./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.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_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/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 1cc9cf79891afa42e51c5a84218adbd4a63e1151 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:49:12,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:49:12,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:49:12,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:49:12,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:49:12,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:49:12,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:49:12,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:49:12,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:49:12,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:49:12,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:49:12,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:49:12,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:49:12,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:49:12,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:49:12,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:49:12,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:49:12,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:49:12,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:49:12,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:49:12,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:49:12,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:49:12,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:49:12,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:49:12,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:49:12,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:49:12,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:49:12,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:49:12,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:49:12,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:49:12,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:49:12,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:49:12,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:49:12,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:49:12,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:49:12,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:49:12,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:49:12,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:49:12,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:49:12,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:49:12,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:49:12,923 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:49:12,975 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:49:12,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:49:12,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:49:12,978 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:49:12,978 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:49:12,978 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:49:12,979 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:49:12,979 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:49:12,979 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:49:12,979 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:49:12,981 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:49:12,981 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:49:12,982 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:49:12,982 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:49:12,982 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:49:12,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:49:12,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:49:12,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:49:12,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:49:12,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:49:12,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:49:12,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:49:12,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:49:12,985 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:49:12,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:49:12,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:49:12,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:49:12,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:49:12,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:49:12,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:49:12,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:49:12,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:49:12,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:49:12,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:49:12,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:49:12,989 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:49:12,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:49:12,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:49:12,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:49:12,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:49:12,991 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_9c0456e5-282b-49ca-8eb5-8e8439dacc37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cc9cf79891afa42e51c5a84218adbd4a63e1151 [2020-11-30 02:49:13,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:49:13,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:49:13,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:49:13,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:49:13,355 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:49:13,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c [2020-11-30 02:49:13,454 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan/data/b5f197484/14eafcf81b174ba6b248428343087917/FLAG9448f617c [2020-11-30 02:49:14,172 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:49:14,173 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c [2020-11-30 02:49:14,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan/data/b5f197484/14eafcf81b174ba6b248428343087917/FLAG9448f617c [2020-11-30 02:49:14,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan/data/b5f197484/14eafcf81b174ba6b248428343087917 [2020-11-30 02:49:14,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:49:14,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:49:14,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:49:14,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:49:14,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:49:14,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:49:14" (1/1) ... [2020-11-30 02:49:14,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2473b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14, skipping insertion in model container [2020-11-30 02:49:14,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:49:14" (1/1) ... [2020-11-30 02:49:14,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:49:14,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:49:14,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:49:14,938 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:49:14,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:49:14,996 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:49:14,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14 WrapperNode [2020-11-30 02:49:14,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:49:15,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:49:15,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:49:15,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:49:15,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14" (1/1) ... [2020-11-30 02:49:15,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14" (1/1) ... [2020-11-30 02:49:15,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:49:15,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:49:15,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:49:15,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:49:15,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14" (1/1) ... [2020-11-30 02:49:15,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14" (1/1) ... [2020-11-30 02:49:15,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14" (1/1) ... [2020-11-30 02:49:15,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14" (1/1) ... [2020-11-30 02:49:15,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14" (1/1) ... [2020-11-30 02:49:15,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14" (1/1) ... [2020-11-30 02:49:15,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14" (1/1) ... [2020-11-30 02:49:15,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:49:15,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:49:15,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:49:15,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:49:15,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/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 02:49:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:49:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:49:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:49:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:49:15,814 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:49:15,814 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-30 02:49:15,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:49:15 BoogieIcfgContainer [2020-11-30 