./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wcet2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wcet2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/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 4f5dfa3dfde4da491a923b915452cddcc4ed5c87 .............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:54:50,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:54:50,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:54:50,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:54:50,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:54:50,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:54:50,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:54:50,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:54:50,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:54:50,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:54:50,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:54:50,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:54:50,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:54:50,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:54:50,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:54:50,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:54:50,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:54:50,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:54:50,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:54:50,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:54:50,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:54:50,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:54:50,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:54:50,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:54:50,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:54:50,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:54:50,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:54:50,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:54:50,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:54:50,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:54:50,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:54:50,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:54:50,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:54:50,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:54:50,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:54:50,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:54:50,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:54:50,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:54:50,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:54:50,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:54:50,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:54:50,620 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-30 01:54:50,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:54:50,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:54:50,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:54:50,669 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:54:50,670 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:54:50,670 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:54:50,671 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:54:50,671 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:54:50,671 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:54:50,671 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:54:50,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:54:50,673 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:54:50,673 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:54:50,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:54:50,674 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:54:50,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:54:50,679 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:54:50,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:54:50,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:54:50,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:54:50,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:54:50,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:54:50,681 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 01:54:50,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:54:50,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:54:50,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:54:50,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:54:50,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:54:50,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:54:50,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:54:50,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:54:50,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:54:50,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:54:50,684 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:54:50,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:54:50,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:54:50,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:54:50,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:54:50,686 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_14d82f7e-072a-40be-b05d-25a14daa39e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5dfa3dfde4da491a923b915452cddcc4ed5c87 [2020-11-30 01:54:51,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:54:51,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:54:51,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:54:51,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:54:51,098 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:54:51,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wcet2.c [2020-11-30 01:54:51,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/bin/utaipan/data/3436a8464/7dd47379938d4799b1e1eb1038df8692/FLAGc24f1ed57 [2020-11-30 01:54:51,825 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:54:51,826 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wcet2.c [2020-11-30 01:54:51,838 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/bin/utaipan/data/3436a8464/7dd47379938d4799b1e1eb1038df8692/FLAGc24f1ed57 [2020-11-30 01:54:52,203 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/bin/utaipan/data/3436a8464/7dd47379938d4799b1e1eb1038df8692 [2020-11-30 01:54:52,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:54:52,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:54:52,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:54:52,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:54:52,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:54:52,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:54:52" (1/1) ... [2020-11-30 01:54:52,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c49f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52, skipping insertion in model container [2020-11-30 01:54:52,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:54:52" (1/1) ... [2020-11-30 01:54:52,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:54:52,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:54:52,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:54:52,452 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:54:52,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:54:52,500 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:54:52,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52 WrapperNode [2020-11-30 01:54:52,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:54:52,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:54:52,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:54:52,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:54:52,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52" (1/1) ... [2020-11-30 01:54:52,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52" (1/1) ... [2020-11-30 01:54:52,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:54:52,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:54:52,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:54:52,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:54:52,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52" (1/1) ... [2020-11-30 01:54:52,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52" (1/1) ... [2020-11-30 01:54:52,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52" (1/1) ... [2020-11-30 01:54:52,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52" (1/1) ... [2020-11-30 01:54:52,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52" (1/1) ... [2020-11-30 01:54:52,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52" (1/1) ... [2020-11-30 01:54:52,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52" (1/1) ... [2020-11-30 01:54:52,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:54:52,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:54:52,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:54:52,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:54:52,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/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 [2020-11-30 01:54:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:54:52,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:54:53,082 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:54:53,082 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 01:54:53,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:54:53 BoogieIcfgContainer [2020-11-30 