./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af6435cd57a20eac54acaf59c651a26bc7b64982 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:06:50,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:06:50,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:06:50,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:06:50,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:06:50,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:06:50,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:06:50,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:06:50,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:06:50,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:06:50,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:06:50,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:06:50,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:06:50,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:06:50,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:06:50,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:06:50,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:06:50,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:06:50,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:06:50,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:06:50,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:06:50,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:06:50,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:06:50,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:06:50,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:06:50,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:06:50,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:06:50,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:06:50,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:06:50,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:06:50,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:06:50,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:06:50,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:06:50,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:06:50,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:06:50,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:06:50,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:06:50,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:06:50,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:06:50,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:06:50,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:06:50,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:06:50,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:06:50,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:06:50,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:06:50,700 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:06:50,700 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:06:50,700 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:06:50,700 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:06:50,701 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:06:50,701 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:06:50,701 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:06:50,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:06:50,703 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:06:50,703 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:06:50,703 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:06:50,703 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:06:50,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:06:50,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:06:50,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:06:50,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:06:50,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:06:50,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:06:50,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:06:50,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:06:50,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:06:50,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:06:50,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:06:50,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:06:50,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:06:50,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:06:50,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:06:50,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:06:50,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:06:50,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:06:50,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:06:50,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:06:50,711 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:06:50,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:06:50,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:06:50,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:06:50,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:06:50,712 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_c7df954c-0836-44d7-8851-a8bc4c75c21b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af6435cd57a20eac54acaf59c651a26bc7b64982 [2020-11-30 02:06:51,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:06:51,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:06:51,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:06:51,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:06:51,167 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:06:51,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i [2020-11-30 02:06:51,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/data/241fe7518/6157bbc54711427f9e561f661195b536/FLAG353cbcce8 [2020-11-30 02:06:51,815 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:06:51,816 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i [2020-11-30 02:06:51,824 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/data/241fe7518/6157bbc54711427f9e561f661195b536/FLAG353cbcce8 [2020-11-30 02:06:52,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/data/241fe7518/6157bbc54711427f9e561f661195b536 [2020-11-30 02:06:52,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:06:52,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:06:52,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:06:52,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:06:52,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:06:52,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:06:52" (1/1) ... [2020-11-30 02:06:52,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cad9642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52, skipping insertion in model container [2020-11-30 02:06:52,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:06:52" (1/1) ... [2020-11-30 02:06:52,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:06:52,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:06:52,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:06:52,490 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:06:52,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:06:52,532 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:06:52,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52 WrapperNode [2020-11-30 02:06:52,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:06:52,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:06:52,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:06:52,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:06:52,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52" (1/1) ... [2020-11-30 02:06:52,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52" (1/1) ... [2020-11-30 02:06:52,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:06:52,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:06:52,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:06:52,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:06:52,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52" (1/1) ... [2020-11-30 02:06:52,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52" (1/1) ... [2020-11-30 02:06:52,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52" (1/1) ... [2020-11-30 02:06:52,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52" (1/1) ... [2020-11-30 02:06:52,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52" (1/1) ... [2020-11-30 02:06:52,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52" (1/1) ... [2020-11-30 02:06:52,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52" (1/1) ... [2020-11-30 02:06:52,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:06:52,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:06:52,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:06:52,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:06:52,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/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 02:06:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:06:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:06:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:06:52,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:06:53,261 