./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/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 32bit --witnessprinter.graph.data.programhash b3778a0dc06b06dbf04163d9b170743f1501fb85 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:01:07,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:01:07,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:01:07,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:01:07,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:01:07,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:01:07,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:01:07,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:01:07,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:01:07,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:01:07,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:01:07,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:01:07,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:01:07,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:01:07,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:01:08,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:01:08,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:01:08,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:01:08,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:01:08,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:01:08,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:01:08,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:01:08,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:01:08,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:01:08,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:01:08,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:01:08,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:01:08,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:01:08,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:01:08,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:01:08,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:01:08,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:01:08,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:01:08,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:01:08,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:01:08,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:01:08,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:01:08,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:01:08,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:01:08,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:01:08,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:01:08,031 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-28 03:01:08,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:01:08,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:01:08,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:01:08,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:01:08,056 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:01:08,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:01:08,057 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:01:08,057 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:01:08,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:01:08,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:01:08,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:01:08,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:01:08,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:01:08,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:01:08,059 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:01:08,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:01:08,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:01:08,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:01:08,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:01:08,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:01:08,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:01:08,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:01:08,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:01:08,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:01:08,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:01:08,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:01:08,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:01:08,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:01:08,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:01:08,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:01:08,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:01:08,062 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_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3778a0dc06b06dbf04163d9b170743f1501fb85 [2020-11-28 03:01:08,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:01:08,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:01:08,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:01:08,325 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:01:08,326 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:01:08,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2020-11-28 03:01:08,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/bin/uautomizer/data/2c6177879/641d159a48084f5a899e12b98fd5e8b3/FLAG5be71dab6 [2020-11-28 03:01:08,895 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:01:08,895 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2020-11-28 03:01:08,907 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/bin/uautomizer/data/2c6177879/641d159a48084f5a899e12b98fd5e8b3/FLAG5be71dab6 [2020-11-28 03:01:09,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/bin/uautomizer/data/2c6177879/641d159a48084f5a899e12b98fd5e8b3 [2020-11-28 03:01:09,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:01:09,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:01:09,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:09,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:01:09,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:01:09,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:09" (1/1) ... [2020-11-28 03:01:09,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d7a5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09, skipping insertion in model container [2020-11-28 03:01:09,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:09" (1/1) ... [2020-11-28 03:01:09,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:01:09,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:01:09,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:09,506 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:01:09,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:09,551 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:01:09,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09 WrapperNode [2020-11-28 03:01:09,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:09,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:09,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:01:09,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:01:09,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09" (1/1) ... [2020-11-28 03:01:09,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09" (1/1) ... [2020-11-28 03:01:09,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:09,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:01:09,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:01:09,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:01:09,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09" (1/1) ... [2020-11-28 03:01:09,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09" (1/1) ... [2020-11-28 03:01:09,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09" (1/1) ... [2020-11-28 03:01:09,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09" (1/1) ... [2020-11-28 03:01:09,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09" (1/1) ... [2020-11-28 03:01:09,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09" (1/1) ... [2020-11-28 03:01:09,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09" (1/1) ... [2020-11-28 03:01:09,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:01:09,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:01:09,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:01:09,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:01:09,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/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 03:01:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:01:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:01:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:01:09,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:01:10,127 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:01:10,127 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:01:10,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:10 BoogieIcfgContainer [2020-11-28 03:01:10,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:01:10,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:01:10,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:01:10,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:01:10,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:01:09" (1/3) ... [2020-11-28 03:01:10,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c45216c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:01:10, skipping insertion in model container [2020-11-28 03:01:10,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:09" (2/3) ... [2020-11-28 