./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.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_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/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 ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:27,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:27,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:27,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:27,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:27,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:27,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:27,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:27,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:27,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:27,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:27,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:27,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:27,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:27,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:27,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:27,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:27,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:27,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:27,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:27,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:27,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:27,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:27,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:27,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:27,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:27,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:27,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:27,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:27,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:27,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:27,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:27,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:27,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:27,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:27,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:27,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:27,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:27,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:27,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:27,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:27,782 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 02:56:27,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:27,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:27,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:27,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:27,833 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:27,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:27,834 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:27,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:27,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:27,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:27,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:27,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:27,836 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 02:56:27,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:27,837 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:27,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:27,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:27,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:27,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:27,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:27,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:27,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:27,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:27,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:27,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:27,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:27,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:27,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:27,840 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_06f6ca92-d98c-4a86-b1f5-34141d804209/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d [2020-11-28 02:56:28,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:28,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:28,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:28,162 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:28,164 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:28,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-11-28 02:56:28,245 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/data/64f12ef5c/8b1ba915b76c4a2882efb2afc03b6281/FLAG09194120c [2020-11-28 02:56:28,815 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:28,817 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-11-28 02:56:28,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/data/64f12ef5c/8b1ba915b76c4a2882efb2afc03b6281/FLAG09194120c [2020-11-28 02:56:29,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/data/64f12ef5c/8b1ba915b76c4a2882efb2afc03b6281 [2020-11-28 02:56:29,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:29,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:29,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:29,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:29,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:29,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:29" (1/1) ... [2020-11-28 02:56:29,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a881ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29, skipping insertion in model container [2020-11-28 02:56:29,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:29" (1/1) ... [2020-11-28 02:56:29,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:29,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:29,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:29,371 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:29,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:29,400 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:29,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29 WrapperNode [2020-11-28 02:56:29,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:29,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:29,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:29,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:29,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29" (1/1) ... [2020-11-28 02:56:29,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29" (1/1) ... [2020-11-28 02:56:29,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:29,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:29,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:29,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:29,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29" (1/1) ... [2020-11-28 02:56:29,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29" (1/1) ... [2020-11-28 02:56:29,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29" (1/1) ... [2020-11-28 02:56:29,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29" (1/1) ... [2020-11-28 02:56:29,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29" (1/1) ... [2020-11-28 02:56:29,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29" (1/1) ... [2020-11-28 02:56:29,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29" (1/1) ... [2020-11-28 02:56:29,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:29,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:29,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:29,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:29,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/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 [2020-11-28 02:56:29,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:29,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:29,833 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:29,834 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 02:56:29,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:29 BoogieIcfgContainer [2020-11-28 02:56:29,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:29,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:29,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:29,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:29,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:29" (1/3) ... [2020-11-28 02:56:29,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4358b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:29, skipping insertion in model container [2020-11-28 02:56:29,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:29" (2/3) ... [2020-11-28 02:56:29,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4358b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:29, skipping insertion in model container [2020-11-28 02:56:29,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:29" (3/3) ... [2020-11-28 