./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/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 0837a1e1d82be1b28ccf3514392f1b01c88a9160 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:57:20,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:57:20,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:57:20,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:57:20,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:57:20,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:57:20,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:57:20,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:57:20,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:57:20,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:57:20,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:57:20,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:57:20,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:57:20,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:57:20,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:57:20,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:57:20,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:57:20,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:57:20,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:57:20,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:57:20,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:57:20,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:57:20,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:57:20,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:57:20,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:57:20,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:57:20,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:57:20,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:57:20,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:57:20,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:57:20,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:57:20,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:57:20,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:57:20,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:57:20,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:57:20,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:57:20,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:57:20,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:57:20,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:57:20,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:57:20,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:57:20,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 18:57:20,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:57:20,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:57:20,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:57:20,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:57:20,786 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:57:20,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:57:20,787 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:57:20,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:57:20,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:57:20,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:57:20,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:57:20,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:57:20,790 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 18:57:20,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:57:20,792 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:57:20,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:57:20,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:57:20,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:57:20,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:57:20,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:57:20,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:57:20,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:57:20,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:57:20,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:57:20,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:57:20,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:57:20,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:57:20,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:57:20,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0837a1e1d82be1b28ccf3514392f1b01c88a9160 [2020-11-29 18:57:21,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:57:21,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:57:21,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:57:21,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:57:21,153 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:57:21,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c [2020-11-29 18:57:21,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer/data/af44f019f/911a2650e94c4d67909b745a481f7d33/FLAG5465ba108 [2020-11-29 18:57:21,768 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:57:21,768 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c [2020-11-29 18:57:21,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer/data/af44f019f/911a2650e94c4d67909b745a481f7d33/FLAG5465ba108 [2020-11-29 18:57:22,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer/data/af44f019f/911a2650e94c4d67909b745a481f7d33 [2020-11-29 18:57:22,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:57:22,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:57:22,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:57:22,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:57:22,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:57:22,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:57:22" (1/1) ... [2020-11-29 18:57:22,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5ae819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22, skipping insertion in model container [2020-11-29 18:57:22,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:57:22" (1/1) ... [2020-11-29 18:57:22,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:57:22,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:57:22,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:57:22,423 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:57:22,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:57:22,463 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:57:22,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22 WrapperNode [2020-11-29 18:57:22,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:57:22,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:57:22,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:57:22,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:57:22,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22" (1/1) ... [2020-11-29 18:57:22,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22" (1/1) ... [2020-11-29 18:57:22,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:57:22,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:57:22,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:57:22,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:57:22,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22" (1/1) ... [2020-11-29 18:57:22,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22" (1/1) ... [2020-11-29 18:57:22,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22" (1/1) ... [2020-11-29 18:57:22,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22" (1/1) ... [2020-11-29 18:57:22,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22" (1/1) ... [2020-11-29 18:57:22,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22" (1/1) ... [2020-11-29 18:57:22,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22" (1/1) ... [2020-11-29 18:57:22,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:57:22,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:57:22,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:57:22,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:57:22,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/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 [2020-11-29 18:57:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2020-11-29 18:57:22,617 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2020-11-29 18:57:22,617 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2020-11-29 18:57:22,618 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2020-11-29 18:57:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:57:22,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:57:22,894 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:57:22,908 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-29 18:57:22,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:22 BoogieIcfgContainer [2020-11-29 