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:06:53,261 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-30 02:06:53,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:06:53 BoogieIcfgContainer [2020-11-30 02:06:53,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:06:53,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:06:53,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:06:53,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:06:53,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:06:52" (1/3) ... [2020-11-30 02:06:53,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f68fbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:06:53, skipping insertion in model container [2020-11-30 02:06:53,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:06:52" (2/3) ... [2020-11-30 02:06:53,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f68fbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:06:53, skipping insertion in model container [2020-11-30 02:06:53,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:06:53" (3/3) ... [2020-11-30 02:06:53,275 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound2.i [2020-11-30 02:06:53,288 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:06:53,294 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 02:06:53,308 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 02:06:53,339 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:06:53,339 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:06:53,339 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:06:53,339 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:06:53,340 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:06:53,340 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:06:53,340 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:06:53,340 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:06:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 02:06:53,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:06:53,363 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:53,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:06:53,365 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:06:53,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:53,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1336728302, now seen corresponding path program 1 times [2020-11-30 02:06:53,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:53,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807772483] [2020-11-30 02:06:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:53,609 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 02:06:53,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807772483] [2020-11-30 02:06:53,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:53,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:06:53,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336640171] [2020-11-30 02:06:53,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:06:53,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:53,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:06:53,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:06:53,649 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-30 02:06:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:53,669 INFO L93 Difference]: Finished difference Result 32 states and 47 transitions. [2020-11-30 02:06:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:06:53,670 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 02:06:53,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:53,684 INFO L225 Difference]: With dead ends: 32 [2020-11-30 02:06:53,684 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 02:06:53,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:06:53,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 02:06:53,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 02:06:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 02:06:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-30 02:06:53,744 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 7 [2020-11-30 02:06:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:53,745 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-30 02:06:53,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:06:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-11-30 02:06:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:06:53,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:53,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:06:53,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:06:53,749 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:06:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:53,759 INFO L82 PathProgramCache]: Analyzing trace with hash -956121442, now seen corresponding path program 1 times [2020-11-30 02:06:53,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:53,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066728577] [2020-11-30 02:06:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:53,800 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:06:53,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062387340] [2020-11-30 02:06:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:06:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:53,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:06:53,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:06:53,986 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 02:06:53,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:54,022 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 02:06:54,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066728577] [2020-11-30 02:06:54,023 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:06:54,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062387340] [2020-11-30 02:06:54,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:54,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-30 02:06:54,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577184346] [2020-11-30 02:06:54,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:06:54,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:54,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:06:54,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:06:54,027 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 6 states. [2020-11-30 02:06:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:06:54,100 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-11-30 02:06:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:06:54,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-30 02:06:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:06:54,102 INFO L225 Difference]: With dead ends: 34 [2020-11-30 02:06:54,103 INFO L226 Difference]: Without dead ends: 22 [2020-11-30 02:06:54,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:06:54,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-30 02:06:54,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-11-30 02:06:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-30 02:06:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-11-30 02:06:54,110 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2020-11-30 02:06:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:06:54,111 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-11-30 02:06:54,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:06:54,111 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-11-30 02:06:54,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 02:06:54,112 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:06:54,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:06:54,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 02:06:54,337 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:06:54,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:06:54,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1936052027, now seen corresponding path program 1 times [2020-11-30 02:06:54,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:06:54,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65837234] [2020-11-30 02:06:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:06:54,366 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:06:54,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450509713] [2020-11-30 02:06:54,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:06:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:06:54,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 02:06:54,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:06:54,589 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 02:06:54,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:06:54,609 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:06:56,232 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 02:06:56,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65837234] [2020-11-30 02:06:56,233 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:06:56,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450509713] [2020-11-30 