./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c --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_215eb615-f009-4e95-8526-6aad55ef3a92/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/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 e42acecc60a22c4c35e0f65ff603b488451c653e ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:58:17,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:58:17,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:58:17,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:58:17,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:58:17,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:58:17,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:58:17,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:58:17,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:58:17,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:58:17,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:58:17,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:58:17,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:58:17,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:58:17,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:58:17,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:58:17,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:58:17,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:58:17,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:58:17,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:58:17,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:58:17,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:58:17,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:58:17,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:58:17,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:58:17,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:58:17,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:58:17,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:58:17,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:58:17,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:58:17,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:58:17,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:58:17,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:58:17,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:58:17,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:58:17,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:58:17,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:58:17,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:58:17,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:58:17,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:58:17,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:58:17,857 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:58:17,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:58:17,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:58:17,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:58:17,908 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:58:17,908 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:58:17,908 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:58:17,908 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:58:17,909 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:58:17,909 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:58:17,909 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:58:17,910 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:58:17,910 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:58:17,911 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:58:17,911 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:58:17,911 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:58:17,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:58:17,912 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:58:17,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:58:17,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:58:17,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:58:17,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:58:17,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:58:17,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:58:17,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:58:17,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:58:17,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:58:17,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:58:17,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:58:17,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:58:17,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:58:17,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:58:17,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:58:17,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:58:17,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:58:17,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:58:17,919 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:58:17,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:58:17,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:58:17,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:58:17,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:58:17,920 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_215eb615-f009-4e95-8526-6aad55ef3a92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e42acecc60a22c4c35e0f65ff603b488451c653e [2020-11-22 12:58:18,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:58:18,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:58:18,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:58:18,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:58:18,188 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:58:18,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c [2020-11-22 12:58:18,259 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/bin/utaipan/data/eee82f539/17724813454b4136b6477c72f154e949/FLAGa8bd57b55 [2020-11-22 12:58:18,757 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:58:18,758 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c [2020-11-22 12:58:18,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/bin/utaipan/data/eee82f539/17724813454b4136b6477c72f154e949/FLAGa8bd57b55 [2020-11-22 12:58:19,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/bin/utaipan/data/eee82f539/17724813454b4136b6477c72f154e949 [2020-11-22 12:58:19,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:58:19,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:58:19,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:19,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:58:19,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:58:19,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:19" (1/1) ... [2020-11-22 12:58:19,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8a893f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19, skipping insertion in model container [2020-11-22 12:58:19,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:19" (1/1) ... [2020-11-22 12:58:19,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:58:19,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:58:19,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:19,372 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:58:19,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:19,409 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:58:19,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19 WrapperNode [2020-11-22 12:58:19,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:19,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:58:19,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:58:19,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:58:19,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19" (1/1) ... [2020-11-22 12:58:19,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19" (1/1) ... [2020-11-22 12:58:19,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:58:19,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:58:19,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:58:19,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:58:19,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19" (1/1) ... [2020-11-22 12:58:19,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19" (1/1) ... [2020-11-22 12:58:19,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19" (1/1) ... [2020-11-22 12:58:19,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19" (1/1) ... [2020-11-22 12:58:19,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19" (1/1) ... [2020-11-22 12:58:19,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19" (1/1) ... [2020-11-22 12:58:19,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19" (1/1) ... [2020-11-22 12:58:19,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:58:19,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:58:19,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:58:19,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:58:19,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/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 [2020-11-22 12:58:19,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:58:19,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:58:19,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:58:19,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:58:20,540 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:58:20,540 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-11-22 12:58:20,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:20 BoogieIcfgContainer [2020-11-22 12:58:20,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:58:20,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:58:20,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:58:20,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:58:20,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:58:19" (1/3) ... [2020-11-22 12:58:20,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b072ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:58:20, skipping insertion in model container [2020-11-22 12:58:20,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:19" (2/3) ... [2020-11-22 12:58:20,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b072ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:58:20, skipping insertion in model container [2020-11-22 12:58:20,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:20" (3/3) ... [2020-11-22 12:58:20,558 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound10.c [2020-11-22 12:58:20,569 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:58:20,577 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-22 12:58:20,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-22 12:58:20,630 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:58:20,631 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:58:20,631 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:58:20,631 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:58:20,631 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:58:20,632 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:58:20,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:58:20,632 