18:57:22,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:57:22,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:57:22,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:57:22,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:57:22,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:57:22" (1/3) ... [2020-11-29 18:57:22,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76120e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:57:22, skipping insertion in model container [2020-11-29 18:57:22,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:57:22" (2/3) ... [2020-11-29 18:57:22,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76120e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:57:22, skipping insertion in model container [2020-11-29 18:57:22,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:22" (3/3) ... [2020-11-29 18:57:22,925 INFO L111 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1d.c [2020-11-29 18:57:22,937 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:57:22,963 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-11-29 18:57:22,980 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-11-29 18:57:23,038 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:57:23,038 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:57:23,038 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:57:23,038 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:57:23,039 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:57:23,039 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:57:23,039 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:57:23,039 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:57:23,067 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-29 18:57:23,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 18:57:23,072 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:23,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:23,082 INFO L429 AbstractCegarLoop]: === Iteration 1 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:23,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1656652383, now seen corresponding path program 1 times [2020-11-29 18:57:23,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:23,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121926167] [2020-11-29 18:57:23,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:23,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121926167] [2020-11-29 18:57:23,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:23,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:57:23,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598049527] [2020-11-29 18:57:23,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:57:23,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:23,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:57:23,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:57:23,385 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 7 states. [2020-11-29 18:57:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:23,747 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2020-11-29 18:57:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 18:57:23,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-11-29 18:57:23,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:23,776 INFO L225 Difference]: With dead ends: 86 [2020-11-29 18:57:23,778 INFO L226 Difference]: Without dead ends: 79 [2020-11-29 18:57:23,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:57:23,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-29 18:57:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2020-11-29 18:57:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 18:57:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2020-11-29 18:57:23,882 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 8 [2020-11-29 18:57:23,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:23,883 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2020-11-29 18:57:23,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:57:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2020-11-29 18:57:23,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 18:57:23,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:23,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:23,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:57:23,887 INFO L429 AbstractCegarLoop]: === Iteration 2 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:23,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:23,893 INFO L82 PathProgramCache]: Analyzing trace with hash -183383641, now seen corresponding path program 1 times [2020-11-29 18:57:23,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:23,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079766642] [2020-11-29 18:57:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:23,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079766642] [2020-11-29 18:57:23,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:23,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:57:23,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784892029] [2020-11-29 18:57:23,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:57:23,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:23,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:57:23,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:57:23,951 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 3 states. [2020-11-29 18:57:23,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:23,980 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2020-11-29 18:57:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:57:23,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 18:57:23,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:23,986 INFO L225 Difference]: With dead ends: 70 [2020-11-29 18:57:23,987 INFO L226 Difference]: Without dead ends: 69 [2020-11-29 18:57:23,991 INFO L677 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 [2020-11-29 18:57:23,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-29 18:57:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-11-29 18:57:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-29 18:57:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2020-11-29 18:57:24,023 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 9 [2020-11-29 18:57:24,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:24,024 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2020-11-29 18:57:24,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:57:24,025 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2020-11-29 18:57:24,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:57:24,027 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:24,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:24,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:57:24,029 INFO L429 AbstractCegarLoop]: === Iteration 3 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:24,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:24,032 INFO L82 PathProgramCache]: Analyzing trace with hash -138388889, now seen corresponding path program 1 times [2020-11-29 18:57:24,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:24,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551415201] [2020-11-29 18:57:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:24,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:24,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551415201] [2020-11-29 18:57:24,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:24,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:57:24,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051031771] [2020-11-29 18:57:24,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:57:24,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:24,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:57:24,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:57:24,095 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand 3 states. [2020-11-29 18:57:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:24,121 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2020-11-29 18:57:24,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:57:24,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-29 18:57:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:24,124 INFO L225 Difference]: With dead ends: 65 [2020-11-29 18:57:24,124 INFO L226 Difference]: Without dead ends: 64 [2020-11-29 18:57:24,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:57:24,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-29 18:57:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-11-29 18:57:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-29 18:57:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2020-11-29 18:57:24,146 