./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 775ea6e0a1296fd7b29dfc5da5a4c77d3361f4a8 ...................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:55:31,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:55:31,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:55:31,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:55:31,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:55:31,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:55:31,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:55:31,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:55:31,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:55:31,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:55:31,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:55:31,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:55:31,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:55:31,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:55:31,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:55:31,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:55:31,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:55:31,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:55:31,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:55:31,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:55:31,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:55:31,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:55:31,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:55:31,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:55:31,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:55:31,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:55:31,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:55:31,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:55:31,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:55:31,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:55:31,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:55:31,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:55:31,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:55:31,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:55:31,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:55:31,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:55:31,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:55:31,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:55:31,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:55:31,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:55:31,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:55:31,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 07:55:31,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:55:31,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:55:31,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:55:31,497 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:55:31,497 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:55:31,497 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:55:31,497 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:55:31,497 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:55:31,497 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:55:31,497 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:55:31,497 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:55:31,497 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:55:31,498 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:55:31,498 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:55:31,498 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:55:31,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:55:31,498 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 07:55:31,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:55:31,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:55:31,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:55:31,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:55:31,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:55:31,499 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 07:55:31,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:55:31,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:55:31,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:55:31,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:55:31,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:55:31,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:55:31,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:55:31,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:55:31,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:55:31,500 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:55:31,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:55:31,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:55:31,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:55:31,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:55:31,500 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 775ea6e0a1296fd7b29dfc5da5a4c77d3361f4a8 [2020-12-09 07:55:31,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:55:31,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:55:31,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:55:31,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:55:31,700 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:55:31,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c [2020-12-09 07:55:31,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/data/bcac70976/8e55afc3cf774bcb9fef24458ca571d8/FLAG3fac84a4c [2020-12-09 07:55:32,100 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:55:32,100 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2.c [2020-12-09 07:55:32,105 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/data/bcac70976/8e55afc3cf774bcb9fef24458ca571d8/FLAG3fac84a4c [2020-12-09 07:55:32,118 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/data/bcac70976/8e55afc3cf774bcb9fef24458ca571d8 [2020-12-09 07:55:32,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:55:32,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:55:32,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:55:32,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:55:32,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:55:32,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:55:32" (1/1) ... [2020-12-09 07:55:32,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e9ece9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32, skipping insertion in model container [2020-12-09 07:55:32,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:55:32" (1/1) ... [2020-12-09 07:55:32,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:55:32,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:55:32,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:55:32,228 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:55:32,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:55:32,245 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:55:32,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32 WrapperNode [2020-12-09 07:55:32,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:55:32,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:55:32,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:55:32,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:55:32,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32" (1/1) ... [2020-12-09 07:55:32,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32" (1/1) ... [2020-12-09 07:55:32,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:55:32,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:55:32,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:55:32,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:55:32,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32" (1/1) ... [2020-12-09 07:55:32,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32" (1/1) ... [2020-12-09 07:55:32,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32" (1/1) ... [2020-12-09 07:55:32,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32" (1/1) ... [2020-12-09 07:55:32,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32" (1/1) ... [2020-12-09 07:55:32,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32" (1/1) ... [2020-12-09 07:55:32,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32" (1/1) ... [2020-12-09 07:55:32,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:55:32,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:55:32,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:55:32,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:55:32,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/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 [2020-12-09 07:55:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:55:32,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:55:32,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:55:32,469 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-09 07:55:32,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:55:32 BoogieIcfgContainer [2020-12-09 07:55:32,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:55:32,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:55:32,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:55:32,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:55:32,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:55:32" (1/3) ... [2020-12-09 07:55:32,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d6fb9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:55:32, skipping insertion in model container [2020-12-09 07:55:32,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:55:32" (2/3) ... [2020-12-09 07:55:32,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d6fb9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:55:32, skipping insertion in model container [2020-12-09 07:55:32,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:55:32" (3/3) ... [2020-12-09 07:55:32,479 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-while2.c [2020-12-09 07:55:32,492 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:55:32,495 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 07:55:32,505 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 07:55:32,527 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:55:32,528 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:55:32,528 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:55:32,528 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:55:32,528 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:55:32,528 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:55:32,528 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:55:32,528 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:55:32,541 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-09 07:55:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 07:55:32,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:55:32,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 07:55:32,558 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:55:32,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:55:32,563 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-12-09 07:55:32,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:55:32,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172365039] [2020-12-09 07:55:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:55:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:55:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:55:32,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172365039] [2020-12-09 07:55:32,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:55:32,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:55:32,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283739439] [2020-12-09 07:55:32,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:55:32,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:55:32,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:55:32,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:55:32,706 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-12-09 07:55:32,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:55:32,747 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-12-09 07:55:32,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:55:32,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 07:55:32,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:55:32,756 INFO L225 Difference]: With dead ends: 14 [2020-12-09 07:55:32,757 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 07:55:32,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:55:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 07:55:32,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-12-09 07:55:32,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 07:55:32,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-09 07:55:32,788 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2020-12-09 07:55:32,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:55:32,789 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-09 07:55:32,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:55:32,789 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-09 07:55:32,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 07:55:32,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:55:32,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 07:55:32,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:55:32,790 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:55:32,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:55:32,791 INFO L82 PathProgramCache]: Analyzing trace with hash 964251, now seen corresponding path program 1 times [2020-12-09 07:55:32,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:55:32,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375726180] [2020-12-09 07:55:32,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:55:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:55:32,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:55:32,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375726180] [2020-12-09 07:55:32,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:55:32,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 07:55:32,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681911558] [2020-12-09 07:55:32,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:55:32,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:55:32,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:55:32,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:55:32,816 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2020-12-09 07:55:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:55:32,825 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-12-09 07:55:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:55:32,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 07:55:32,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:55:32,826 INFO L225 Difference]: With dead ends: 10 [2020-12-09 07:55:32,827 INFO L226 Difference]: Without dead ends: 9 [2020-12-09 07:55:32,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:55:32,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-09 07:55:32,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-09 07:55:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 07:55:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-09 07:55:32,831 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2020-12-09 07:55:32,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:55:32,831 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-09 07:55:32,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:55:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-09 07:55:32,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:55:32,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:55:32,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:55:32,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:55:32,832 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:55:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:55:32,833 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-12-09 07:55:32,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:55:32,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643995881] [2020-12-09 07:55:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:55:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:55:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:55:32,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643995881] [2020-12-09 07:55:32,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:55:32,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:55:32,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094867844] [2020-12-09 07:55:32,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:55:32,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:55:32,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:55:32,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:55:32,854 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2020-12-09 07:55:32,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:55:32,864 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-12-09 07:55:32,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:55:32,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 