02:49:15,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:49:15,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:49:15,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:49:15,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:49:15,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:49:14" (1/3) ... [2020-11-30 02:49:15,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cda2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:49:15, skipping insertion in model container [2020-11-30 02:49:15,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:49:14" (2/3) ... [2020-11-30 02:49:15,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cda2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:49:15, skipping insertion in model container [2020-11-30 02:49:15,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:49:15" (3/3) ... [2020-11-30 02:49:15,829 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound5.c [2020-11-30 02:49:15,850 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:49:15,856 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 02:49:15,871 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 02:49:15,896 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:49:15,897 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:49:15,897 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:49:15,897 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:49:15,897 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:49:15,898 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:49:15,898 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:49:15,898 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:49:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-30 02:49:15,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:49:15,920 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:15,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:49:15,921 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:15,928 INFO L82 PathProgramCache]: Analyzing trace with hash 100358031, now seen corresponding path program 1 times [2020-11-30 02:49:15,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:15,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747720669] [2020-11-30 02:49:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:16,134 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 02:49:16,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747720669] [2020-11-30 02:49:16,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:16,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:49:16,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939015343] [2020-11-30 02:49:16,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:49:16,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:16,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:49:16,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:49:16,170 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-30 02:49:16,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:16,189 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-11-30 02:49:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:49:16,191 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-30 02:49:16,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:16,204 INFO L225 Difference]: With dead ends: 25 [2020-11-30 02:49:16,204 INFO L226 Difference]: Without dead ends: 11 [2020-11-30 02:49:16,212 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 02:49:16,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-30 02:49:16,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-30 02:49:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 02:49:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-30 02:49:16,252 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2020-11-30 02:49:16,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:16,253 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-30 02:49:16,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:49:16,253 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-30 02:49:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:49:16,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:16,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:49:16,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:49:16,256 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:16,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:16,258 INFO L82 PathProgramCache]: Analyzing trace with hash 99468274, now seen corresponding path program 1 times [2020-11-30 02:49:16,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:16,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975495918] [2020-11-30 02:49:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:16,285 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:49:16,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379969484] [2020-11-30 02:49:16,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/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 02:49:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:16,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 02:49:16,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:49:16,497 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 02:49:16,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:49:16,521 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:49:16,544 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 02:49:16,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975495918] [2020-11-30 02:49:16,545 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:49:16,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379969484] [2020-11-30 02:49:16,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:16,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 02:49:16,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530951622] [2020-11-30 02:49:16,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:49:16,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:49:16,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:49:16,549 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2020-11-30 02:49:18,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:18,802 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-11-30 02:49:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:49:18,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-30 02:49:18,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:18,805 INFO L225 Difference]: With dead ends: 33 [2020-11-30 02:49:18,806 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 02:49:18,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:49:18,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 02:49:18,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 18. [2020-11-30 02:49:18,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 02:49:18,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-11-30 02:49:18,814 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 5 [2020-11-30 02:49:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:18,814 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-11-30 02:49:18,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:49:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-11-30 02:49:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:49:18,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:18,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:49:19,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 02:49:19,028 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:19,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:19,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1211487480, now seen corresponding path program 1 times [2020-11-30 02:49:19,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:19,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909966116] [2020-11-30 02:49:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:19,048 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:49:19,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940648950] [2020-11-30 02:49:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/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 02:49:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:19,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:49:19,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:49:19,144 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 02:49:19,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:49:19,185 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 02:49:19,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909966116] [2020-11-30 02:49:19,186 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:49:19,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940648950] [2020-11-30 02:49:19,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:19,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-30 02:49:19,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872667850] [2020-11-30 02:49:19,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:49:19,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:19,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:49:19,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:49:19,189 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 6 states. [2020-11-30 02:49:19,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:19,248 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-11-30 02:49:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:49:19,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-30 02:49:19,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:19,250 INFO L225 Difference]: With dead ends: 26 [2020-11-30 02:49:19,251 INFO L226 Difference]: Without dead ends: 