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 11 [2020-11-29 18:57:24,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:24,146 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2020-11-29 18:57:24,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:57:24,146 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2020-11-29 18:57:24,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 18:57:24,149 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:24,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:24,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:57:24,149 INFO L429 AbstractCegarLoop]: === Iteration 4 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:24,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:24,150 INFO L82 PathProgramCache]: Analyzing trace with hash 4911801, now seen corresponding path program 1 times [2020-11-29 18:57:24,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:24,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426151890] [2020-11-29 18:57:24,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:24,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:24,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426151890] [2020-11-29 18:57:24,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:24,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:57:24,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273012966] [2020-11-29 18:57:24,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:57:24,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:24,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:57:24,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:57:24,205 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand 4 states. [2020-11-29 18:57:24,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:24,238 INFO L93 Difference]: Finished difference Result 85 states and 111 transitions. [2020-11-29 18:57:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:57:24,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 18:57:24,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:24,242 INFO L225 Difference]: With dead ends: 85 [2020-11-29 18:57:24,242 INFO L226 Difference]: Without dead ends: 84 [2020-11-29 18:57:24,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:57:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-29 18:57:24,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2020-11-29 18:57:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-29 18:57:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 96 transitions. [2020-11-29 18:57:24,256 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 96 transitions. Word has length 12 [2020-11-29 18:57:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:24,256 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 96 transitions. [2020-11-29 18:57:24,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:57:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 96 transitions. [2020-11-29 18:57:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 18:57:24,257 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:24,257 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:24,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 18:57:24,257 INFO L429 AbstractCegarLoop]: === Iteration 5 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:24,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:24,258 INFO L82 PathProgramCache]: Analyzing trace with hash 2115393736, now seen corresponding path program 1 times [2020-11-29 18:57:24,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:24,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029611565] [2020-11-29 18:57:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:24,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 18:57:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 18:57:24,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029611565] [2020-11-29 18:57:24,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:24,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:57:24,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273336825] [2020-11-29 18:57:24,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:57:24,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:24,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:57:24,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:57:24,330 INFO L87 Difference]: Start difference. First operand 74 states and 96 transitions. Second operand 3 states. [2020-11-29 18:57:24,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:24,357 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2020-11-29 18:57:24,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:57:24,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-29 18:57:24,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:24,363 INFO L225 Difference]: With dead ends: 74 [2020-11-29 18:57:24,363 INFO L226 Difference]: Without dead ends: 73 [2020-11-29 18:57:24,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:57:24,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-29 18:57:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-11-29 18:57:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-29 18:57:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2020-11-29 18:57:24,385 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 94 transitions. Word has length 16 [2020-11-29 18:57:24,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:24,386 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 94 transitions. [2020-11-29 18:57:24,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:57:24,386 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 94 transitions. [2020-11-29 18:57:24,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 18:57:24,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:24,387 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:24,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 18:57:24,388 INFO L429 AbstractCegarLoop]: === Iteration 6 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:24,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:24,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1152696420, now seen corresponding path program 1 times [2020-11-29 18:57:24,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:24,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487624610] [2020-11-29 18:57:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:24,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 18:57:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 18:57:24,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487624610] [2020-11-29 18:57:24,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:24,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:57:24,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343455754] [2020-11-29 18:57:24,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:57:24,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:24,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:57:24,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:57:24,444 INFO L87 Difference]: Start difference. First operand 73 states and 94 transitions. Second operand 4 states. [2020-11-29 18:57:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:24,474 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2020-11-29 18:57:24,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:57:24,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-29 18:57:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:24,478 INFO L225 Difference]: With dead ends: 94 [2020-11-29 18:57:24,478 INFO L226 Difference]: Without dead ends: 93 [2020-11-29 18:57:24,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:57:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-29 18:57:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2020-11-29 18:57:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-29 18:57:24,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2020-11-29 18:57:24,506 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 17 [2020-11-29 18:57:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:24,506 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2020-11-29 18:57:24,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:57:24,507 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2020-11-29 18:57:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 18:57:24,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:24,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:24,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 18:57:24,508 INFO L429 AbstractCegarLoop]: === Iteration 7 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:24,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:24,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1079409517, now seen corresponding