./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark37_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_98fe7cd0-e0d5-4983-8eda-d2c330db8170/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/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 8a833a1b9e7471f6481f3d298fb7b827e4068305 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:00:39,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:00:39,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:00:39,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:00:39,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:00:39,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:00:39,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:00:39,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:00:39,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:00:39,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:00:39,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:00:39,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:00:39,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:00:39,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:00:39,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:00:39,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:00:39,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:00:39,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:00:39,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:00:39,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:00:39,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:00:39,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:00:39,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:00:39,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:00:39,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:00:39,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:00:39,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:00:39,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:00:39,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:00:39,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:00:39,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:00:39,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:00:39,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:00:39,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:00:39,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:00:39,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:00:39,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:00:39,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:00:39,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:00:39,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:00:39,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:00:39,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-29 20:00:39,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:00:39,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:00:39,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:00:39,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:00:39,535 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:00:39,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:00:39,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:00:39,536 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:00:39,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:00:39,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:00:39,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:00:39,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:00:39,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:00:39,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:00:39,538 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 20:00:39,539 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:00:39,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:00:39,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:00:39,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:00:39,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:00:39,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:00:39,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:00:39,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:00:39,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:00:39,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:00:39,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:00:39,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:00:39,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:00:39,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:00:39,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:00:39,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:00:39,542 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_98fe7cd0-e0d5-4983-8eda-d2c330db8170/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a833a1b9e7471f6481f3d298fb7b827e4068305 [2020-11-29 20:00:39,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:00:39,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:00:39,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:00:39,864 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:00:39,865 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:00:39,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i [2020-11-29 20:00:39,931 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/bin/uautomizer/data/9a5964e3e/20716db749ef4dadb24065769e2cc055/FLAG568881931 [2020-11-29 20:00:40,427 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:00:40,427 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i [2020-11-29 20:00:40,438 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/bin/uautomizer/data/9a5964e3e/20716db749ef4dadb24065769e2cc055/FLAG568881931 [2020-11-29 20:00:40,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/bin/uautomizer/data/9a5964e3e/20716db749ef4dadb24065769e2cc055 [2020-11-29 20:00:40,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:00:40,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:00:40,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:00:40,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:00:40,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:00:40,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:00:40" (1/1) ... [2020-11-29 20:00:40,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df134aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:40, skipping insertion in model container [2020-11-29 20:00:40,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:00:40" (1/1) ... [2020-11-29 20:00:40,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:00:40,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:00:41,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:00:41,092 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:00:41,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:00:41,120 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:00:41,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41 WrapperNode [2020-11-29 20:00:41,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:00:41,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:00:41,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:00:41,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:00:41,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:00:41,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:00:41,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:00:41,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:00:41,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:00:41,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:00:41,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:00:41,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:00:41,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/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 20:00:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:00:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:00:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:00:41,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:00:41,604 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:00:41,605 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:00:41,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:00:41 BoogieIcfgContainer [2020-11-29 20:00:41,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:00:41,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:00:41,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:00:41,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:00:41,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:00:40" (1/3) ... [2020-11-29 20:00:41,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665b511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:00:41, skipping insertion in model container [2020-11-29 20:00:41,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (2/3) ... [2020-11-29 20:00:41,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665b511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:00:41, skipping insertion in model container [2020-11-29 20:00:41,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:00:41" (3/3) ... [2020-11-29 20:00:41,619 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark37_conjunctive.i [2020-11-29 20:00:41,630 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:00:41,634 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 20:00:41,646 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 20:00:41,684 