02:56:29,845 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-11-28 02:56:29,856 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:29,860 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-28 02:56:29,872 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-28 02:56:29,896 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:29,896 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:29,896 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:29,897 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:29,897 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:29,897 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:29,897 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:29,897 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:29,920 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-28 02:56:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 02:56:29,928 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:29,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:29,930 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:29,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:29,938 INFO L82 PathProgramCache]: Analyzing trace with hash 29685899, now seen corresponding path program 1 times [2020-11-28 02:56:29,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:29,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430281958] [2020-11-28 02:56:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430281958] [2020-11-28 02:56:30,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:30,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:30,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674978252] [2020-11-28 02:56:30,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:56:30,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:56:30,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:30,099 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-11-28 02:56:30,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:30,116 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-11-28 02:56:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:56:30,117 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-28 02:56:30,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:30,125 INFO L225 Difference]: With dead ends: 50 [2020-11-28 02:56:30,125 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 02:56:30,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 02:56:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-28 02:56:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 02:56:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-11-28 02:56:30,161 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 5 [2020-11-28 02:56:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:30,161 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-28 02:56:30,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:56:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-28 02:56:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 02:56:30,162 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:30,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:30,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:30,163 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:30,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,164 INFO L82 PathProgramCache]: Analyzing trace with hash 29685000, now seen corresponding path program 1 times [2020-11-28 02:56:30,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913585744] [2020-11-28 02:56:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913585744] [2020-11-28 02:56:30,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:30,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:30,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751071113] [2020-11-28 02:56:30,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:30,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:30,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:30,220 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 3 states. [2020-11-28 02:56:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:30,315 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-11-28 02:56:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:30,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 02:56:30,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:30,317 INFO L225 Difference]: With dead ends: 41 [2020-11-28 02:56:30,317 INFO L226 Difference]: Without dead ends: 40 [2020-11-28 02:56:30,318 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 [2020-11-28 02:56:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-28 02:56:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 25. [2020-11-28 02:56:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 02:56:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-11-28 02:56:30,325 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2020-11-28 02:56:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:30,325 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-28 02:56:30,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-11-28 02:56:30,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 02:56:30,326 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:30,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:30,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:30,327 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,328 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2020-11-28 02:56:30,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396024644] [2020-11-28 02:56:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396024644] [2020-11-28 02:56:30,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:30,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:30,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754902659] [2020-11-28 02:56:30,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:30,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:30,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:30,359 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2020-11-28 02:56:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:30,401 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-11-28 02:56:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:30,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 02:56:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:30,403 INFO L225 Difference]: With dead ends: 34 [2020-11-28 02:56:30,403 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 02:56:30,404 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 [2020-11-28 02:56:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 02:56:30,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2020-11-28 02:56:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:56:30,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-11-28 02:56:30,410 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 5 [2020-11-28 02:56:30,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:30,410 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-11-28 02:56:30,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-11-28 02:56:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 02:56:30,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:30,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:56:30,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:56:30,412 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,413 INFO L82 PathProgramCache]: Analyzing trace with hash 920235084, now seen corresponding path program 1 times [2020-11-28 02:56:30,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58743690] [2020-11-28 02:56:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58743690] [2020-11-28 02:56:30,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:30,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:30,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894757045] [2020-11-28 02:56:30,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:30,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:30,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:30,458 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2020-11-28 02:56:30,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:30,510 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-11-28 02:56:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:30,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 02:56:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:30,512 INFO L225 Difference]: With dead ends: 45 [2020-11-28 02:56:30,512 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 02:56:30,513 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 [2020-11-28 02:56:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 02:56:30,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-11-28 02:56:30,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 02:56:30,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-11-28 02:56:30,520 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 6 [2020-11-28 02:56:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:30,520 