path program 1 times [2020-11-29 18:57:24,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:24,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057353631] [2020-11-29 18:57:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:24,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:24,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:57:24,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057353631] [2020-11-29 18:57:24,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:24,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:57:24,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87622508] [2020-11-29 18:57:24,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:57:24,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:24,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:57:24,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:57:24,593 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand 5 states. [2020-11-29 18:57:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:24,700 INFO L93 Difference]: Finished difference Result 125 states and 159 transitions. [2020-11-29 18:57:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:57:24,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-29 18:57:24,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:24,709 INFO L225 Difference]: With dead ends: 125 [2020-11-29 18:57:24,709 INFO L226 Difference]: Without dead ends: 75 [2020-11-29 18:57:24,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:57:24,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-29 18:57:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-11-29 18:57:24,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-29 18:57:24,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2020-11-29 18:57:24,724 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 19 [2020-11-29 18:57:24,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:24,727 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2020-11-29 18:57:24,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:57:24,727 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2020-11-29 18:57:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 18:57:24,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:24,730 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:24,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 18:57:24,731 INFO L429 AbstractCegarLoop]: === Iteration 8 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:24,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1643853139, now seen corresponding path program 1 times [2020-11-29 18:57:24,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:24,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466870888] [2020-11-29 18:57:24,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:24,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 18:57:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 18:57:24,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466870888] [2020-11-29 18:57:24,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:24,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:57:24,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699468432] [2020-11-29 18:57:24,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:57:24,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:24,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:57:24,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:57:24,824 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand 6 states. [2020-11-29 18:57:24,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:24,941 INFO L93 Difference]: Finished difference Result 149 states and 206 transitions. [2020-11-29 18:57:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:57:24,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-29 18:57:24,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:24,950 INFO L225 Difference]: With dead ends: 149 [2020-11-29 18:57:24,950 INFO L226 Difference]: Without dead ends: 91 [2020-11-29 18:57:24,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 18:57:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-29 18:57:24,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2020-11-29 18:57:24,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-29 18:57:24,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2020-11-29 18:57:24,974 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 21 [2020-11-29 18:57:24,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:24,974 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2020-11-29 18:57:24,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:57:24,974 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2020-11-29 18:57:24,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 18:57:24,975 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:24,975 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:24,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 18:57:24,976 INFO L429 AbstractCegarLoop]: === Iteration 9 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:24,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:24,976 INFO L82 PathProgramCache]: Analyzing trace with hash 105489077, now seen corresponding path program 1 times [2020-11-29 18:57:24,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:24,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064587628] [2020-11-29 18:57:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 18:57:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-29 18:57:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-29 18:57:25,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064587628] [2020-11-29 18:57:25,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:25,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:57:25,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893112208] [2020-11-29 18:57:25,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:57:25,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:25,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:57:25,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:57:25,096 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand 6 states. [2020-11-29 18:57:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:25,214 INFO L93 Difference]: Finished difference Result 158 states and 210 transitions. [2020-11-29 18:57:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:57:25,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-11-29 18:57:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:25,217 INFO L225 Difference]: With dead ends: 158 [2020-11-29 18:57:25,218 INFO L226 Difference]: Without dead ends: 95 [2020-11-29 18:57:25,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:57:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-29 18:57:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2020-11-29 18:57:25,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 18:57:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 108 transitions. [2020-11-29 18:57:25,248 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 108 transitions. Word has length 32 [2020-11-29 18:57:25,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:25,248 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 108 transitions. [2020-11-29 18:57:25,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:57:25,249 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 108 transitions. [2020-11-29 18:57:25,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 18:57:25,250 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:25,250 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:25,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 18:57:25,250 INFO L429 AbstractCegarLoop]: === Iteration 10 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:25,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:25,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1291302577, now seen corresponding path program 1 times [2020-11-29 18:57:25,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:25,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747704722] [2020-11-29 18:57:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 18:57:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-29 18:57:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-29 18:57:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-29 18:57:25,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747704722] [2020-11-29 18:57:25,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:25,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:57:25,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926366315] [2020-11-29 18:57:25,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:57:25,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:25,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:57:25,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:57:25,304 