02:06:56,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:06:56,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:06:56,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488335906] [2020-11-30 02:06:56,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:06:56,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:06:56,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:06:56,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:06:56,236 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 7 states. [2020-11-30 02:07:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:07:11,905 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2020-11-30 02:07:11,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:07:11,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-30 02:07:11,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:07:11,908 INFO L225 Difference]: With dead ends: 47 [2020-11-30 02:07:11,908 INFO L226 Difference]: Without dead ends: 35 [2020-11-30 02:07:11,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:07:11,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-30 02:07:11,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2020-11-30 02:07:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 02:07:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-11-30 02:07:11,916 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 9 [2020-11-30 02:07:11,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:07:11,916 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-11-30 02:07:11,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:07:11,917 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-11-30 02:07:11,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:07:11,918 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:07:11,918 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:07:12,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:07:12,119 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:07:12,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:07:12,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1707384734, now seen corresponding path program 1 times [2020-11-30 02:07:12,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:07:12,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016530622] [2020-11-30 02:07:12,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:07:12,140 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:07:12,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058780997] [2020-11-30 02:07:12,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:07:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:07:12,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 02:07:12,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:07:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 02:07:12,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:07:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 02:07:12,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016530622] [2020-11-30 02:07:12,300 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:07:12,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058780997] [2020-11-30 02:07:12,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:07:12,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 02:07:12,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086703764] [2020-11-30 02:07:12,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:07:12,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:07:12,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:07:12,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:07:12,303 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 8 states. [2020-11-30 02:07:12,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:07:12,365 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-11-30 02:07:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:07:12,365 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-11-30 02:07:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:07:12,366 INFO L225 Difference]: With dead ends: 49 [2020-11-30 02:07:12,366 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 02:07:12,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:07:12,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 02:07:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-11-30 02:07:12,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 02:07:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-11-30 02:07:12,382 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 14 [2020-11-30 02:07:12,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:07:12,384 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-11-30 02:07:12,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:07:12,384 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-11-30 02:07:12,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:07:12,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:07:12,387 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:07:12,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:07:12,612 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:07:12,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:07:12,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1386743794, now seen corresponding path program 1 times [2020-11-30 02:07:12,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:07:12,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652882600] [2020-11-30 02:07:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:07:12,643 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:07:12,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235157738] [2020-11-30 02:07:12,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:07:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:07:12,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:07:12,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:07:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-30 02:07:12,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:07:12,826 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:07:32,207 WARN L193 SmtUtils]: Spent 18.37 s on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-11-30 02:07:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-30 02:07:32,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652882600] [2020-11-30 02:07:32,405 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:07:32,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235157738] [2020-11-30 02:07:32,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:07:32,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 02:07:32,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379248033] [2020-11-30 02:07:32,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:07:32,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:07:32,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:07:32,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:07:32,424 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2020-11-30 02:07:32,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:07:32,566 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-30 02:07:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:07:32,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-30 02:07:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:07:32,569 INFO L225 Difference]: With dead ends: 52 [2020-11-30 02:07:32,569 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 02:07:32,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:07:32,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 02:07:32,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 27. [2020-11-30 02:07:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 02:07:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-11-30 02:07:32,582 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 15 [2020-11-30 02:07:32,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:07:32,586 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-30 02:07:32,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:07:32,587 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-11-30 02:07:32,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:07:32,587 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:07:32,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:07:32,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:07:32,789 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:07:32,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:07:32,790 INFO L82 PathProgramCache]: Analyzing trace with hash 833472689, now seen corresponding path program 1 times [2020-11-30 02:07:32,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:07:32,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106225846] [2020-11-30 02:07:32,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:07:32,818 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:07:32,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064590181] [2020-11-30 