22 [2020-11-30 02:49:19,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 02:49:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-30 02:49:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-11-30 02:49:19,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 02:49:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-30 02:49:19,276 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 6 [2020-11-30 02:49:19,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:19,278 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-30 02:49:19,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:49:19,278 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-30 02:49:19,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:49:19,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:19,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:49:19,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:49:19,501 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:19,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:19,502 INFO L82 PathProgramCache]: Analyzing trace with hash -262222527, now seen corresponding path program 1 times [2020-11-30 02:49:19,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:19,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47789635] [2020-11-30 02:49:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:19,520 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:49:19,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666691428] [2020-11-30 02:49:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/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 02:49:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:19,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 02:49:19,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:49:19,641 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 02:49:19,642 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:49:19,767 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 02:49:19,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:49:19,789 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:49:19,902 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 02:49:19,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47789635] [2020-11-30 02:49:19,903 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:49:19,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666691428] [2020-11-30 02:49:19,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:49:19,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-11-30 02:49:19,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432758616] [2020-11-30 02:49:19,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:49:19,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:19,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:49:19,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:49:19,906 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 8 states. [2020-11-30 02:49:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:26,208 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-30 02:49:26,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:49:26,210 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2020-11-30 02:49:26,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:26,211 INFO L225 Difference]: With dead ends: 22 [2020-11-30 02:49:26,211 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 02:49:26,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:49:26,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 02:49:26,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 02:49:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 02:49:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-30 02:49:26,220 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2020-11-30 02:49:26,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:26,221 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-30 02:49:26,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:49:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-30 02:49:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:49:26,222 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:26,223 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2020-11-30 02:49:26,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:49:26,435 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:26,436 INFO L82 PathProgramCache]: Analyzing trace with hash 694035666, now seen corresponding path program 1 times [2020-11-30 02:49:26,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:26,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857124787] [2020-11-30 02:49:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:26,466 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:49:26,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731286264] [2020-11-30 02:49:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/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 02:49:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:26,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 02:49:26,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:49:26,909 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2020-11-30 02:49:26,933 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-11-30 02:49:26,938 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:49:27,118 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-11-30 02:49:27,133 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 2, 4, 1] term [2020-11-30 02:49:27,134 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:49:27,141 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-11-30 02:49:27,141 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:49:27,146 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:49:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:49:27,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:49:27,256 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:49:27,310 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 4, 1] term [2020-11-30 02:49:27,310 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:49:27,404 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 02:49:27,405 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:49:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 02:49:27,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857124787] [2020-11-30 02:49:27,409 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:49:27,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731286264] [2020-11-30 02:49:27,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1086800628] [2020-11-30 02:49:27,435 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-30 02:49:27,436 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:49:27,441 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:49:27,447 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:49:27,448 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:49:27,536 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:49:28,133 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:49:28,685 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-11-30 02:49:28,994 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-30 02:49:29,273 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-11-30 02:49:29,865 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-11-30 02:49:30,435 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-11-30 02:49:30,437 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:49:30,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 02:49:30,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-11-30 02:49:30,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715755724] [2020-11-30 02:49:30,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:49:30,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:30,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:49:30,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-11-30 02:49:30,440 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2020-11-30 02:49:32,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:32,868 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-30 02:49:32,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:49:32,871 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-30 02:49:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:32,872 INFO L225 Difference]: With dead ends: 27 [2020-11-30 02:49:32,872 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 02:49:32,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-11-30 02:49:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 02:49:32,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2020-11-30 02:49:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 02:49:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-30 02:49:32,879 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-11-30 02:49:32,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:32,879 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-30 02:49:32,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:49:32,879 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-30 02:49:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:49:32,880 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:32,880 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-30 02:49:33,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:49:33,081 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:33,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:33,082 INFO L82 PathProgramCache]: Analyzing trace with hash 40232488, now seen corresponding path program 1 times [2020-11-30 