INFO L87 Difference]: Start difference. First operand 87 states and 108 transitions. Second operand 4 states. [2020-11-29 18:57:25,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:25,341 INFO L93 Difference]: Finished difference Result 94 states and 118 transitions. [2020-11-29 18:57:25,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:57:25,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-29 18:57:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:25,344 INFO L225 Difference]: With dead ends: 94 [2020-11-29 18:57:25,344 INFO L226 Difference]: Without dead ends: 93 [2020-11-29 18:57:25,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:57:25,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-29 18:57:25,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-11-29 18:57:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-29 18:57:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 112 transitions. [2020-11-29 18:57:25,352 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 112 transitions. Word has length 35 [2020-11-29 18:57:25,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:25,353 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 112 transitions. [2020-11-29 18:57:25,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:57:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 112 transitions. [2020-11-29 18:57:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 18:57:25,354 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:25,354 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:25,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 18:57:25,354 INFO L429 AbstractCegarLoop]: === Iteration 11 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:25,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:25,355 INFO L82 PathProgramCache]: Analyzing trace with hash -552500514, now seen corresponding path program 1 times [2020-11-29 18:57:25,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:25,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466885356] [2020-11-29 18:57:25,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 18:57:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-29 18:57:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-11-29 18:57:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-29 18:57:25,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466885356] [2020-11-29 18:57:25,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:25,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:57:25,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950100488] [2020-11-29 18:57:25,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:57:25,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:25,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:57:25,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:57:25,394 INFO L87 Difference]: Start difference. First operand 91 states and 112 transitions. Second operand 3 states. [2020-11-29 18:57:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:25,423 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2020-11-29 18:57:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:57:25,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-29 18:57:25,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:25,425 INFO L225 Difference]: With dead ends: 91 [2020-11-29 18:57:25,425 INFO L226 Difference]: Without dead ends: 90 [2020-11-29 18:57:25,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:57:25,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-29 18:57:25,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-11-29 18:57:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-29 18:57:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2020-11-29 18:57:25,435 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 110 transitions. Word has length 31 [2020-11-29 18:57:25,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:25,435 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 110 transitions. [2020-11-29 18:57:25,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:57:25,435 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 110 transitions. [2020-11-29 18:57:25,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 18:57:25,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:25,449 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:25,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 18:57:25,449 INFO L429 AbstractCegarLoop]: === Iteration 12 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:25,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:25,449 INFO L82 PathProgramCache]: Analyzing trace with hash 930510463, now seen corresponding path program 1 times [2020-11-29 18:57:25,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:25,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375856310] [2020-11-29 18:57:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 18:57:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 18:57:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-29 18:57:25,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375856310] [2020-11-29 18:57:25,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:25,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:57:25,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088387464] [2020-11-29 18:57:25,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:57:25,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:25,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:57:25,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:57:25,559 INFO L87 Difference]: Start difference. First operand 90 states and 110 transitions. Second operand 6 states. [2020-11-29 18:57:25,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:25,603 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2020-11-29 18:57:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:57:25,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-11-29 18:57:25,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:25,605 INFO L225 Difference]: With dead ends: 90 [2020-11-29 18:57:25,605 INFO L226 Difference]: Without dead ends: 89 [2020-11-29 18:57:25,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:57:25,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-29 18:57:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-11-29 18:57:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-29 18:57:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 108 transitions. [2020-11-29 18:57:25,621 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 108 transitions. Word has length 36 [2020-11-29 18:57:25,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:25,621 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 108 transitions. [2020-11-29 18:57:25,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:57:25,622 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 108 transitions. [2020-11-29 18:57:25,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 18:57:25,623 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:25,623 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:25,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 18:57:25,624 INFO L429 AbstractCegarLoop]: === Iteration 13 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:25,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:25,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1111626321, now seen corresponding path program 1 times [2020-11-29 18:57:25,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:25,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595537123] [2020-11-29 18:57:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 18:57:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 18:57:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 18:57:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-29 18:57:25,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595537123] [2020-11-29 18:57:25,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:25,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:57:25,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655547821] [2020-11-29 18:57:25,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:57:25,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:25,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:57:25,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:57:25,736 INFO L87 Difference]: Start difference. First operand 89 states and 108 transitions. Second operand 6 states. [2020-11-29 18:57:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:25,822 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2020-11-29 18:57:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:57:25,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-11-29 