATE.start_main_~x~0)) (and (<= 32 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 32) (<= ULTIMATE.start_main_~x~0 32)) (and (<= 29 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 29) (<= .cse0 58)) (and (<= ULTIMATE.start_main_~x~0 16) (<= ULTIMATE.start_main_~y~0 16) (<= 16 ULTIMATE.start_main_~x~0)) (and (<= 37 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 37) (<= .cse0 74)) (and (<= 18 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 18) (<= .cse0 36)) (and .cse1 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (<= 50 ULTIMATE.start_main_~x~0)) (and (<= 10 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 10) (<= ULTIMATE.start_main_~x~0 10)) (and (<= ULTIMATE.start_main_~x~0 20) (<= ULTIMATE.start_main_~y~0 20) (<= 20 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 47) (<= 47 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 47)) (and (<= 45 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 45) (<= ULTIMATE.start_main_~x~0 45)) (and (<= ULTIMATE.start_main_~x~0 34) (<= 34 ULTIMATE.start_main_~x~0) (<= .cse0 68)) (and (<= 24 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 24) (<= ULTIMATE.start_main_~x~0 24)) (and (<= ULTIMATE.start_main_~x~0 42) (<= 42 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 42)) (and (<= ULTIMATE.start_main_~x~0 41) (<= 41 ULTIMATE.start_main_~x~0) (<= .cse0 82)) (and (<= 31 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 31) (<= ULTIMATE.start_main_~x~0 31)) (and .cse1 (<= 25 ULTIMATE.start_main_~x~0) (<= .cse0 50)) (and (<= ULTIMATE.start_main_~x~0 36) (<= 36 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 36)) (and (<= 19 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 19) (<= ULTIMATE.start_main_~y~0 19)) (and (<= ULTIMATE.start_main_~x~0 46) (<= .cse0 92) (<= 46 ULTIMATE.start_main_~x~0)))) [2019-12-07 17:06:44,481 INFO L246 CegarLoopResult]: For program point L18-3(lines 18 25) no Hoare annotation was computed. [2019-12-07 17:06:44,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:06:44 BoogieIcfgContainer [2019-12-07 17:06:44,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:06:44,506 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:06:44,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:06:44,507 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:06:44,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:05:03" (3/4) ... [2019-12-07 17:06:44,509 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:06:44,516 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 17:06:44,516 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 17:06:44,541 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d0472eb5-d601-4558-bafb-33595a6bd890/bin/uautomizer/witness.graphml [2019-12-07 17:06:44,541 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:06:44,542 INFO L168 Benchmark]: Toolchain (without parser) took 101791.35 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 429.4 MB). Free memory was 942.5 MB in the beginning and 837.2 MB in the end (delta: 105.2 MB). Peak memory consumption was 534.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:44,542 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:06:44,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -144.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:44,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.64 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:06:44,543 INFO L168 Benchmark]: Boogie Preprocessor took 11.06 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:06:44,543 INFO L168 Benchmark]: RCFGBuilder took 136.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:44,543 INFO L168 Benchmark]: TraceAbstraction took 101417.49 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 337.6 MB). Free memory was 1.1 GB in the beginning and 841.4 MB in the end (delta: 227.5 MB). Peak memory consumption was 627.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:44,543 INFO L168 Benchmark]: Witness Printer took 34.54 ms. Allocated memory is still 1.5 GB. Free memory was 841.4 MB in the beginning and 837.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:06:44,544 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -144.