./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark51_polynomial.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_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/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 b3379b599758536e5aae0f8bd653896218533908 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:04:28,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:04:28,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:04:28,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:04:28,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:04:28,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:04:28,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:04:28,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:04:28,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:04:28,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:04:28,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:04:28,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:04:28,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:04:28,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:04:28,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:04:28,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:04:28,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:04:28,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:04:28,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:04:28,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:04:28,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:04:28,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:04:28,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:04:28,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:04:28,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:04:28,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:04:28,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:04:28,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:04:28,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:04:28,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:04:28,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:04:28,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:04:28,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:04:28,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:04:28,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:04:28,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:04:28,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:04:28,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:04:28,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:04:28,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:04:28,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:04:28,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-29 20:04:29,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:04:29,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:04:29,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:04:29,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:04:29,011 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:04:29,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:04:29,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:04:29,011 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:04:29,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:04:29,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:04:29,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:04:29,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:04:29,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:04:29,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:04:29,014 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 20:04:29,014 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:04:29,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:04:29,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:04:29,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:04:29,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:04:29,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:04:29,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:04:29,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:04:29,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:04:29,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:04:29,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:04:29,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:04:29,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:04:29,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:04:29,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:04:29,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:04:29,017 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_0f6a4e79-1551-4b01-974a-0cb610d3367e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3379b599758536e5aae0f8bd653896218533908 [2020-11-29 20:04:29,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:04:29,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:04:29,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:04:29,397 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:04:29,398 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:04:29,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i [2020-11-29 20:04:29,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/data/cdf2d0457/af2119e2db704d9fa3ee2c812a3cf3f2/FLAGf74c1528b [2020-11-29 20:04:30,019 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:04:30,020 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/sv-benchmarks/c/loop-zilu/benchmark51_polynomial.i [2020-11-29 20:04:30,032 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/data/cdf2d0457/af2119e2db704d9fa3ee2c812a3cf3f2/FLAGf74c1528b [2020-11-29 20:04:30,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/data/cdf2d0457/af2119e2db704d9fa3ee2c812a3cf3f2 [2020-11-29 20:04:30,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:04:30,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:04:30,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:04:30,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:04:30,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:04:30,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:04:30" (1/1) ... [2020-11-29 20:04:30,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef08611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30, skipping insertion in model container [2020-11-29 20:04:30,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:04:30" (1/1) ... [2020-11-29 20:04:30,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:04:30,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:04:30,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:04:30,623 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:04:30,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:04:30,652 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:04:30,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30 WrapperNode [2020-11-29 20:04:30,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:04:30,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:04:30,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:04:30,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:04:30,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30" (1/1) ... [2020-11-29 20:04:30,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30" (1/1) ... [2020-11-29 20:04:30,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:04:30,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:04:30,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:04:30,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:04:30,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30" (1/1) ... [2020-11-29 20:04:30,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30" (1/1) ... [2020-11-29 20:04:30,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30" (1/1) ... [2020-11-29 20:04:30,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30" (1/1) ... [2020-11-29 20:04:30,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30" (1/1) ... [2020-11-29 20:04:30,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30" (1/1) ... [2020-11-29 20:04:30,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30" (1/1) ... [2020-11-29 20:04:30,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:04:30,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:04:30,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:04:30,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:04:30,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:04:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:04:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:04:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:04:30,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:04:31,277 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:04:31,278 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:04:31,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:04:31 BoogieIcfgContainer [2020-11-29 