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-11-28 02:56:30,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:30,520 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-11-28 02:56:30,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 02:56:30,521 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:30,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:56:30,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:56:30,521 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:30,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,522 INFO L82 PathProgramCache]: Analyzing trace with hash 920236110, now seen corresponding path program 1 times [2020-11-28 02:56:30,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684216407] [2020-11-28 02:56:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684216407] [2020-11-28 02:56:30,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:30,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:30,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870860973] [2020-11-28 02:56:30,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:30,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:30,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:30,586 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 3 states. [2020-11-28 02:56:30,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:30,612 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-11-28 02:56:30,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:30,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 02:56:30,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:30,616 INFO L225 Difference]: With dead ends: 31 [2020-11-28 02:56:30,616 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 02:56:30,617 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 [2020-11-28 02:56:30,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 02:56:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-28 02:56:30,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 02:56:30,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-11-28 02:56:30,623 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 6 [2020-11-28 02:56:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:30,623 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-11-28 02:56:30,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-11-28 02:56:30,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:56:30,624 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:30,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:30,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:56:30,624 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:30,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1537451600, now seen corresponding path program 1 times [2020-11-28 02:56:30,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596417566] [2020-11-28 02:56:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596417566] [2020-11-28 02:56:30,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:30,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 02:56:30,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97482457] [2020-11-28 02:56:30,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:30,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:30,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:30,675 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2020-11-28 02:56:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:30,689 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-11-28 02:56:30,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:30,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-28 02:56:30,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:30,691 INFO L225 Difference]: With dead ends: 30 [2020-11-28 02:56:30,691 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 02:56:30,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 02:56:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 02:56:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 02:56:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-11-28 02:56:30,697 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 7 [2020-11-28 02:56:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:30,697 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-11-28 02:56:30,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:30,697 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-11-28 02:56:30,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 02:56:30,698 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:30,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:30,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:56:30,698 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:30,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,699 INFO L82 PathProgramCache]: Analyzing trace with hash -416359280, now seen corresponding path program 1 times [2020-11-28 02:56:30,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988091820] [2020-11-28 02:56:30,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988091820] [2020-11-28 02:56:30,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:30,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:30,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666655282] [2020-11-28 02:56:30,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:30,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:30,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:30,742 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 3 states. [2020-11-28 02:56:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:30,764 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-11-28 02:56:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:30,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 02:56:30,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:30,767 INFO L225 Difference]: With dead ends: 29 [2020-11-28 02:56:30,767 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 02:56:30,768 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 [2020-11-28 02:56:30,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 02:56:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-28 02:56:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 02:56:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-28 02:56:30,779 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 8 [2020-11-28 02:56:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:30,780 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-28 02:56:30,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-28 02:56:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:56:30,781 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:30,781 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-11-28 02:56:30,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:56:30,782 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,783 INFO L82 PathProgramCache]: Analyzing trace with hash -52819969, now seen corresponding path program 1 times [2020-11-28 02:56:30,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54697387] [2020-11-28 02:56:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54697387] [2020-11-28 02:56:30,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991270836] [2020-11-28 02:56:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/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 [2020-11-28 02:56:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:56:30,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:30,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-28 02:56:30,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979977892] [2020-11-28 02:56:30,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:30,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:30,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:30,963 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-11-28 02:56:31,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:31,032 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-11-28 02:56:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:31,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 02:56:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:31,049 INFO L225 Difference]: With dead ends: 54 [2020-11-28 02:56:31,049 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 02:56:31,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 02:56:31,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2020-11-28 02:56:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 02:56:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-11-28 02:56:31,057 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 9 [2020-11-28 02:56:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:31,057 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-11-28 02:56:31,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:31,057 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-11-28 02:56:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:56:31,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:31,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:31,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-11-28 