03:01:10,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c45216c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:01:10, skipping insertion in model container [2020-11-28 03:01:10,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:10" (3/3) ... [2020-11-28 03:01:10,140 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark19_conjunctive.i [2020-11-28 03:01:10,150 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:01:10,153 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 03:01:10,161 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:01:10,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:01:10,186 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:01:10,187 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:01:10,187 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:01:10,187 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:01:10,187 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:01:10,188 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:01:10,188 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:01:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-28 03:01:10,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 03:01:10,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:10,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 03:01:10,208 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:10,214 INFO L82 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2020-11-28 03:01:10,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:10,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151976100] [2020-11-28 03:01:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:10,447 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 03:01:10,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151976100] [2020-11-28 03:01:10,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:01:10,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:01:10,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334792062] [2020-11-28 03:01:10,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:01:10,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:10,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:01:10,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:01:10,473 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2020-11-28 03:01:10,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:10,560 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-11-28 03:01:10,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:01:10,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 03:01:10,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:10,580 INFO L225 Difference]: With dead ends: 26 [2020-11-28 03:01:10,580 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 03:01:10,583 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 03:01:10,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 03:01:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 03:01:10,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 03:01:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-28 03:01:10,615 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 5 [2020-11-28 03:01:10,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:10,615 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-28 03:01:10,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:01:10,616 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-28 03:01:10,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:01:10,616 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:10,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:01:10,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:01:10,617 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:10,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:10,621 INFO L82 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2020-11-28 03:01:10,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:10,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938462629] [2020-11-28 03:01:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:10,716 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 03:01:10,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938462629] [2020-11-28 03:01:10,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:01:10,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:01:10,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918385890] [2020-11-28 03:01:10,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:01:10,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:10,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:01:10,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:01:10,720 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2020-11-28 03:01:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:10,762 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-11-28 03:01:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:01:10,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 03:01:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:10,763 INFO L225 Difference]: With dead ends: 12 [2020-11-28 03:01:10,763 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 03:01:10,764 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 03:01:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 03:01:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-11-28 03:01:10,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 03:01:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-28 03:01:10,775 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2020-11-28 03:01:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:10,776 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-28 03:01:10,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:01:10,776 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-28 03:01:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:01:10,776 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:10,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:10,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:01:10,777 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:10,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:10,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2020-11-28 03:01:10,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:10,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972022647] [2020-11-28 03:01:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:10,868 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 03:01:10,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972022647] [2020-11-28 03:01:10,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:01:10,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:01:10,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336414432] [2020-11-28 03:01:10,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:01:10,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:10,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:01:10,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:01:10,871 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2020-11-28 03:01:10,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:10,920 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-28 03:01:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:01:10,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-28 03:01:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:10,921 INFO L225 Difference]: With dead ends: 13 [2020-11-28 03:01:10,921 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 03:01:10,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:01:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 03:01:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 9. [2020-11-28 03:01:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:01:10,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 03:01:10,924 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-11-28 03:01:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:10,925 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 03:01:10,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:01:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 03:01:10,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:01:10,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:10,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:10,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:01:10,926 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:10,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:10,927 INFO L82 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2020-11-28 03:01:10,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:10,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588705849] [2020-11-28 03:01:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:10,967 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 03:01:10,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588705849] [2020-11-28 03:01:10,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:01:10,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:01:10,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590650482] [2020-11-28 03:01:10,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:01:10,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:10,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:01:10,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:01:10,969 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-28 03:01:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:11,012 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-28 