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.64 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.06 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 136.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 101417.49 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 337.6 MB). Free memory was 1.1 GB in the beginning and 841.4 MB in the end (delta: 227.5 MB). Peak memory consumption was 627.6 MB. Max. memory is 11.5 GB. * Witness Printer took 34.54 ms. Allocated memory is still 1.5 GB. Free memory was 841.4 MB in the beginning and 837.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((17 <= x && x <= 17) && y <= 17) || ((x <= 50 && 49 <= x) && y <= 49)) || ((y <= 9 && x <= 9) && 9 <= x)) || ((33 <= x && x <= 33) && y <= 33)) || ((14 <= x && x + y <= 28) && x <= 14)) || ((y <= 44 && 44 <= x) && x <= 44)) || ((x + y <= 0 && 0 <= x) && 0 <= y)) || ((x <= 51 && 15 <= x) && y <= 15)) || ((22 <= x && x <= 22) && x + y <= 44)) || ((y <= 21 && 21 <= x) && x <= 21)) || ((x <= 4 && 4 <= x) && x + y <= 8)) || ((x + y <= 26 && x <= 13) && 13 <= x)) || ((26 <= x && x <= 26) && x + y <= 52)) || ((x <= 51 && 48 <= x) && y <= 48)) || ((x <= 39 && 39 <= x) && x + y <= 78)) || ((x <= 30 && 30 <= x) && y <= 30)) || ((x <= 8 && 8 <= x) && x + y <= 16)) || ((x <= 27 && x + y <= 54) && 27 <= x)) || ((28 <= x && y <= 28) && x <= 28)) || ((1 <= x && x <= 1) && x + y <= 2)) || ((x <= 11 && 11 <= x) && x + y <= 22)) || ((40 <= x && x + y <= 80) && x <= 40)) || ((x <= 51 && 38 <= x) && y <= 38)) || ((x <= 2 && x + y <= 4) && 2 <= x)) || ((23 <= x && y <= 23) && x <= 23)) || ((43 <= x && x <= 43) && y <= 43)) || ((5 <= x && x + y <= 10) && x <= 5)) || ((x <= 12 && 12 <= x) && y <= 12)) || ((x <= 51 && 3 <= x) && x + y <= 6)) || ((7 <= x && x <= 7) && y <= 7)) || ((x <= 103 && x + y <= 102) && 51 <= x)) || ((6 <= x && x <= 6) && y <= 6)) || ((x <= 51 && x + y <= 70) && 35 <= x)) || ((32 <= x && y <= 32) && x <= 32)) || ((29 <= x && x <= 29) && x + y <= 58)) || ((x <= 16 && y <= 16) && 16 <= x)) || ((37 <= x && x <= 37) && x + y <= 74)) || ((18 <= x && x <= 18) && x + y <= 36)) || ((x <= 51 && y <= x) && 50 <= x)) || ((10 <= x && y <= 10) && x <= 10)) || ((x <= 20 && y <= 20) && 20 <= x)) || ((x <= 47 && 47 <= x) && y <= 47)) || ((45 <= x && y <= 45) && x <= 45)) || ((x <= 34 && 34 <= x) && x + y <= 68)) || ((24 <= x && y <= 24) && x <= 24)) || ((x <= 42 && 42 <= x) && y <= 42)) || ((x <= 41 && 41 <= x) && x + y <= 82)) || ((31 <= x && y <= 31) && x <= 31)) || ((x <= 51 && 25 <= x) && x + y <= 50)) || ((x <= 36 && 36 <= x) && y <= 36)) || ((19 <= x && x <= 19) && y <= 19)) || ((x <= 46 && x + y <= 92) && 46 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Result: SAFE, OverallTime: 97.9s, OverallIterations: 72, TraceHistogramMax: 161, AutomataDifference: 39.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.4s, HoareTripleCheckerStatistics: 2773 SDtfs, 10014 SDslu, 23681 SDs, 0 SdLazy, 31616 SolverSat, 2756 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14811 GetRequests, 12343 SyntacticMatches, 0 SemanticMatches, 2468 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64842 ImplicationChecksByTransitivity, 49.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2487occurred in iteration=67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 72 MinimizatonAttempts, 36105 StatesRemovedByMinimization, 69 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 56 NumberOfFragments, 570 HoareAnnotationTreeSize, 2 FomulaSimplifications, 603 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 2 FomulaSimplificationsInter, 36847 FormulaSimplificationTreeSizeReductionInter, 2.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 36.4s InterpolantComputationTime, 24136 NumberOfCodeBlocks, 23734 NumberOfCodeBlocksAsserted, 963 NumberOfCheckSat, 23996 ConstructedInterpolants, 0 QuantifiedInterpolants, 22278028 SizeOfPredicates, 8 NumberOfNonLiveVariables, 19596 ConjunctsInSsa, 1876 ConjunctsInUnsatCore, 140 InterpolantComputations, 6 PerfectInterpolantSequences, 139636/543160 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...