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:00:41,684 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:00:41,685 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:00:41,685 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:00:41,685 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:00:41,685 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:00:41,685 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:00:41,686 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:00:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 20:00:41,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 20:00:41,707 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:41,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 20:00:41,708 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:00:41,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:41,715 INFO L82 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2020-11-29 20:00:41,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:41,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207403504] [2020-11-29 20:00:41,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:41,945 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 20:00:41,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207403504] [2020-11-29 20:00:41,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:00:41,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:00:41,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6484968] [2020-11-29 20:00:41,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:00:41,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:41,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:00:41,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:00:41,972 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2020-11-29 20:00:42,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:42,134 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-11-29 20:00:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:00:42,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-29 20:00:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:42,153 INFO L225 Difference]: With dead ends: 41 [2020-11-29 20:00:42,155 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 20:00:42,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:00:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 20:00:42,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 11. [2020-11-29 20:00:42,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 20:00:42,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 20:00:42,186 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 5 [2020-11-29 20:00:42,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:42,187 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 20:00:42,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:00:42,187 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 20:00:42,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:00:42,188 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:42,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:00:42,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:00:42,189 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:00:42,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:42,190 INFO L82 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2020-11-29 20:00:42,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:42,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890514174] [2020-11-29 20:00:42,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:42,264 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 20:00:42,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890514174] [2020-11-29 20:00:42,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:00:42,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:00:42,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665799424] [2020-11-29 20:00:42,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:00:42,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:42,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:00:42,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:00:42,268 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2020-11-29 20:00:42,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:42,315 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-29 20:00:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:00:42,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-29 20:00:42,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:42,317 INFO L225 Difference]: With dead ends: 11 [2020-11-29 20:00:42,317 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 20:00:42,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:00:42,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 20:00:42,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 20:00:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 20:00:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-29 20:00:42,320 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2020-11-29 20:00:42,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:42,321 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-29 20:00:42,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:00:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-29 20:00:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:00:42,321 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:42,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:00:42,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:00:42,322 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:00:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:42,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2020-11-29 20:00:42,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:42,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564684999] [2020-11-29 20:00:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:42,397 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 20:00:42,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564684999] [2020-11-29 20:00:42,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:00:42,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:00:42,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874815579] [2020-11-29 20:00:42,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:00:42,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:42,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:00:42,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:00:42,399 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2020-11-29 20:00:42,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:42,425 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-29 20:00:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:00:42,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 20:00:42,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:42,426 INFO L225 Difference]: With dead ends: 10 [2020-11-29 20:00:42,426 INFO L226 Difference]: Without dead ends: 9 [2020-11-29 20:00:42,427 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 20:00:42,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-29 20:00:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-29 20:00:42,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 20:00:42,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-29 20:00:42,430 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-11-29 20:00:42,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:42,430 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-29 20:00:42,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:00:42,430 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-29 20:00:42,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:00:42,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:42,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:00:42,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:00:42,431 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:00:42,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:42,432 INFO L82 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2020-11-29 20:00:42,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:42,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000767601] [2020-11-29 20:00:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:42,474 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 20:00:42,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000767601] [2020-11-29 20:00:42,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:00:42,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:00:42,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706121934] [2020-11-29 20:00:42,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:00:42,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:42,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:00:42,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:00:42,477 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2020-11-29 20:00:42,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:42,574 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-29 20:00:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:00:42,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-29 20:00:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:42,576 INFO L225 Difference]: With dead ends: 15 [2020-11-29 20:00:42,576 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 