20:04:31,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:04:31,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:04:31,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:04:31,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:04:31,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:04:30" (1/3) ... [2020-11-29 20:04:31,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267e3dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:04:31, skipping insertion in model container [2020-11-29 20:04:31,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:04:30" (2/3) ... [2020-11-29 20:04:31,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267e3dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:04:31, skipping insertion in model container [2020-11-29 20:04:31,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:04:31" (3/3) ... [2020-11-29 20:04:31,293 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark51_polynomial.i [2020-11-29 20:04:31,304 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:04:31,308 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 20:04:31,320 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 20:04:31,363 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:04:31,365 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:04:31,365 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:04:31,365 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:04:31,365 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:04:31,365 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:04:31,366 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:04:31,366 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:04:31,382 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-29 20:04:31,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:04:31,388 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:31,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:04:31,389 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:04:31,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:31,396 INFO L82 PathProgramCache]: Analyzing trace with hash 889575245, now seen corresponding path program 1 times [2020-11-29 20:04:31,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:31,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819853276] [2020-11-29 20:04:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:31,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819853276] [2020-11-29 20:04:31,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:04:31,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:04:31,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989484053] [2020-11-29 20:04:31,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:04:31,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:31,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:04:31,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:04:31,625 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-11-29 20:04:31,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:31,757 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-11-29 20:04:31,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:04:31,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-29 20:04:31,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:31,776 INFO L225 Difference]: With dead ends: 61 [2020-11-29 20:04:31,782 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 20:04:31,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:04:31,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 20:04:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2020-11-29 20:04:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 20:04:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-29 20:04:31,824 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 6 [2020-11-29 20:04:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:31,825 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-29 20:04:31,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:04:31,826 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-11-29 20:04:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:04:31,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:31,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:04:31,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:04:31,828 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:04:31,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:31,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1807035086, now seen corresponding path program 1 times [2020-11-29 20:04:31,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:31,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297061647] [2020-11-29 20:04:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:31,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297061647] [2020-11-29 20:04:31,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:04:31,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:04:31,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673653638] [2020-11-29 20:04:31,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:04:31,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:31,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:04:31,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:04:31,918 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2020-11-29 20:04:31,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:31,999 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-11-29 20:04:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:04:32,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 20:04:32,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:32,001 INFO L225 Difference]: With dead ends: 41 [2020-11-29 20:04:32,002 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 20:04:32,003 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 [2020-11-29 20:04:32,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 20:04:32,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-11-29 20:04:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 20:04:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-11-29 20:04:32,008 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 7 [2020-11-29 20:04:32,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:32,009 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-29 20:04:32,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:04:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-11-29 20:04:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:04:32,010 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:32,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:04:32,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:04:32,011 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:04:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:32,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1807034894, now seen corresponding path program 1 times [2020-11-29 20:04:32,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:32,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552294194] [2020-11-29 20:04:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:32,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552294194] [2020-11-29 20:04:32,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:04:32,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:04:32,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972380660] [2020-11-29 20:04:32,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:04:32,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:32,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:04:32,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:04:32,058 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 3 states. [2020-11-29 20:04:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:32,074 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2020-11-29 20:04:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:04:32,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-29 20:04:32,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:32,077 INFO L225 Difference]: With dead ends: 23 [2020-11-29 20:04:32,077 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 20:04:32,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:04:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 20:04:32,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-29 20:04:32,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 20:04:32,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-11-29 20:04:32,082 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 7 [2020-11-29 20:04:32,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:32,083 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-11-29 20:04:32,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:04:32,083 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-11-29 20:04:32,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:04:32,083 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:32,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:04:32,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:04:32,084 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:04:32,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:32,085 INFO L82 PathProgramCache]: Analyzing trace with hash 183512887, now