18:57:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:25,824 INFO L225 Difference]: With dead ends: 99 [2020-11-29 18:57:25,825 INFO L226 Difference]: Without dead ends: 98 [2020-11-29 18:57:25,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:57:25,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-29 18:57:25,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 88. [2020-11-29 18:57:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-29 18:57:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2020-11-29 18:57:25,838 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 46 [2020-11-29 18:57:25,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:25,839 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2020-11-29 18:57:25,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:57:25,839 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2020-11-29 18:57:25,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 18:57:25,841 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:25,841 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:25,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 18:57:25,842 INFO L429 AbstractCegarLoop]: === Iteration 14 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:25,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:25,842 INFO L82 PathProgramCache]: Analyzing trace with hash 138300185, now seen corresponding path program 1 times [2020-11-29 18:57:25,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:25,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664378308] [2020-11-29 18:57:25,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 18:57:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 18:57:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 18:57:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-29 18:57:25,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664378308] [2020-11-29 18:57:25,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876023841] [2020-11-29 18:57:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/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 [2020-11-29 18:57:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:26,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 18:57:26,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:57:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-29 18:57:26,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:57:26,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-11-29 18:57:26,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015087563] [2020-11-29 18:57:26,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:57:26,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:26,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:57:26,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-29 18:57:26,341 INFO L87 Difference]: Start difference. First operand 88 states and 106 transitions. Second operand 7 states. [2020-11-29 18:57:26,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:26,657 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2020-11-29 18:57:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 18:57:26,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-11-29 18:57:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:26,659 INFO L225 Difference]: With dead ends: 116 [2020-11-29 18:57:26,659 INFO L226 Difference]: Without dead ends: 115 [2020-11-29 18:57:26,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-11-29 18:57:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-29 18:57:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2020-11-29 18:57:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-29 18:57:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2020-11-29 18:57:26,688 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 45 [2020-11-29 18:57:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:26,689 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2020-11-29 18:57:26,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:57:26,689 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2020-11-29 18:57:26,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 18:57:26,697 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:26,698 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:26,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 18:57:26,924 INFO L429 AbstractCegarLoop]: === Iteration 15 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:26,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:26,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1156205799, now seen corresponding path program 1 times [2020-11-29 18:57:26,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:26,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831890438] [2020-11-29 18:57:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:26,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 18:57:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 18:57:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-29 18:57:27,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831890438] [2020-11-29 18:57:27,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358179920] [2020-11-29 18:57:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/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 [2020-11-29 18:57:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 18:57:27,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:57:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-29 18:57:27,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:57:27,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-29 18:57:27,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268425870] [2020-11-29 18:57:27,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 18:57:27,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:27,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 18:57:27,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-29 18:57:27,120 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand 8 states. [2020-11-29 18:57:27,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:27,214 INFO L93 Difference]: Finished difference Result 224 states and 282 transitions. [2020-11-29 18:57:27,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 18:57:27,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-11-29 18:57:27,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:27,216 INFO L225 Difference]: With dead ends: 224 [2020-11-29 18:57:27,216 INFO L226 Difference]: Without dead ends: 145 [2020-11-29 18:57:27,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:57:27,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-29 18:57:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 132. [2020-11-29 18:57:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-29 18:57:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 164 transitions. [2020-11-29 18:57:27,235 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 164 transitions. Word has length 43 [2020-11-29 18:57:27,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:27,236 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 164 transitions. [2020-11-29 18:57:27,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 18:57:27,236 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 164 transitions. [2020-11-29 18:57:27,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 18:57:27,238 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:27,238 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:27,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 18:57:27,460 INFO L429 AbstractCegarLoop]: === Iteration 16 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:27,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:27,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1154921966, now seen corresponding path program 1 times [2020-11-29 18:57:27,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:27,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651157793] [2020-11-29 18:57:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 18:57:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 18:57:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-29 18:57:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-29 18:57:27,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651157793] [2020-11-29 18:57:27,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:27,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:57:27,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263938145] [2020-11-29 18:57:27,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:57:27,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:27,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:57:27,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:57:27,507 