02:56:31,280 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:31,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:31,280 INFO L82 PathProgramCache]: Analyzing trace with hash -689307342, now seen corresponding path program 1 times [2020-11-28 02:56:31,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:31,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873245907] [2020-11-28 02:56:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:31,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873245907] [2020-11-28 02:56:31,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:31,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:31,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088026757] [2020-11-28 02:56:31,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:31,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:31,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:31,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:31,342 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 4 states. [2020-11-28 02:56:31,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:31,456 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-11-28 02:56:31,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:56:31,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 02:56:31,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:31,457 INFO L225 Difference]: With dead ends: 64 [2020-11-28 02:56:31,458 INFO L226 Difference]: Without dead ends: 62 [2020-11-28 02:56:31,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-28 02:56:31,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2020-11-28 02:56:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 02:56:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-11-28 02:56:31,465 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 10 [2020-11-28 02:56:31,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:31,466 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-11-28 02:56:31,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-11-28 02:56:31,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:56:31,467 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:31,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:31,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:56:31,467 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:31,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:31,468 INFO L82 PathProgramCache]: Analyzing trace with hash 106308951, now seen corresponding path program 1 times [2020-11-28 02:56:31,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:31,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70945213] [2020-11-28 02:56:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:31,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70945213] [2020-11-28 02:56:31,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:31,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:31,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455700612] [2020-11-28 02:56:31,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:31,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:31,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:31,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:31,504 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 4 states. [2020-11-28 02:56:31,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:31,602 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-11-28 02:56:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:31,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:56:31,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:31,603 INFO L225 Difference]: With dead ends: 46 [2020-11-28 02:56:31,603 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 02:56:31,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:31,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 02:56:31,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-11-28 02:56:31,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 02:56:31,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-11-28 02:56:31,608 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 11 [2020-11-28 02:56:31,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:31,608 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-11-28 02:56:31,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:31,609 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-11-28 02:56:31,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:56:31,609 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:31,609 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:31,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:56:31,610 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:31,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:31,610 INFO L82 PathProgramCache]: Analyzing trace with hash -999444228, now seen corresponding path program 1 times [2020-11-28 02:56:31,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:31,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029496927] [2020-11-28 02:56:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:31,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029496927] [2020-11-28 02:56:31,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375117740] [2020-11-28 02:56:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-28 02:56:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:31,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:56:31,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:31,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:31,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-28 02:56:31,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187204265] [2020-11-28 02:56:31,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:31,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:31,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:31,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:31,709 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 4 states. [2020-11-28 02:56:31,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:31,746 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-11-28 02:56:31,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:31,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 02:56:31,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:31,747 INFO L225 Difference]: With dead ends: 66 [2020-11-28 02:56:31,748 INFO L226 Difference]: Without dead ends: 65 [2020-11-28 02:56:31,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:31,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-28 02:56:31,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2020-11-28 02:56:31,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-28 02:56:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-11-28 02:56:31,755 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 12 [2020-11-28 02:56:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:31,756 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-11-28 02:56:31,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:31,756 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-11-28 02:56:31,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:56:31,756 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:31,757 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2020-11-28 02:56:31,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:31,973 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:31,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:31,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1890502518, now seen corresponding path program 2 times [2020-11-28 02:56:31,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:31,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381792222] [2020-11-28 02:56:31,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 02:56:32,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381792222] [2020-11-28 02:56:32,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88614641] [2020-11-28 02:56:32,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/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 [2020-11-28 02:56:32,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 02:56:32,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:32,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:56:32,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 02:56:32,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:32,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-11-28 02:56:32,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919488365] [2020-11-28 02:56:32,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:32,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:32,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:32,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:32,089 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 4 states. [2020-11-28 02:56:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:32,129 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-11-28 