seen corresponding path program 1 times [2020-11-29 20:04:32,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:32,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406845420] [2020-11-29 20:04:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:32,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406845420] [2020-11-29 20:04:32,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:04:32,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:04:32,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402576014] [2020-11-29 20:04:32,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:04:32,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:32,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:04:32,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:04:32,148 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2020-11-29 20:04:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:32,217 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2020-11-29 20:04:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:04:32,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 20:04:32,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:32,219 INFO L225 Difference]: With dead ends: 28 [2020-11-29 20:04:32,220 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 20:04:32,220 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 [2020-11-29 20:04:32,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 20:04:32,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-29 20:04:32,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 20:04:32,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-11-29 20:04:32,225 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 8 [2020-11-29 20:04:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:32,225 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-11-29 20:04:32,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:04:32,225 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-11-29 20:04:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:04:32,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:32,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:04:32,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:04:32,226 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:04:32,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:32,227 INFO L82 PathProgramCache]: Analyzing trace with hash 183506929, now seen corresponding path program 1 times [2020-11-29 20:04:32,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:32,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655024931] [2020-11-29 20:04:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:32,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655024931] [2020-11-29 20:04:32,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:04:32,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:04:32,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102162732] [2020-11-29 20:04:32,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:04:32,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:32,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:04:32,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:04:32,294 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 4 states. [2020-11-29 20:04:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:32,340 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2020-11-29 20:04:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:04:32,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 20:04:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:32,342 INFO L225 Difference]: With dead ends: 33 [2020-11-29 20:04:32,343 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 20:04:32,343 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 [2020-11-29 20:04:32,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 20:04:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2020-11-29 20:04:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 20:04:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-11-29 20:04:32,348 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 8 [2020-11-29 20:04:32,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:32,349 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-11-29 20:04:32,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:04:32,349 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-11-29 20:04:32,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:04:32,349 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:32,350 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:04:32,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:04:32,357 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:04:32,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:32,358 INFO L82 PathProgramCache]: Analyzing trace with hash -638400193, now seen corresponding path program 1 times [2020-11-29 20:04:32,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:32,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131308357] [2020-11-29 20:04:32,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:32,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131308357] [2020-11-29 20:04:32,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:04:32,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:04:32,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036743278] [2020-11-29 20:04:32,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:04:32,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:32,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:04:32,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:04:32,422 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 4 states. [2020-11-29 20:04:32,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:32,468 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2020-11-29 20:04:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:04:32,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 20:04:32,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:32,469 INFO L225 Difference]: With dead ends: 40 [2020-11-29 20:04:32,469 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 20:04:32,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:04:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 20:04:32,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2020-11-29 20:04:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 20:04:32,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-29 20:04:32,473 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2020-11-29 20:04:32,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:32,474 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-29 20:04:32,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:04:32,474 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-29 20:04:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:04:32,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:32,475 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 20:04:32,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:04:32,476 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:04:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:32,476 INFO L82 PathProgramCache]: Analyzing trace with hash -548277981, now seen corresponding path program 1 times [2020-11-29 20:04:32,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:32,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335548389] [2020-11-29 20:04:32,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:32,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335548389] [2020-11-29 20:04:32,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016263802] [2020-11-29 20:04:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:04:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:32,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:04:32,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:04:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:32,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:04:32,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-29 20:04:32,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95354917] [2020-11-29 20:04:32,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:04:32,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:32,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:04:32,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:04:32,671 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-11-29 20:04:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:32,734 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-29 20:04:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:04:32,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-29 20:04:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:32,736 INFO L225 Difference]: With dead ends: 22 [2020-11-29 20:04:32,736 INFO L226 Difference]: Without dead ends: 21 [2020-11-29 20:04:32,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:04:32,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-29 20:04:32,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-29 20:04:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 