INFO L87 Difference]: Start difference. First operand 132 states and 164 transitions. Second operand 3 states. [2020-11-29 18:57:27,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:27,519 INFO L93 Difference]: Finished difference Result 132 states and 164 transitions. [2020-11-29 18:57:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:57:27,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-11-29 18:57:27,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:27,521 INFO L225 Difference]: With dead ends: 132 [2020-11-29 18:57:27,521 INFO L226 Difference]: Without dead ends: 131 [2020-11-29 18:57:27,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:57:27,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-29 18:57:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-11-29 18:57:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-29 18:57:27,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 162 transitions. [2020-11-29 18:57:27,534 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 162 transitions. Word has length 43 [2020-11-29 18:57:27,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:27,536 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 162 transitions. [2020-11-29 18:57:27,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:57:27,536 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2020-11-29 18:57:27,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-29 18:57:27,537 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:27,537 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:27,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 18:57:27,537 INFO L429 AbstractCegarLoop]: === Iteration 17 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:27,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1442842648, now seen corresponding path program 1 times [2020-11-29 18:57:27,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:27,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978938314] [2020-11-29 18:57:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 18:57:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 18:57:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-29 18:57:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-29 18:57:27,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978938314] [2020-11-29 18:57:27,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:57:27,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:57:27,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992473352] [2020-11-29 18:57:27,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:57:27,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:27,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:57:27,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:57:27,592 INFO L87 Difference]: Start difference. First operand 131 states and 162 transitions. Second operand 4 states. [2020-11-29 18:57:27,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:27,613 INFO L93 Difference]: Finished difference Result 140 states and 172 transitions. [2020-11-29 18:57:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:57:27,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-11-29 18:57:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:27,615 INFO L225 Difference]: With dead ends: 140 [2020-11-29 18:57:27,615 INFO L226 Difference]: Without dead ends: 132 [2020-11-29 18:57:27,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:57:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-29 18:57:27,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-11-29 18:57:27,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-29 18:57:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 161 transitions. [2020-11-29 18:57:27,626 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 161 transitions. Word has length 44 [2020-11-29 18:57:27,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:27,626 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 161 transitions. [2020-11-29 18:57:27,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:57:27,626 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 161 transitions. [2020-11-29 18:57:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-29 18:57:27,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:57:27,647 INFO L422 BasicCegarLoop]: trace histogram [10, 8, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 18:57:27,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 18:57:27,647 INFO L429 AbstractCegarLoop]: === Iteration 18 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:57:27,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:57:27,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1995865818, now seen corresponding path program 2 times [2020-11-29 18:57:27,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:57:27,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883189417] [2020-11-29 18:57:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:57:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-29 18:57:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 18:57:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 18:57:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-29 18:57:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 18:57:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 18:57:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-29 18:57:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:57:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 64 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-11-29 18:57:27,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883189417] [2020-11-29 18:57:27,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670324058] [2020-11-29 18:57:27,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/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 [2020-11-29 18:57:27,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:57:27,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:57:27,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 18:57:27,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:57:27,905 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 64 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-11-29 18:57:27,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:57:27,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-29 18:57:27,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141470033] [2020-11-29 18:57:27,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 18:57:27,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:57:27,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 18:57:27,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:57:27,909 INFO L87 Difference]: Start difference. First operand 132 states and 161 transitions. Second operand 9 states. [2020-11-29 18:57:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:57:28,052 INFO L93 Difference]: Finished difference Result 173 states and 211 transitions. [2020-11-29 18:57:28,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 18:57:28,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-11-29 18:57:28,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:57:28,055 INFO L225 Difference]: With dead ends: 173 [2020-11-29 18:57:28,055 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 18:57:28,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-11-29 18:57:28,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 18:57:28,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 18:57:28,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 18:57:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:57:28,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2020-11-29 18:57:28,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:57:28,058 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:57:28,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 18:57:28,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:57:28,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 18:57:28,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 18:57:28,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 18:57:28,725 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 12 [2020-11-29 18:57:28,886 INFO L274 CegarLoopResult]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,886 INFO L274 CegarLoopResult]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2020-11-29 18:57:28,886 INFO L274 CegarLoopResult]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,886 INFO L274 CegarLoopResult]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2020-11-29 18:57:28,886 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,887 INFO L277 CegarLoopResult]: At program point rec1ENTRY(lines 11 15) the Hoare annotation is: true [2020-11-29 18:57:28,887 