02:56:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:32,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 02:56:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:32,131 INFO L225 Difference]: With dead ends: 56 [2020-11-28 02:56:32,132 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 02:56:32,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 02:56:32,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-11-28 02:56:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-28 02:56:32,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2020-11-28 02:56:32,142 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 13 [2020-11-28 02:56:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:32,142 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2020-11-28 02:56:32,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:32,143 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2020-11-28 02:56:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:56:32,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:32,145 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:32,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 02:56:32,360 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:32,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:32,360 INFO L82 PathProgramCache]: Analyzing trace with hash -575852389, now seen corresponding path program 1 times [2020-11-28 02:56:32,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:32,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124682159] [2020-11-28 02:56:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 02:56:32,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124682159] [2020-11-28 02:56:32,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:32,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:32,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871031383] [2020-11-28 02:56:32,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:32,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:32,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:32,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:32,400 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand 4 states. [2020-11-28 02:56:32,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:32,441 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2020-11-28 02:56:32,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:32,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 02:56:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:32,443 INFO L225 Difference]: With dead ends: 48 [2020-11-28 02:56:32,443 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 02:56:32,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:32,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 02:56:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-28 02:56:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 02:56:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-11-28 02:56:32,450 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 14 [2020-11-28 02:56:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:32,451 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-11-28 02:56:32,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:32,451 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-11-28 02:56:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:56:32,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:32,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:32,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 02:56:32,453 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:32,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:32,454 INFO L82 PathProgramCache]: Analyzing trace with hash 656583171, now seen corresponding path program 1 times [2020-11-28 02:56:32,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:32,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050519778] [2020-11-28 02:56:32,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:32,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050519778] [2020-11-28 02:56:32,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105746580] [2020-11-28 02:56:32,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:32,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:56:32,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:32,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:32,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 02:56:32,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478924334] [2020-11-28 02:56:32,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:32,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:32,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:32,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:32,554 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 6 states. [2020-11-28 02:56:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:32,642 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2020-11-28 02:56:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:32,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 02:56:32,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:32,643 INFO L225 Difference]: With dead ends: 78 [2020-11-28 02:56:32,643 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 02:56:32,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:32,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 02:56:32,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-28 02:56:32,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 02:56:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-11-28 02:56:32,650 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 16 [2020-11-28 02:56:32,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:32,650 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-11-28 02:56:32,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:32,650 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-11-28 02:56:32,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:56:32,651 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:32,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:32,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:32,852 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:32,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:32,852 INFO L82 PathProgramCache]: Analyzing trace with hash 471235363, now seen corresponding path program 1 times [2020-11-28 02:56:32,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:32,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263150772] [2020-11-28 02:56:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:32,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263150772] [2020-11-28 02:56:32,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356903452] [2020-11-28 02:56:32,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:32,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:56:32,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:32,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:32,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-28 02:56:32,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904077515] [2020-11-28 02:56:32,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:32,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:32,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:32,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:32,999 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-11-28 02:56:33,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:33,144 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2020-11-28 02:56:33,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:56:33,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 02:56:33,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:33,146 INFO L225 Difference]: With dead ends: 116 [2020-11-28 02:56:33,146 INFO L226 Difference]: Without dead ends: 115 [2020-11-28 02:56:33,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:56:33,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-28 02:56:33,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 68. [2020-11-28 02:56:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-28 02:56:33,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-11-28 02:56:33,156 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 17 [2020-11-28 02:56:33,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:33,157 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-11-28 02:56:33,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:33,157 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-11-28 02:56:33,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:56:33,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:33,158 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-28 02:56:33,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-28 02:56:33,372 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:33,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:33,372 INFO L82 PathProgramCache]: Analyzing trace with hash -415013654, now seen corresponding path