02:49:33,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:33,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825394630] [2020-11-30 02:49:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:33,105 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:49:33,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032805634] [2020-11-30 02:49:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/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 02:49:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:49:33,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:49:33,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:49:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:49:33,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:49:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:49:33,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825394630] [2020-11-30 02:49:33,294 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:49:33,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032805634] [2020-11-30 02:49:33,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [671720431] [2020-11-30 02:49:33,299 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-11-30 02:49:33,301 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:49:33,301 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:49:33,301 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:49:33,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:49:33,349 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:49:33,836 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:49:34,330 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-11-30 02:49:34,541 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-30 02:49:34,718 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-11-30 02:49:35,158 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-11-30 02:49:35,676 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-11-30 02:49:35,890 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-30 02:49:36,303 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-11-30 02:49:36,305 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:49:36,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 02:49:36,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-30 02:49:36,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965374729] [2020-11-30 02:49:36,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 02:49:36,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:49:36,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 02:49:36,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:49:36,307 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2020-11-30 02:49:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:49:36,459 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-11-30 02:49:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 02:49:36,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-11-30 02:49:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:49:36,464 INFO L225 Difference]: With dead ends: 31 [2020-11-30 02:49:36,464 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 02:49:36,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-11-30 02:49:36,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 02:49:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 02:49:36,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 02:49:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-11-30 02:49:36,473 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2020-11-30 02:49:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:49:36,474 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-11-30 02:49:36,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 02:49:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-11-30 02:49:36,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 02:49:36,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:49:36,475 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1] [2020-11-30 02:49:36,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-30 02:49:36,692 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:49:36,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:49:36,693 INFO L82 PathProgramCache]: Analyzing trace with hash 624616152, now seen corresponding path program 2 times [2020-11-30 02:49:36,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:49:36,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718236642] [2020-11-30 02:49:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:49:36,710 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:49:36,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614693913] [2020-11-30 02:49:36,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:49:36,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-30 02:49:36,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-30 02:49:36,825 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:49:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:49:36,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:49:36,927 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:49:36,940 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:49:37,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:49:37,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:49:37 BoogieIcfgContainer [2020-11-30 02:49:37,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:49:37,214 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:49:37,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:49:37,215 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:49:37,216 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:49:15" (3/4) ... [2020-11-30 02:49:37,218 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:49:37,310 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9c0456e5-282b-49ca-8eb5-8e8439dacc37/bin/utaipan/witness.graphml [2020-11-30 02:49:37,310 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:49:37,311 INFO L168 Benchmark]: Toolchain (without parser) took 22779.78 ms. Allocated memory was 111.1 MB in the beginning and 163.6 MB in the end (delta: 52.4 MB). Free memory was 83.1 MB in the beginning and 97.8 MB in the end (delta: -14.7 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:37,316 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 111.1 MB. Free memory is still 68.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:49:37,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.65 ms. Allocated memory was 111.1 MB in the beginning and 163.6 MB in the end (delta: 52.4 MB). Free memory was 82.6 MB in the beginning and 139.8 MB in the end (delta: -57.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:37,318 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.40 ms. Allocated memory is still 163.6 MB. Free memory was 139.8 MB in the beginning and 137.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:37,318 INFO L168 Benchmark]: Boogie Preprocessor took 58.41 ms. Allocated memory is still 163.6 MB. Free memory was 137.7 MB in the beginning and 137.0 MB in the end (delta: 690.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:49:37,319 INFO L168 Benchmark]: RCFGBuilder took 699.30 ms. Allocated memory is still 163.6 MB. Free memory was 137.0 MB in the beginning and 116.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:37,320 INFO L168 Benchmark]: TraceAbstraction took 21394.55 ms. Allocated memory is still 163.6 MB. Free memory was 116.0 MB in the beginning and 100.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:37,321 INFO L168 Benchmark]: Witness Printer took 95.72 ms. Allocated memory is still 163.6 MB. Free memory was 100.9 MB in the beginning and 97.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:49:37,330 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 111.1 MB. Free memory is still 68.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 460.65 ms. Allocated memory was 111.1 MB in the beginning and 163.6 MB in the end (delta: 52.4 MB). Free memory was 82.6 MB in the beginning and 139.8 MB in the end (delta: -57.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.40 ms. Allocated memory is still 163.6 MB. Free memory was 139.8 MB in the beginning and 137.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.41 ms. Allocated memory is still 163.6 MB. Free memory was 137.7 MB in the beginning and 137.0 MB in the end (delta: 690.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 699.30 ms. Allocated memory is still 163.6 MB. Free memory was 137.0 MB in the beginning and 116.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21394.55 ms. Allocated memory is still 163.6 MB. Free memory was 116.0 MB in the beginning and 100.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * Witness Printer took 95.72 ms. Allocated memory is still 163.6 MB. Free memory was 100.9 MB in the beginning and 97.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) [L13] COND FALSE !(!cond) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND FALSE !(counter++<5) [L16] COND TRUE !(cond) VAL [counter=6] [L9] __assert_fail("0", "mannadiv.c", 9, "reach_error") VAL [counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.2s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 77 SDslu, 111 SDs, 0 SdLazy, 110 SolverSat, 35 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 68 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=6, 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, 27 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 5753 SizeOfPredicates, 36 NumberOfNonLiveVariables, 360 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 9/36 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 incorrect! Received shutdown request...