01:54:53,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:54:53,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:54:53,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:54:53,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:54:53,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:54:52" (1/3) ... [2020-11-30 01:54:53,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cabd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:54:53, skipping insertion in model container [2020-11-30 01:54:53,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:54:52" (2/3) ... [2020-11-30 01:54:53,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cabd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:54:53, skipping insertion in model container [2020-11-30 01:54:53,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:54:53" (3/3) ... [2020-11-30 01:54:53,097 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-wcet2.c [2020-11-30 01:54:53,111 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:54:53,116 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 01:54:53,132 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 01:54:53,175 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:54:53,175 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:54:53,176 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:54:53,176 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:54:53,176 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:54:53,176 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:54:53,176 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:54:53,176 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:54:53,195 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-30 01:54:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 01:54:53,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:53,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 01:54:53,205 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:54:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:53,215 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-11-30 01:54:53,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:53,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400956138] [2020-11-30 01:54:53,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:53,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400956138] [2020-11-30 01:54:53,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:53,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:54:53,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535798065] [2020-11-30 01:54:53,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:53,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:53,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:53,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:53,492 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-11-30 01:54:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:53,597 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-30 01:54:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:53,601 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 01:54:53,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:53,611 INFO L225 Difference]: With dead ends: 22 [2020-11-30 01:54:53,612 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 01:54:53,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 01:54:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2020-11-30 01:54:53,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 01:54:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-11-30 01:54:53,668 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 4 [2020-11-30 01:54:53,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:53,669 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-30 01:54:53,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:53,669 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-30 01:54:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 01:54:53,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:53,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 01:54:53,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:54:53,671 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:54:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:53,675 INFO L82 PathProgramCache]: Analyzing trace with hash 964251, now seen corresponding path program 1 times [2020-11-30 01:54:53,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:53,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93915681] [2020-11-30 01:54:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:53,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93915681] [2020-11-30 01:54:53,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:53,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:54:53,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274277461] [2020-11-30 01:54:53,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:53,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:53,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:53,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:53,735 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2020-11-30 01:54:53,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:53,800 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-11-30 01:54:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:53,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 01:54:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:53,804 INFO L225 Difference]: With dead ends: 13 [2020-11-30 01:54:53,804 INFO L226 Difference]: Without dead ends: 12 [2020-11-30 01:54:53,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:53,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-30 01:54:53,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-30 01:54:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 01:54:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-30 01:54:53,809 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 4 [2020-11-30 01:54:53,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:53,809 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-30 01:54:53,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:53,810 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-30 01:54:53,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 01:54:53,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:53,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 01:54:53,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:54:53,812 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:54:53,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:53,813 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-11-30 01:54:53,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:53,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13670522] [2020-11-30 01:54:53,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:53,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13670522] [2020-11-30 01:54:53,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:53,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:54:53,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653045809] [2020-11-30 01:54:53,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:53,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:53,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:53,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:53,850 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2020-11-30 01:54:53,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:53,874 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-11-30 01:54:53,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:53,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 01:54:53,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:53,876 INFO L225 Difference]: With dead ends: 13 [2020-11-30 01:54:53,876 INFO L226 Difference]: Without dead ends: 12 [2020-11-30 01:54:53,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:53,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-30 01:54:53,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-11-30 01:54:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 01:54:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-11-30 01:54:53,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2020-11-30 01:54:53,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:53,881 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-30 01:54:53,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-11-30 01:54:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 01:54:53,882 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:53,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 01:54:53,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:54:53,883 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:54:53,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:53,887 INFO L82 PathProgramCache]: Analyzing trace with hash 29891841, now seen corresponding path program 1 times [2020-11-30 01:54:53,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:53,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927982353] [2020-11-30 01:54:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:54:53,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927982353] [2020-11-30 01:54:53,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:53,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 01:54:53,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309808525] [2020-11-30 