program 2 times [2020-11-28 02:56:33,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:33,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090614364] [2020-11-28 02:56:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-28 02:56:33,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090614364] [2020-11-28 02:56:33,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391070248] [2020-11-28 02:56:33,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:33,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 02:56:33,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:33,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:56:33,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-28 02:56:33,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:33,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-11-28 02:56:33,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622087627] [2020-11-28 02:56:33,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:33,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:33,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:33,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:33,473 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 4 states. [2020-11-28 02:56:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:33,506 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2020-11-28 02:56:33,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:33,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-28 02:56:33,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:33,510 INFO L225 Difference]: With dead ends: 68 [2020-11-28 02:56:33,510 INFO L226 Difference]: Without dead ends: 67 [2020-11-28 02:56:33,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:33,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-28 02:56:33,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 39. [2020-11-28 02:56:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 02:56:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-11-28 02:56:33,524 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 19 [2020-11-28 02:56:33,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:33,525 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-11-28 02:56:33,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-11-28 02:56:33,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:56:33,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:33,527 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:33,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:33,752 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:33,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:33,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2095953530, now seen corresponding path program 2 times [2020-11-28 02:56:33,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:33,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814585335] [2020-11-28 02:56:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:33,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814585335] [2020-11-28 02:56:33,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534261596] [2020-11-28 02:56:33,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:33,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:56:33,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:33,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:56:33,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:33,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:33,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-28 02:56:33,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5697545] [2020-11-28 02:56:33,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:56:33,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:33,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:33,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:33,889 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2020-11-28 02:56:34,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:34,108 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2020-11-28 02:56:34,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 02:56:34,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-28 02:56:34,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:34,118 INFO L225 Difference]: With dead ends: 92 [2020-11-28 02:56:34,118 INFO L226 Difference]: Without dead ends: 91 [2020-11-28 02:56:34,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-11-28 02:56:34,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-28 02:56:34,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 44. [2020-11-28 02:56:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-28 02:56:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-11-28 02:56:34,133 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 22 [2020-11-28 02:56:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:34,133 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-11-28 02:56:34,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:56:34,134 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-11-28 02:56:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 02:56:34,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:34,137 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:34,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-28 02:56:34,358 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:34,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1289288067, now seen corresponding path program 3 times [2020-11-28 02:56:34,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:34,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77341902] [2020-11-28 02:56:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:34,438 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:34,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77341902] [2020-11-28 02:56:34,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345780730] [2020-11-28 02:56:34,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:34,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 02:56:34,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:34,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:56:34,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 02:56:34,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:34,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2020-11-28 02:56:34,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023614876] [2020-11-28 02:56:34,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 02:56:34,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:34,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 02:56:34,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:56:34,555 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 12 states. [2020-11-28 02:56:35,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:35,282 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2020-11-28 02:56:35,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-28 02:56:35,282 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-11-28 02:56:35,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:35,283 INFO L225 Difference]: With dead ends: 143 [2020-11-28 02:56:35,283 INFO L226 Difference]: Without dead ends: 142 [2020-11-28 02:56:35,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=358, Invalid=698, Unknown=0, NotChecked=0, Total=1056 [2020-11-28 02:56:35,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-28 02:56:35,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 60. [2020-11-28 02:56:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 02:56:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-11-28 02:56:35,293 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 27 [2020-11-28 02:56:35,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:35,293 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-11-28 02:56:35,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 02:56:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-11-28 02:56:35,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-28 02:56:35,295 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:35,295 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:35,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-28 02:56:35,495 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:35,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:35,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1685598945, now seen corresponding path program 1 times [2020-11-28 02:56:35,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:35,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091077885] [2020-11-28 02:56:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 02:56:35,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091077885] [2020-11-28 02:56:35,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366486023] [2020-11-28 02:56:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:35,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:56:35,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 02:56:35,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:56:35,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-11-28 