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:58:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-22 12:58:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:58:20,658 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:20,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:58:20,659 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:20,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:20,665 INFO L82 PathProgramCache]: Analyzing trace with hash 195435012, now seen corresponding path program 1 times [2020-11-22 12:58:20,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:20,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65878278] [2020-11-22 12:58:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:20,755 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:58:20,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807237818] [2020-11-22 12:58:20,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/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 [2020-11-22 12:58:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:20,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:58:20,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:58:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:20,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:58:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:20,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65878278] [2020-11-22 12:58:20,860 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:58:20,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807237818] [2020-11-22 12:58:20,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:20,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:58:20,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905076095] [2020-11-22 12:58:20,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:58:20,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:20,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:58:20,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:58:20,887 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-11-22 12:58:20,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:20,910 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2020-11-22 12:58:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:58:20,912 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-22 12:58:20,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:20,924 INFO L225 Difference]: With dead ends: 61 [2020-11-22 12:58:20,924 INFO L226 Difference]: Without dead ends: 29 [2020-11-22 12:58:20,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:58:20,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-22 12:58:20,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-22 12:58:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-22 12:58:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-11-22 12:58:20,960 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 5 [2020-11-22 12:58:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:20,960 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-11-22 12:58:20,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:58:20,960 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-11-22 12:58:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:58:20,961 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:20,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:58:21,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 12:58:21,164 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:21,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1652424623, now seen corresponding path program 1 times [2020-11-22 12:58:21,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:21,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271166612] [2020-11-22 12:58:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:21,171 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:58:21,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1503788503] [2020-11-22 12:58:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/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 [2020-11-22 12:58:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:21,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:58:21,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:58:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:21,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:58:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:21,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271166612] [2020-11-22 12:58:21,302 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:58:21,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503788503] [2020-11-22 12:58:21,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:21,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:58:21,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78426681] [2020-11-22 12:58:21,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:58:21,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:21,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:58:21,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:21,306 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 3 states. [2020-11-22 12:58:21,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:21,343 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-11-22 12:58:21,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:58:21,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-22 12:58:21,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:21,345 INFO L225 Difference]: With dead ends: 57 [2020-11-22 12:58:21,345 INFO L226 Difference]: Without dead ends: 49 [2020-11-22 12:58:21,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:21,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-22 12:58:21,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2020-11-22 12:58:21,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-22 12:58:21,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-11-22 12:58:21,352 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 6 [2020-11-22 12:58:21,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:21,352 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-11-22 12:58:21,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:58:21,353 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-11-22 12:58:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:58:21,353 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:21,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:58:21,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:58:21,579 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:21,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:21,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1652424625, now seen corresponding path program 1 times [2020-11-22 12:58:21,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:21,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983118137] [2020-11-22 12:58:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:21,585 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:58:21,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822885396] [2020-11-22 12:58:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/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 [2020-11-22 12:58:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:21,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 12:58:21,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:58:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:21,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:58:21,749 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:58:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:21,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983118137] [2020-11-22 12:58:21,781 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:58:21,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822885396] [2020-11-22 12:58:21,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:21,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 12:58:21,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120749218] [2020-11-22 12:58:21,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:58:21,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:21,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:58:21,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:58:21,783 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 6 states. [2020-11-22 12:58:24,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:24,065 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-11-22 12:58:24,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 12:58:24,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-22 12:58:24,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:24,070 INFO L225 Difference]: With dead ends: 99 [2020-11-22 12:58:24,070 INFO L226 Difference]: Without dead ends: 97 [2020-11-22 12:58:24,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:58:24,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-22 12:58:24,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 42. [2020-11-22 12:58:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-22 12:58:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-11-22 12:58:24,081 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2020-11-22 12:58:24,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:24,082 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-11-22 12:58:24,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:58:24,082 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-11-22 12:58:24,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:58:24,083 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:24,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:24,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:58:24,299 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:24,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:24,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1157646828, now seen corresponding path program 1 times [2020-11-22 12:58:24,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:24,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560535193] [2020-11-22 12:58:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:24,304 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:58:24,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20566867] [2020-11-22 12:58:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/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 [2020-11-22 12:58:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:24,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 12:58:24,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:58:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:24,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:58:24,419 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:58:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:24,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560535193] [2020-11-22 12:58:24,445 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:58:24,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20566867] [2020-11-22 