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,887 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-29 18:57:28,887 INFO L270 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (or (not (<= |rec1_#in~i| 2147483647)) (and (= |rec1_#in~i| rec1_~i) (<= 1 rec1_~i))) [2020-11-29 18:57:28,887 INFO L274 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,887 INFO L274 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,887 INFO L274 CegarLoopResult]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,887 INFO L274 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,887 INFO L270 CegarLoopResult]: At program point L14-6(line 14) the Hoare annotation is: (or (and (= |rec1_#in~i| rec1_~i) (<= 1 |rec1_#in~i|) (<= |rec1_#t~ret0| 1)) (not (<= |rec1_#in~i| 2147483647))) [2020-11-29 18:57:28,887 INFO L274 CegarLoopResult]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,888 INFO L274 CegarLoopResult]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,888 INFO L274 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,888 INFO L274 CegarLoopResult]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,888 INFO L270 CegarLoopResult]: At program point L14-8(line 14) the Hoare annotation is: (let ((.cse0 (not (<= |rec1_#in~i| 2147483647)))) (and (or .cse0 (and (= |rec1_#in~i| rec1_~i) (<= 1 rec1_~i) (<= |rec1_#t~ret1| 0))) (or .cse0 (<= |rec1_#t~ret0| 1)))) [2020-11-29 18:57:28,888 INFO L274 CegarLoopResult]: For program point L14-9(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,889 INFO L274 CegarLoopResult]: For program point L14-10(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,890 INFO L274 CegarLoopResult]: For program point L14-11(line 14) no Hoare annotation was computed. [2020-11-29 18:57:28,890 INFO L274 CegarLoopResult]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-29 18:57:28,890 INFO L274 CegarLoopResult]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2020-11-29 18:57:28,890 INFO L274 CegarLoopResult]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2020-11-29 18:57:28,890 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (or (not (<= |rec2_#in~j| 2147483647)) (and (<= rec2_~j 2147483647) (<= 1 rec2_~j))) (not (<= |rec2_#in~j| 0))) [2020-11-29 18:57:28,890 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-29 18:57:28,890 INFO L274 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-11-29 18:57:28,890 INFO L274 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-11-29 18:57:28,890 INFO L274 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-11-29 18:57:28,890 INFO L270 CegarLoopResult]: At program point L20-4(line 20) the Hoare annotation is: (and (or (not (<= |rec2_#in~j| 2147483647)) (and (<= |rec2_#t~ret3| 1) (<= rec2_~j 2147483647) (<= 1 rec2_~j) (<= 1 |rec2_#t~ret3|))) (not (<= |rec2_#in~j| 0))) [2020-11-29 18:57:28,891 INFO L274 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2020-11-29 18:57:28,891 INFO L274 CegarLoopResult]: For program point L20-6(line 20) no Hoare annotation was computed. [2020-11-29 18:57:28,891 INFO L274 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2020-11-29 18:57:28,891 INFO L277 CegarLoopResult]: At program point rec2ENTRY(lines 17 21) the Hoare annotation is: true [2020-11-29 18:57:28,891 INFO L274 CegarLoopResult]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-29 18:57:28,891 INFO L274 CegarLoopResult]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-29 18:57:28,891 INFO L274 CegarLoopResult]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-29 18:57:28,891 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 18:57:28,891 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 18:57:28,891 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 18:57:28,891 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-29 18:57:28,891 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-29 18:57:28,891 INFO L274 CegarLoopResult]: For program point L23(lines 23 26) no Hoare annotation was computed. [2020-11-29 18:57:28,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:57:28 BoogieIcfgContainer [2020-11-29 18:57:28,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:57:28,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:57:28,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:57:28,898 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:57:28,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:57:22" (3/4) ... [2020-11-29 18:57:28,901 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 18:57:28,912 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2020-11-29 18:57:28,912 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2020-11-29 18:57:28,922 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-29 18:57:28,923 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 18:57:28,987 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_272ff647-7ebe-4090-bb63-08ba9b584c22/bin/uautomizer/witness.graphml [2020-11-29 18:57:28,991 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:57:28,993 INFO L168 Benchmark]: Toolchain (without parser) took 6842.24 ms. Allocated memory was 83.9 MB in the beginning and 130.0 MB in the end (delta: 46.1 MB). Free memory was 45.0 MB in the beginning and 55.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:28,993 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory is still 61.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:57:28,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.97 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 44.8 MB in the beginning and 80.0 MB in the end (delta: -35.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:28,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.24 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 78.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:28,994 INFO L168 Benchmark]: Boogie Preprocessor took 28.68 ms. Allocated memory is still 107.0 MB. Free memory was 78.6 MB in the beginning and 77.9 MB in the end (delta: 757.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:57:28,995 INFO L168 Benchmark]: RCFGBuilder took 375.96 ms. Allocated memory is still 107.0 MB. Free memory was 77.9 MB in the beginning and 65.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:28,995 INFO L168 Benchmark]: TraceAbstraction took 5985.24 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 65.3 MB in the beginning and 58.2 MB in the end (delta: 7.1 MB). Peak memory consumption was 57.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:28,995 INFO L168 Benchmark]: Witness Printer took 93.72 ms. Allocated memory is still 130.0 MB. Free memory was 58.2 MB in the beginning and 55.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:57:28,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory is still 61.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.97 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 44.8 MB in the beginning and 80.0 MB in the end (delta: -35.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.24 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 78.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.68 ms. Allocated memory is still 107.0 MB. Free memory was 78.6 MB in the beginning and 77.9 MB in the end (delta: 757.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 375.96 ms. Allocated memory is still 107.0 MB. Free memory was 77.9 MB in the beginning and 65.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5985.24 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 65.3 MB in the beginning and 58.2 MB in the end (delta: 7.1 MB). Peak memory consumption was 57.5 MB. Max. memory is 16.1 GB. * Witness Printer took 93.72 ms. Allocated memory is still 130.0 MB. Free memory was 58.2 MB in the beginning and 55.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: 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: 20]: 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: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 18, TraceHistogramMax: 10, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 688 SDtfs, 231 SDslu, 1656 SDs, 0 SdLazy, 529 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 354 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 89 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 241 PreInvPairs, 259 NumberOfFragments, 96 HoareAnnotationTreeSize, 241 FomulaSimplifications, 973 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 8 FomulaSimplificationsInter, 313 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 706 NumberOfCodeBlocks, 706 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 685 ConstructedInterpolants, 0 QuantifiedInterpolants, 45897 SizeOfPredicates, 4 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 21 InterpolantComputations, 16 PerfectInterpolantSequences, 690/752 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...