02:07:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:07:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:07:32,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:07:32,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:07:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:07:32,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:07:32,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:07:32,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106225846] [2020-11-30 02:07:32,930 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:07:32,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064590181] [2020-11-30 02:07:32,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:07:32,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 02:07:32,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350413059] [2020-11-30 02:07:32,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:07:32,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:07:32,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:07:32,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:07:32,932 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2020-11-30 02:07:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:07:32,988 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-30 02:07:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:07:32,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 02:07:32,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:07:32,988 INFO L225 Difference]: With dead ends: 28 [2020-11-30 02:07:32,988 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:07:32,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:07:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:07:32,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:07:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:07:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:07:32,990 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-30 02:07:32,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:07:32,990 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:07:32,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:07:32,990 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:07:32,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:07:33,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 02:07:33,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:07:33,372 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:07:33,373 INFO L274 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-11-30 02:07:33,373 INFO L270 CegarLoopResult]: At program point L19-1(line 40) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 1) (< (mod ULTIMATE.start_main_~r~0 4294967296) (mod ULTIMATE.start_main_~b~0 4294967296)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) (<= 2 ~counter~0)) [2020-11-30 02:07:33,373 INFO L274 CegarLoopResult]: For program point L19-2(lines 19 22) no Hoare annotation was computed. [2020-11-30 02:07:33,373 INFO L277 CegarLoopResult]: At program point L19-3(lines 18 24) the Hoare annotation is: true [2020-11-30 02:07:33,373 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:07:33,374 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:07:33,374 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 02:07:33,374 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 02:07:33,374 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-30 02:07:33,374 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-30 02:07:33,374 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:07:33,374 INFO L274 CegarLoopResult]: For program point L38(lines 38 47) no Hoare annotation was computed. [2020-11-30 02:07:33,374 INFO L274 CegarLoopResult]: For program point L38-2(lines 38 47) no Hoare annotation was computed. [2020-11-30 02:07:33,374 INFO L274 CegarLoopResult]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2020-11-30 02:07:33,375 INFO L270 CegarLoopResult]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~q~0 0)) (.cse1 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~b~0 1) .cse0 .cse1 (<= 0 ~counter~0)) (and (<= 1 ~counter~0) .cse0 .cse1))) [2020-11-30 02:07:33,375 INFO L274 CegarLoopResult]: For program point L43-2(lines 26 50) no Hoare annotation was computed. [2020-11-30 02:07:33,375 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-11-30 02:07:33,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:07:33 BoogieIcfgContainer [2020-11-30 02:07:33,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:07:33,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:07:33,395 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:07:33,395 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:07:33,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:06:53" (3/4) ... [2020-11-30 02:07:33,398 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:07:33,409 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-30 02:07:33,410 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:07:33,410 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:07:33,410 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:07:33,462 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c7df954c-0836-44d7-8851-a8bc4c75c21b/bin/utaipan/witness.graphml [2020-11-30 02:07:33,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:07:33,464 INFO L168 Benchmark]: Toolchain (without parser) took 41273.89 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 75.5 MB in the beginning and 48.8 MB in the end (delta: 26.7 MB). Peak memory consumption was 55.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:33,465 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 77.6 MB. Free memory was 47.1 MB in the beginning and 47.0 MB in the end (delta: 42.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:07:33,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.61 ms. Allocated memory is still 104.9 MB. Free memory was 75.1 MB in the beginning and 65.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:33,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.89 ms. Allocated memory is still 104.9 MB. Free memory was 65.5 MB in the beginning and 64.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:07:33,467 INFO L168 Benchmark]: Boogie Preprocessor took 28.50 ms. Allocated memory is still 104.9 MB. Free memory was 64.0 MB in the beginning and 62.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:33,467 INFO L168 Benchmark]: RCFGBuilder took 655.09 ms. Allocated memory is still 104.9 MB. Free memory was 62.9 MB in the beginning and 45.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:33,468 INFO L168 Benchmark]: TraceAbstraction took 40128.88 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 45.5 MB in the beginning and 51.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:33,469 INFO L168 Benchmark]: Witness Printer took 67.66 ms. Allocated memory is still 132.1 MB. Free memory was 51.8 MB in the beginning and 48.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:33,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 77.6 MB. Free memory was 47.1 MB in the beginning and 47.0 MB in the end (delta: 42.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.61 ms. Allocated memory is still 104.9 MB. Free memory was 75.1 MB in the beginning and 65.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.89 ms. Allocated memory is still 104.9 MB. Free memory was 65.5 MB in the beginning and 64.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.50 ms. Allocated memory is still 104.9 MB. Free memory was 64.0 MB in the beginning and 62.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 655.09 ms. Allocated memory is still 104.9 MB. Free memory was 62.9 MB in the beginning and 45.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 40128.88 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 45.5 MB in the beginning and 51.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. * Witness Printer took 67.66 ms. Allocated memory is still 132.1 MB. Free memory was 51.8 MB in the beginning and 48.8 MB in the end (delta: 3.0 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: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((b == 1 && q == 0) && A == r) && 0 <= counter) || ((1 <= counter && q == 0) && A == r) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((b == 1 && r % 4294967296 < b % 4294967296) && 1 <= cond) && q == 0) && A == r) && 2 <= counter - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 39.8s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 75 SDslu, 183 SDs, 0 SdLazy, 110 SolverSat, 23 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 15.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 21.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 25 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 48 HoareAnnotationTreeSize, 3 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 21.7s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 120 ConstructedInterpolants, 11 QuantifiedInterpolants, 14914 SizeOfPredicates, 16 NumberOfNonLiveVariables, 321 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 40/40 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...