02:56:35,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990839840] [2020-11-28 02:56:35,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:35,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:35,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:35,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:56:35,723 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 6 states. [2020-11-28 02:56:35,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:35,873 INFO L93 Difference]: Finished difference Result 147 states and 172 transitions. [2020-11-28 02:56:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:35,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-11-28 02:56:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:35,874 INFO L225 Difference]: With dead ends: 147 [2020-11-28 02:56:35,874 INFO L226 Difference]: Without dead ends: 102 [2020-11-28 02:56:35,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-28 02:56:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-28 02:56:35,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 71. [2020-11-28 02:56:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-28 02:56:35,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2020-11-28 02:56:35,890 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 39 [2020-11-28 02:56:35,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:35,891 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2020-11-28 02:56:35,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:35,891 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2020-11-28 02:56:35,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-28 02:56:35,897 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:35,900 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:36,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:36,108 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:36,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:36,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1243466243, now seen corresponding path program 2 times [2020-11-28 02:56:36,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:36,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989389902] [2020-11-28 02:56:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 02:56:36,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989389902] [2020-11-28 02:56:36,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417788687] [2020-11-28 02:56:36,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:36,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:56:36,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:36,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:56:36,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 02:56:36,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:36,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-11-28 02:56:36,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179733898] [2020-11-28 02:56:36,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:56:36,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:36,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:56:36,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:56:36,347 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 10 states. [2020-11-28 02:56:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:36,617 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2020-11-28 02:56:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 02:56:36,618 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-11-28 02:56:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:36,619 INFO L225 Difference]: With dead ends: 142 [2020-11-28 02:56:36,619 INFO L226 Difference]: Without dead ends: 141 [2020-11-28 02:56:36,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2020-11-28 02:56:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-28 02:56:36,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 82. [2020-11-28 02:56:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-28 02:56:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-11-28 02:56:36,636 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 39 [2020-11-28 02:56:36,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:36,637 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-11-28 02:56:36,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:56:36,637 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-11-28 02:56:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-28 02:56:36,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:36,638 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-28 02:56:36,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:36,860 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:56:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:36,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1165798321, now seen corresponding path program 3 times [2020-11-28 02:56:36,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:36,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059397215] [2020-11-28 02:56:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 02:56:36,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059397215] [2020-11-28 02:56:36,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958500646] [2020-11-28 02:56:36,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:37,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 02:56:37,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:37,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:56:37,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-28 02:56:37,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:37,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3] total 13 [2020-11-28 02:56:37,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123357810] [2020-11-28 02:56:37,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 02:56:37,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:37,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 02:56:37,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-11-28 02:56:37,167 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 14 states. [2020-11-28 02:56:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:37,814 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2020-11-28 02:56:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-28 02:56:37,815 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-11-28 02:56:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:37,815 INFO L225 Difference]: With dead ends: 198 [2020-11-28 02:56:37,816 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:56:37,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=430, Invalid=830, Unknown=0, NotChecked=0, Total=1260 [2020-11-28 02:56:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:56:37,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:56:37,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:56:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:56:37,818 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-11-28 02:56:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:37,818 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:37,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 02:56:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:37,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:56:38,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-28 02:56:38,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:56:38,193 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2020-11-28 02:56:38,391 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 122 [2020-11-28 02:56:38,601 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 112 [2020-11-28 02:56:39,106 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 26 [2020-11-28 02:56:39,931 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2020-11-28 02:56:40,322 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 28 [2020-11-28 02:56:40,325 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-11-28 02:56:40,326 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 34) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse5 (<= ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~j~0)) (.cse6 (<= 0 ULTIMATE.start_main_~j~0)) (.cse1 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse2 (<= 0 ULTIMATE.start_main_~N~0)) (.cse3 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse4 (<= ULTIMATE.start_main_~n~0 2147483647))) (or (and .cse0 (<= ULTIMATE.start_main_~i~0 0) .