20:04:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-11-29 20:04:32,740 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2020-11-29 20:04:32,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:32,740 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-11-29 20:04:32,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:04:32,740 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-11-29 20:04:32,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:04:32,741 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:04:32,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:04:32,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 20:04:32,958 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:04:32,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:04:32,959 INFO L82 PathProgramCache]: Analyzing trace with hash 677932201, now seen corresponding path program 1 times [2020-11-29 20:04:32,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:04:32,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230908318] [2020-11-29 20:04:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:04:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:04:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:04:33,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230908318] [2020-11-29 20:04:33,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:04:33,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:04:33,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435158170] [2020-11-29 20:04:33,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:04:33,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:04:33,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:04:33,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:04:33,038 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 6 states. [2020-11-29 20:04:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:04:33,110 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-11-29 20:04:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:04:33,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-29 20:04:33,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:04:33,112 INFO L225 Difference]: With dead ends: 31 [2020-11-29 20:04:33,113 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:04:33,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:04:33,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:04:33,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:04:33,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:04:33,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:04:33,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-29 20:04:33,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:04:33,114 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:04:33,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:04:33,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:04:33,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:04:33,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 20:04:33,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:04:33,146 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-29 20:04:33,147 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-29 20:04:33,147 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-11-29 20:04:33,147 INFO L274 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-11-29 20:04:33,147 INFO L274 CegarLoopResult]: For program point L23-4(lines 22 26) no Hoare annotation was computed. [2020-11-29 20:04:33,147 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-29 20:04:33,147 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-29 20:04:33,147 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:04:33,148 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-29 20:04:33,148 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:04:33,148 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 20:04:33,148 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:04:33,148 INFO L277 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: true [2020-11-29 20:04:33,159 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-29 20:04:33,159 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-11-29 20:04:33,159 INFO L270 CegarLoopResult]: At program point L24-3(lines 22 26) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 50) (<= 0 ULTIMATE.start_main_~x~0)) [2020-11-29 20:04:33,159 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-29 20:04:33,159 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:04:33,159 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 20:04:33,160 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-29 20:04:33,160 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-29 20:04:33,160 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-29 20:04:33,160 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-29 20:04:33,160 INFO L274 CegarLoopResult]: For program point L22-2(lines 22 26) no Hoare annotation was computed. [2020-11-29 20:04:33,160 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-29 20:04:33,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:04:33 BoogieIcfgContainer [2020-11-29 20:04:33,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:04:33,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:04:33,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:04:33,175 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:04:33,175 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:04:31" (3/4) ... [2020-11-29 20:04:33,177 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:04:33,186 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 20:04:33,187 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:04:33,187 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:04:33,187 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:04:33,226 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0f6a4e79-1551-4b01-974a-0cb610d3367e/bin/uautomizer/witness.graphml [2020-11-29 20:04:33,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:04:33,228 INFO L168 Benchmark]: Toolchain (without parser) took 2819.77 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 62.2 MB in the beginning and 91.9 MB in the end (delta: -29.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:04:33,229 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:04:33,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.80 ms. Allocated memory is still 92.3 MB. Free memory was 62.2 MB in the beginning and 69.4 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:04:33,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.49 ms. Allocated memory is still 92.3 MB. Free memory was 69.4 MB in the beginning and 67.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:04:33,230 INFO L168 Benchmark]: Boogie Preprocessor took 19.13 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 67.1 MB in the end (delta: 768.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:04:33,231 INFO L168 Benchmark]: RCFGBuilder took 574.41 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 54.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:04:33,232 INFO L168 Benchmark]: TraceAbstraction took 1893.03 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 54.2 MB in the beginning and 93.9 MB in the end (delta: -39.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:04:33,232 INFO L168 Benchmark]: Witness Printer took 51.99 ms. Allocated memory is still 117.4 MB. Free memory was 93.9 MB in the beginning and 91.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:04:33,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 92.3 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 244.80 ms. Allocated memory is still 92.3 MB. Free memory was 62.2 MB in the beginning and 69.4 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.49 ms. Allocated memory is still 92.3 MB. Free memory was 69.4 MB in the beginning and 67.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.13 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 67.1 MB in the end (delta: 768.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 574.41 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 54.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1893.03 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 54.2 MB in the beginning and 93.9 MB in the end (delta: -39.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. * Witness Printer took 51.99 ms. Allocated memory is still 117.4 MB. Free memory was 93.9 MB in the beginning and 91.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: 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: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: x <= 50 && 0 <= x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 109 SDtfs, 60 SDslu, 124 SDs, 0 SdLazy, 145 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, 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, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 23 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 1987 SizeOfPredicates, 2 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 5/15 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...