20:00:42,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:00:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 20:00:42,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 20:00:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 20:00:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-29 20:00:42,580 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2020-11-29 20:00:42,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:42,581 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-29 20:00:42,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:00:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-29 20:00:42,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:00:42,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:42,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 20:00:42,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:00:42,582 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:00:42,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:42,583 INFO L82 PathProgramCache]: Analyzing trace with hash -2010663901, now seen corresponding path program 1 times [2020-11-29 20:00:42,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:42,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205400501] [2020-11-29 20:00:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:42,669 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 20:00:42,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205400501] [2020-11-29 20:00:42,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441053850] [2020-11-29 20:00:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/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 20:00:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:42,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:00:42,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:00:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:00:42,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:00:42,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-11-29 20:00:42,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855441131] [2020-11-29 20:00:42,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:00:42,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:42,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:00:42,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:00:42,821 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 9 states. [2020-11-29 20:00:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:42,928 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-29 20:00:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:00:42,928 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-11-29 20:00:42,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:42,929 INFO L225 Difference]: With dead ends: 14 [2020-11-29 20:00:42,929 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:00:42,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:00:42,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:00:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:00:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:00:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:00:42,930 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-29 20:00:42,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:42,931 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:00:42,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:00:42,931 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:00:42,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:00:43,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:00:43,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:00:43,186 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-29 20:00:43,186 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:00:43,186 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 20:00:43,186 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-29 20:00:43,186 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-29 20:00:43,187 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 26) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-11-29 20:00:43,187 INFO L274 CegarLoopResult]: For program point L23-3(lines 23 26) no Hoare annotation was computed. [2020-11-29 20:00:43,187 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-29 20:00:43,187 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-29 20:00:43,187 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:00:43,187 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-29 20:00:43,187 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-29 20:00:43,187 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:00:43,187 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:00:43,188 INFO L270 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-29 20:00:43,188 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-29 20:00:43,188 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-11-29 20:00:43,188 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-29 20:00:43,188 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-29 20:00:43,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:00:43 BoogieIcfgContainer [2020-11-29 20:00:43,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:00:43,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:00:43,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:00:43,216 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:00:43,216 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:00:41" (3/4) ... [2020-11-29 20:00:43,220 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:00:43,231 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 20:00:43,231 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:00:43,232 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:00:43,233 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:00:43,273 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_98fe7cd0-e0d5-4983-8eda-d2c330db8170/bin/uautomizer/witness.graphml [2020-11-29 20:00:43,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:00:43,274 INFO L168 Benchmark]: Toolchain (without parser) took 2458.50 ms. Allocated memory is still 142.6 MB. Free memory was 115.1 MB in the beginning and 71.8 MB in the end (delta: 43.3 MB). Peak memory consumption was 40.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:43,275 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory was 41.0 MB in the beginning and 40.9 MB in the end (delta: 41.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:00:43,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.57 ms. Allocated memory is still 142.6 MB. Free memory was 115.1 MB in the beginning and 120.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:43,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.45 ms. Allocated memory is still 142.6 MB. Free memory was 120.5 MB in the beginning and 119.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:43,276 INFO L168 Benchmark]: Boogie Preprocessor took 19.93 ms. Allocated memory is still 142.6 MB. Free memory was 119.2 MB in the beginning and 118.4 MB in the end (delta: 793.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:00:43,277 INFO L168 Benchmark]: RCFGBuilder took 434.50 ms. Allocated memory is still 142.6 MB. Free memory was 118.0 MB in the beginning and 106.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:43,278 INFO L168 Benchmark]: TraceAbstraction took 1603.66 ms. Allocated memory is still 142.6 MB. Free memory was 105.8 MB in the beginning and 73.9 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:43,278 INFO L168 Benchmark]: Witness Printer took 57.47 ms. Allocated memory is still 142.6 MB. Free memory was 73.9 MB in the beginning and 71.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:43,281 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory was 41.0 MB in the beginning and 40.9 MB in the end (delta: 41.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.57 ms. Allocated memory is still 142.6 MB. Free memory was 115.1 MB in the beginning and 120.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.45 ms. Allocated memory is still 142.6 MB. Free memory was 120.5 MB in the beginning and 119.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.93 ms. Allocated memory is still 142.6 MB. Free memory was 119.2 MB in the beginning and 118.4 MB in the end (delta: 793.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 434.50 ms. Allocated memory is still 142.6 MB. Free memory was 118.0 MB in the beginning and 106.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1603.66 ms. Allocated memory is still 142.6 MB. Free memory was 105.8 MB in the beginning and 73.9 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. * Witness Printer took 57.47 ms. Allocated memory is still 142.6 MB. Free memory was 73.9 MB in the beginning and 71.8 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: 25]: 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: 25]: 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (x <= y && 0 <= y) && y <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 60 SDslu, 48 SDs, 0 SdLazy, 76 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s 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, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 16 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, 1116 SizeOfPredicates, 4 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 1/10 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...