03:01:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:01:11,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:01:11,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:11,014 INFO L225 Difference]: With dead ends: 15 [2020-11-28 03:01:11,014 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 03:01:11,015 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 03:01:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 03:01:11,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-28 03:01:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 03:01:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-28 03:01:11,018 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2020-11-28 03:01:11,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:11,019 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-28 03:01:11,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:01:11,019 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-28 03:01:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:01:11,020 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:11,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-28 03:01:11,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:01:11,020 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:11,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:11,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2010663901, now seen corresponding path program 1 times [2020-11-28 03:01:11,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:11,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094426185] [2020-11-28 03:01:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:01:11,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094426185] [2020-11-28 03:01:11,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141243327] [2020-11-28 03:01:11,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/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 03:01:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:11,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:01:11,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:01:11,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:11,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-28 03:01:11,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37053592] [2020-11-28 03:01:11,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:01:11,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:11,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:01:11,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:01:11,231 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2020-11-28 03:01:11,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:11,312 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-28 03:01:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:01:11,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-28 03:01:11,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:11,314 INFO L225 Difference]: With dead ends: 14 [2020-11-28 03:01:11,314 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:01:11,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:01:11,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:01:11,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:01:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:01:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:01:11,316 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-28 03:01:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:11,316 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:01:11,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:01:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:01:11,316 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:01:11,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:11,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:01:11,567 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 03:01:11,567 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:01:11,567 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 03:01:11,568 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-28 03:01:11,568 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-28 03:01:11,568 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-28 03:01:11,568 INFO L274 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-11-28 03:01:11,568 INFO L274 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-11-28 03:01:11,568 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-28 03:01:11,568 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-28 03:01:11,568 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:01:11,568 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 03:01:11,569 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 03:01:11,569 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:01:11,569 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:01:11,569 INFO L270 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: (<= ULTIMATE.start_main_~j~0 2147483647) [2020-11-28 03:01:11,569 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 2147483647)) [2020-11-28 03:01:11,569 INFO L274 CegarLoopResult]: For program point L24-3(lines 24 26) no Hoare annotation was computed. [2020-11-28 03:01:11,569 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-28 03:01:11,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:01:11 BoogieIcfgContainer [2020-11-28 03:01:11,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:01:11,584 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:01:11,585 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:01:11,585 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:01:11,585 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:10" (3/4) ... [2020-11-28 03:01:11,588 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:01:11,606 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:01:11,606 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:01:11,606 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:01:11,606 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:01:11,644 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e41b62b4-87c4-4b46-8bc5-56f9bb3f8b4b/bin/uautomizer/witness.graphml [2020-11-28 03:01:11,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:01:11,645 INFO L168 Benchmark]: Toolchain (without parser) took 2381.92 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 61.9 MB in the beginning and 87.4 MB in the end (delta: -25.5 MB). Peak memory consumption was 43.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:11,646 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory was 47.7 MB in the beginning and 47.6 MB in the end (delta: 52.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:11,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.98 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 61.6 MB in the beginning and 88.2 MB in the end (delta: -26.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:11,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.67 ms. Allocated memory is still 111.1 MB. Free memory was 88.2 MB in the beginning and 86.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:11,648 INFO L168 Benchmark]: Boogie Preprocessor took 43.53 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 85.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:11,648 INFO L168 Benchmark]: RCFGBuilder took 486.16 ms. Allocated memory is still 111.1 MB. Free memory was 85.5 MB in the beginning and 74.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:11,649 INFO L168 Benchmark]: TraceAbstraction took 1453.22 ms. Allocated memory is still 111.1 MB. Free memory was 73.5 MB in the beginning and 43.4 MB in the end (delta: 30.1 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:11,649 INFO L168 Benchmark]: Witness Printer took 59.53 ms. Allocated memory is still 111.1 MB. Free memory was 43.4 MB in the beginning and 87.4 MB in the end (delta: -44.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:11,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory was 47.7 MB in the beginning and 47.6 MB in the end (delta: 52.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.98 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 61.6 MB in the beginning and 88.2 MB in the end (delta: -26.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.67 ms. Allocated memory is still 111.1 MB. Free memory was 88.2 MB in the beginning and 86.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.53 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 85.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 486.16 ms. Allocated memory is still 111.1 MB. Free memory was 85.5 MB in the beginning and 74.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1453.22 ms. Allocated memory is still 111.1 MB. Free memory was 73.5 MB in the beginning and 43.4 MB in the end (delta: 30.1 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * Witness Printer took 59.53 ms. Allocated memory is still 111.1 MB. Free memory was 43.4 MB in the beginning and 87.4 MB in the end (delta: -44.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: j <= k && k <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: j <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 34 SDslu, 43 SDs, 0 SdLazy, 67 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 70 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1174 SizeOfPredicates, 5 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 2/10 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...