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 .cse6 .cse2 .cse3 (<= ULTIMATE.start_main_~j~0 0) .cse4) (and .cse5 (<= ULTIMATE.start_main_~N~0 ULTIMATE.start_main_~i~0) .cse6 .cse1 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1)) .cse2 .cse3 .cse4))) [2020-11-28 02:56:40,326 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2020-11-28 02:56:40,326 INFO L277 CegarLoopResult]: At program point L36(lines 13 37) the Hoare annotation is: true [2020-11-28 02:56:40,326 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-28 02:56:40,326 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:56:40,326 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-11-28 02:56:40,327 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:56:40,327 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-11-28 02:56:40,327 INFO L274 CegarLoopResult]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2020-11-28 02:56:40,327 INFO L270 CegarLoopResult]: At program point L28-4(lines 28 30) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse1 (<= 0 ULTIMATE.start_main_~j~0)) (.cse2 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse3 (<= 0 ULTIMATE.start_main_~N~0)) (.cse4 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse5 (< ULTIMATE.start_main_~k~0 2147483647)) (.cse6 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse7 (<= 0 ULTIMATE.start_main_~k~0))) (or (and .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1)) .cse3 .cse4 .cse5 .cse6 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~i~0 1)) .cse7) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) [2020-11-28 02:56:40,327 INFO L274 CegarLoopResult]: For program point L28-5(lines 28 30) no Hoare annotation was computed. [2020-11-28 02:56:40,327 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-28 02:56:40,327 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-11-28 02:56:40,327 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:56:40,327 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-11-28 02:56:40,327 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-11-28 02:56:40,328 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-11-28 02:56:40,328 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 32) the Hoare annotation is: (let ((.cse4 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse1 (<= 0 ULTIMATE.start_main_~j~0)) (.cse7 (<= ULTIMATE.start_main_~i~0 2147483646)) (.cse2 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse8 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1))) (.cse3 (<= 0 ULTIMATE.start_main_~N~0)) (.cse6 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse5 (<= ULTIMATE.start_main_~j~0 0))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 0) .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse7 (<= ULTIMATE.start_main_~m~0 0) .cse3 .cse4 .cse6 .cse5) (and .cse0 .cse1 (< ULTIMATE.start_main_~i~0 2147483647) .cse2 .cse8 .cse3 (< ULTIMATE.start_main_~k~0 2147483647) .cse6 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~i~0 1)) (<= 0 ULTIMATE.start_main_~k~0)) (and (<= ULTIMATE.start_main_~N~0 ULTIMATE.start_main_~i~0) .cse1 .cse7 .cse2 .cse8 .cse3 .cse6 .cse5))) [2020-11-28 02:56:40,328 INFO L274 CegarLoopResult]: For program point L25-3(lines 25 32) no Hoare annotation was computed. [2020-11-28 02:56:40,328 INFO L274 CegarLoopResult]: For program point L21(lines 21 35) no Hoare annotation was computed. [2020-11-28 02:56:40,328 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 35) no Hoare annotation was computed. [2020-11-28 02:56:40,328 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-11-28 02:56:40,328 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-28 02:56:40,328 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-28 02:56:40,328 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2020-11-28 02:56:40,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:40 BoogieIcfgContainer [2020-11-28 02:56:40,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:40,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:40,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:40,352 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:40,352 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:29" (3/4) ... [2020-11-28 02:56:40,356 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:56:40,367 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 02:56:40,368 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 02:56:40,404 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_06f6ca92-d98c-4a86-b1f5-34141d804209/bin/uautomizer/witness.graphml [2020-11-28 02:56:40,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:40,405 INFO L168 Benchmark]: Toolchain (without parser) took 11234.15 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 69.3 MB in the beginning and 73.0 MB in the end (delta: -3.7 MB). Peak memory consumption was 70.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:40,406 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 96.5 MB. Free memory was 53.4 MB in the beginning and 53.3 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:40,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.73 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 75.7 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:40,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.16 ms. Allocated memory is still 96.5 MB. Free memory was 75.7 MB in the beginning and 74.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:40,407 INFO L168 Benchmark]: Boogie Preprocessor took 33.16 ms. Allocated memory is still 96.5 MB. Free memory was 74.3 MB in the beginning and 73.5 MB in the end (delta: 836.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:40,408 INFO L168 Benchmark]: RCFGBuilder took 346.44 ms. Allocated memory is still 96.5 MB. Free memory was 73.0 MB in the beginning and 61.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:40,408 INFO L168 Benchmark]: TraceAbstraction took 10514.21 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 61.2 MB in the beginning and 75.1 MB in the end (delta: -13.8 MB). Peak memory consumption was 88.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:40,409 INFO L168 Benchmark]: Witness Printer took 52.90 ms. Allocated memory is still 172.0 MB. Free memory was 75.1 MB in the beginning and 73.0 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:40,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 96.5 MB. Free memory was 53.4 MB in the beginning and 53.3 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 228.73 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 75.7 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.16 ms. Allocated memory is still 96.5 MB. Free memory was 75.7 MB in the beginning and 74.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.16 ms. Allocated memory is still 96.5 MB. Free memory was 74.3 MB in the beginning and 73.5 MB in the end (delta: 836.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 346.44 ms. Allocated memory is still 96.5 MB. Free memory was 73.0 MB in the beginning and 61.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10514.21 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 61.2 MB in the beginning and 75.1 MB in the end (delta: -13.8 MB). Peak memory consumption was 88.9 MB. Max. memory is 16.1 GB. * Witness Printer took 52.90 ms. Allocated memory is still 172.0 MB. Free memory was 75.1 MB in the beginning and 73.0 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((0 <= i && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && n <= 2147483647) || ((((((m <= j && 0 <= i) && 0 <= j) && 0 <= N) && N <= 2147483647) && j <= 0) && n <= 2147483647)) || (((((((m <= j && N <= i) && 0 <= j) && m <= 2147483647) && N <= k + 1) && 0 <= N) && N <= 2147483647) && n <= 2147483647) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((((((0 <= i && 0 <= j) && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && j <= 0) && n <= 2147483647) || (((((((0 <= i && 0 <= j) && i <= 2147483646) && m <= 0) && 0 <= N) && N <= 2147483647) && n <= 2147483647) && j <= 0)) || (((((((((0 <= i && 0 <= j) && i < 2147483647) && m <= 2147483647) && N <= k + 1) && 0 <= N) && k < 2147483647) && n <= 2147483647) && N <= i + 1) && 0 <= k)) || (((((((N <= i && 0 <= j) && i <= 2147483646) && m <= 2147483647) && N <= k + 1) && 0 <= N) && n <= 2147483647) && j <= 0) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((0 <= i && 0 <= j) && m <= 2147483647) && N <= k + 1) && 0 <= N) && N <= 2147483647) && k < 2147483647) && n <= 2147483647) && N <= i + 1) && 0 <= k) || ((((((((0 <= i && 0 <= j) && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && k < 2147483647) && n <= 2147483647) && 0 <= k) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.1s, OverallIterations: 21, TraceHistogramMax: 6, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 948 SDslu, 455 SDs, 0 SdLazy, 723 SolverSat, 263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 408 GetRequests, 260 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 400 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 63 NumberOfFragments, 247 HoareAnnotationTreeSize, 4 FomulaSimplifications, 507289 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 4 FomulaSimplificationsInter, 68216 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 589 NumberOfCodeBlocks, 530 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 557 ConstructedInterpolants, 0 QuantifiedInterpolants, 39851 SizeOfPredicates, 24 NumberOfNonLiveVariables, 638 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 32 InterpolantComputations, 11 PerfectInterpolantSequences, 156/478 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...