01:54:53,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:53,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:53,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:53,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:53,930 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 3 states. [2020-11-30 01:54:53,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:53,964 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-11-30 01:54:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:53,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 01:54:53,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:53,966 INFO L225 Difference]: With dead ends: 11 [2020-11-30 01:54:53,966 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 01:54:53,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:53,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 01:54:53,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 01:54:53,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 01:54:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-30 01:54:53,971 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2020-11-30 01:54:53,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:53,972 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-30 01:54:53,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:53,972 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-11-30 01:54:53,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:54:53,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:54:53,973 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-11-30 01:54:53,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:54:53,974 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:54:53,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:54:53,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166548, now seen corresponding path program 1 times [2020-11-30 01:54:53,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:54:53,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644252468] [2020-11-30 01:54:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:54:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:54:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:54:54,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644252468] [2020-11-30 01:54:54,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:54:54,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:54:54,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856170401] [2020-11-30 01:54:54,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:54:54,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:54:54,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:54:54,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:54,025 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2020-11-30 01:54:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:54:54,061 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-11-30 01:54:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:54:54,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-30 01:54:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:54:54,063 INFO L225 Difference]: With dead ends: 13 [2020-11-30 01:54:54,063 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:54:54,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:54:54,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:54:54,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:54:54,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:54:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:54:54,064 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-30 01:54:54,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:54:54,065 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:54:54,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:54:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:54:54,065 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:54:54,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:54:54,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:54:54,111 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-30 01:54:54,111 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:54:54,111 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-30 01:54:54,112 INFO L270 CegarLoopResult]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~j~0) (<= 0 (+ ULTIMATE.start_main_~i~0 2147483648)) (<= ULTIMATE.start_main_~i~0 4)) [2020-11-30 01:54:54,112 INFO L274 CegarLoopResult]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2020-11-30 01:54:54,120 INFO L270 CegarLoopResult]: At program point L17-2(lines 17 23) the Hoare annotation is: (<= 0 (+ ULTIMATE.start_main_~i~0 2147483648)) [2020-11-30 01:54:54,120 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-30 01:54:54,120 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-30 01:54:54,120 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:54:54,120 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-30 01:54:54,120 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-30 01:54:54,121 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-30 01:54:54,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:54:54 BoogieIcfgContainer [2020-11-30 01:54:54,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:54:54,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:54:54,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:54:54,143 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:54:54,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:54:53" (3/4) ... [2020-11-30 01:54:54,148 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:54:54,159 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 01:54:54,160 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:54:54,160 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:54:54,204 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_14d82f7e-072a-40be-b05d-25a14daa39e2/bin/utaipan/witness.graphml [2020-11-30 01:54:54,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:54:54,207 INFO L168 Benchmark]: Toolchain (without parser) took 1996.63 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.3 MB in the beginning and 73.2 MB in the end (delta: -26.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:54:54,208 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 79.7 MB. Free memory is still 62.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:54:54,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.27 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.1 MB in the beginning and 76.1 MB in the end (delta: -30.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:54:54,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.56 ms. Allocated memory is still 96.5 MB. Free memory was 75.9 MB in the beginning and 74.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:54:54,210 INFO L168 Benchmark]: Boogie Preprocessor took 31.43 ms. Allocated memory is still 96.5 MB. Free memory was 74.6 MB in the beginning and 73.8 MB in the end (delta: 876.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:54:54,211 INFO L168 Benchmark]: RCFGBuilder took 510.56 ms. Allocated memory is still 96.5 MB. Free memory was 73.8 MB in the beginning and 63.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:54:54,212 INFO L168 Benchmark]: TraceAbstraction took 1054.21 ms. Allocated memory is still 96.5 MB. Free memory was 62.7 MB in the beginning and 75.2 MB in the end (delta: -12.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:54:54,212 INFO L168 Benchmark]: Witness Printer took 62.84 ms. Allocated memory is still 96.5 MB. Free memory was 75.2 MB in the beginning and 73.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:54:54,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 79.7 MB. Free memory is still 62.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.27 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.1 MB in the beginning and 76.1 MB in the end (delta: -30.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.56 ms. Allocated memory is still 96.5 MB. Free memory was 75.9 MB in the beginning and 74.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.43 ms. Allocated memory is still 96.5 MB. Free memory was 74.6 MB in the beginning and 73.8 MB in the end (delta: 876.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 510.56 ms. Allocated memory is still 96.5 MB. Free memory was 73.8 MB in the beginning and 63.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1054.21 ms. Allocated memory is still 96.5 MB. Free memory was 62.7 MB in the beginning and 75.2 MB in the end (delta: -12.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * Witness Printer took 62.84 ms. Allocated memory is still 96.5 MB. Free memory was 75.2 MB in the beginning and 73.2 MB in the end (delta: 2.0 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: 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: 0 <= i + 2147483648 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (0 <= j && 0 <= i + 2147483648) && i <= 4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 28 SDslu, 7 SDs, 0 SdLazy, 36 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=1, 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, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 17 HoareAnnotationTreeSize, 2 FomulaSimplifications, 29 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 210 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 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...