07:55:32,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:55:32,865 INFO L225 Difference]: With dead ends: 9 [2020-12-09 07:55:32,865 INFO L226 Difference]: Without dead ends: 8 [2020-12-09 07:55:32,866 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 [2020-12-09 07:55:32,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-09 07:55:32,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-09 07:55:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 07:55:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2020-12-09 07:55:32,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2020-12-09 07:55:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:55:32,869 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-12-09 07:55:32,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:55:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2020-12-09 07:55:32,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:55:32,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:55:32,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:55:32,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 07:55:32,870 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 07:55:32,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:55:32,871 INFO L82 PathProgramCache]: Analyzing trace with hash 29891841, now seen corresponding path program 1 times [2020-12-09 07:55:32,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:55:32,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791883039] [2020-12-09 07:55:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:55:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:55:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:55:32,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791883039] [2020-12-09 07:55:32,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:55:32,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:55:32,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787156829] [2020-12-09 07:55:32,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:55:32,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:55:32,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:55:32,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:55:32,891 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 3 states. [2020-12-09 07:55:32,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:55:32,898 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2020-12-09 07:55:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:55:32,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 07:55:32,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:55:32,899 INFO L225 Difference]: With dead ends: 8 [2020-12-09 07:55:32,899 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 07:55:32,900 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 [2020-12-09 07:55:32,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 07:55:32,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 07:55:32,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 07:55:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 07:55:32,901 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-12-09 07:55:32,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:55:32,901 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 07:55:32,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:55:32,901 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 07:55:32,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 07:55:32,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 07:55:32,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 07:55:32,928 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 07:55:32,928 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 07:55:32,928 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-09 07:55:32,929 INFO L258 CegarLoopResult]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= ULTIMATE.start_main_~i~0 2147483647) (<= ULTIMATE.start_main_~N~0 2147483647) (<= 1 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 2147483647)) [2020-12-09 07:55:32,929 INFO L262 CegarLoopResult]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2020-12-09 07:55:32,929 INFO L258 CegarLoopResult]: At program point L17-2(lines 17 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~i~0 2147483647) (<= ULTIMATE.start_main_~N~0 2147483647)) [2020-12-09 07:55:32,929 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-12-09 07:55:32,930 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-09 07:55:32,930 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 07:55:32,930 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-12-09 07:55:32,930 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-12-09 07:55:32,930 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-12-09 07:55:32,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:55:32 BoogieIcfgContainer [2020-12-09 07:55:32,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:55:32,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:55:32,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:55:32,945 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:55:32,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:55:32" (3/4) ... [2020-12-09 07:55:32,948 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 07:55:32,956 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 07:55:32,957 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 07:55:32,961 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 07:55:32,988 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ab4355f6-a0f4-4934-a0fd-38cfb8f9958e/bin/utaipan/witness.graphml [2020-12-09 07:55:32,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:55:32,990 INFO L168 Benchmark]: Toolchain (without parser) took 867.18 ms. Allocated memory is still 92.3 MB. Free memory was 71.6 MB in the beginning and 69.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:55:32,990 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 92.3 MB. Free memory is still 65.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:55:32,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.72 ms. Allocated memory is still 92.3 MB. Free memory was 71.4 MB in the beginning and 63.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 07:55:32,991 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.05 ms. Allocated memory is still 92.3 MB. Free memory was 63.1 MB in the beginning and 61.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:55:32,992 INFO L168 Benchmark]: Boogie Preprocessor took 11.81 ms. Allocated memory is still 92.3 MB. Free memory was 61.6 MB in the beginning and 60.7 MB in the end (delta: 929.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:55:32,992 INFO L168 Benchmark]: RCFGBuilder took 192.84 ms. Allocated memory is still 92.3 MB. Free memory was 60.7 MB in the beginning and 50.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:55:32,993 INFO L168 Benchmark]: TraceAbstraction took 471.82 ms. Allocated memory is still 92.3 MB. Free memory was 49.7 MB in the beginning and 40.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:55:32,993 INFO L168 Benchmark]: Witness Printer took 43.54 ms. Allocated memory is still 92.3 MB. Free memory was 40.2 MB in the beginning and 69.2 MB in the end (delta: -29.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:55:32,996 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 92.3 MB. Free memory is still 65.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 122.72 ms. Allocated memory is still 92.3 MB. Free memory was 71.4 MB in the beginning and 63.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 19.05 ms. Allocated memory is still 92.3 MB. Free memory was 63.1 MB in the beginning and 61.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 11.81 ms. Allocated memory is still 92.3 MB. Free memory was 61.6 MB in the beginning and 60.7 MB in the end (delta: 929.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 192.84 ms. Allocated memory is still 92.3 MB. Free memory was 60.7 MB in the beginning and 50.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 471.82 ms. Allocated memory is still 92.3 MB. Free memory was 49.7 MB in the beginning and 40.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Witness Printer took 43.54 ms. Allocated memory is still 92.3 MB. Free memory was 40.2 MB in the beginning and 69.2 MB in the end (delta: -29.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: i <= 2147483647 && N <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((i <= 2147483647 && N <= 2147483647) && 1 <= i) && j <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 27 SDslu, 4 SDs, 0 SdLazy, 22 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...