12:58:24,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:24,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:58:24,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879547001] [2020-11-22 12:58:24,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:58:24,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:24,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:58:24,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:58:24,447 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 5 states. [2020-11-22 12:58:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:24,602 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-11-22 12:58:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:58:24,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-22 12:58:24,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:24,605 INFO L225 Difference]: With dead ends: 62 [2020-11-22 12:58:24,605 INFO L226 Difference]: Without dead ends: 60 [2020-11-22 12:58:24,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:58:24,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-22 12:58:24,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-11-22 12:58:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-22 12:58:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-11-22 12:58:24,621 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 8 [2020-11-22 12:58:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:24,621 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-11-22 12:58:24,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:58:24,621 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-11-22 12:58:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:58:24,622 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:24,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:24,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:58:24,823 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash -101883593, now seen corresponding path program 1 times [2020-11-22 12:58:24,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:24,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075088004] [2020-11-22 12:58:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:24,828 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:58:24,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442137874] [2020-11-22 12:58:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/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 [2020-11-22 12:58:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:24,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 12:58:24,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:58:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:24,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:58:24,952 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:58:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:24,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075088004] [2020-11-22 12:58:24,956 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:58:24,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442137874] [2020-11-22 12:58:24,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:24,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2020-11-22 12:58:24,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290921449] [2020-11-22 12:58:24,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:58:24,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:24,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:58:24,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:58:24,958 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 4 states. [2020-11-22 12:58:24,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:24,960 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-11-22 12:58:24,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:58:24,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-22 12:58:24,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:24,961 INFO L225 Difference]: With dead ends: 53 [2020-11-22 12:58:24,961 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:58:24,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:58:24,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:58:24,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:58:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:58:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:58:24,963 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-22 12:58:24,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:24,963 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:58:24,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:58:24,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:58:24,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:58:25,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:58:25,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:58:25,214 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:58:25,214 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:58:25,214 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: false [2020-11-22 12:58:25,214 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:58:25,214 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: false [2020-11-22 12:58:25,215 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:58:25,215 INFO L270 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2020-11-22 12:58:25,215 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:58:25,215 INFO L270 CegarLoopResult]: At program point L11-7(lines 52 53) the Hoare annotation is: false [2020-11-22 12:58:25,215 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:58:25,215 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: false [2020-11-22 12:58:25,215 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:58:25,215 INFO L277 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: true [2020-11-22 12:58:25,216 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:58:25,216 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:58:25,216 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:58:25,216 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:58:25,216 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:58:25,216 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:58:25,216 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:58:25,216 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:58:25,216 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:58:25,217 INFO L270 CegarLoopResult]: At program point L47-2(lines 47 56) the Hoare annotation is: false [2020-11-22 12:58:25,217 INFO L274 CegarLoopResult]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2020-11-22 12:58:25,217 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:58:25,217 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:58:25,217 INFO L270 CegarLoopResult]: At program point L41-1(lines 7 68) the Hoare annotation is: false [2020-11-22 12:58:25,217 INFO L274 CegarLoopResult]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2020-11-22 12:58:25,217 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:58:25,217 INFO L274 CegarLoopResult]: For program point L42(lines 42 43) no Hoare annotation was computed. [2020-11-22 12:58:25,217 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:58:25,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:58:25 BoogieIcfgContainer [2020-11-22 12:58:25,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:58:25,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:58:25,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:58:25,227 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:58:25,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:20" (3/4) ... [2020-11-22 12:58:25,231 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:58:25,241 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2020-11-22 12:58:25,242 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-22 12:58:25,242 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 12:58:25,243 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:58:25,304 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_215eb615-f009-4e95-8526-6aad55ef3a92/bin/utaipan/witness.graphml [2020-11-22 12:58:25,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:58:25,306 INFO L168 Benchmark]: Toolchain (without parser) took 6167.96 ms. Allocated memory was 102.8 MB in the beginning and 142.6 MB in the end (delta: 39.8 MB). Free memory was 76.1 MB in the beginning and 108.4 MB in the end (delta: -32.3 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:25,306 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:58:25,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.52 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 79.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:25,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.78 ms. Allocated memory is still 102.8 MB. Free memory was 79.0 MB in the beginning and 77.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:25,308 INFO L168 Benchmark]: Boogie Preprocessor took 27.02 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 75.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:25,309 INFO L168 Benchmark]: RCFGBuilder took 1059.57 ms. Allocated memory was 102.8 MB in the beginning and 142.6 MB in the end (delta: 39.8 MB). Free memory was 75.9 MB in the beginning and 111.7 MB in the end (delta: -35.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:25,309 INFO L168 Benchmark]: TraceAbstraction took 4682.49 ms. Allocated memory is still 142.6 MB. Free memory was 111.7 MB in the beginning and 111.6 MB in the end (delta: 116.9 kB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:25,310 INFO L168 Benchmark]: Witness Printer took 77.33 ms. Allocated memory is still 142.6 MB. Free memory was 111.6 MB in the beginning and 108.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:25,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.52 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 79.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.78 ms. Allocated memory is still 102.8 MB. Free memory was 79.0 MB in the beginning and 77.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.02 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 75.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1059.57 ms. Allocated memory was 102.8 MB in the beginning and 142.6 MB in the end (delta: 39.8 MB). Free memory was 75.9 MB in the beginning and 111.7 MB in the end (delta: -35.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4682.49 ms. Allocated memory is still 142.6 MB. Free memory was 111.7 MB in the beginning and 111.6 MB in the end (delta: 116.9 kB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. * Witness Printer took 77.33 ms. Allocated memory is still 142.6 MB. Free memory was 111.6 MB in the beginning and 108.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 138 SDslu, 112 SDs, 0 SdLazy, 106 SolverSat, 10 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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, 5 MinimizatonAttempts, 80 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 1878 SizeOfPredicates, 25 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...