./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/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 a977b022b43b9a8549ddd4aa535fee7d8f5173c1 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:15:30,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:15:30,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:15:31,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:15:31,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:15:31,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:15:31,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:15:31,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:15:31,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:15:31,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:15:31,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:15:31,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:15:31,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:15:31,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:15:31,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:15:31,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:15:31,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:15:31,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:15:31,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:15:31,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:15:31,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:15:31,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:15:31,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:15:31,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:15:31,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:15:31,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:15:31,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:15:31,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:15:31,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:15:31,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:15:31,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:15:31,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:15:31,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:15:31,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:15:31,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:15:31,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:15:31,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:15:31,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:15:31,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:15:31,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:15:31,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:15:31,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:15:31,085 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:15:31,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:15:31,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:15:31,086 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:15:31,086 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:15:31,087 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:15:31,087 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:15:31,087 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:15:31,087 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:15:31,087 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:15:31,087 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:15:31,087 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:15:31,088 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:15:31,088 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:15:31,088 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:15:31,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:15:31,088 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:15:31,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:15:31,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:15:31,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:15:31,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:15:31,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:15:31,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:15:31,089 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:15:31,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:15:31,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:15:31,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:15:31,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:15:31,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:15:31,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:15:31,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:15:31,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:15:31,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:15:31,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:15:31,091 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:15:31,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:15:31,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:15:31,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:15:31,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:15:31,092 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_cef32874-57a2-4090-ae8c-71d302f2090e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a977b022b43b9a8549ddd4aa535fee7d8f5173c1 [2020-12-09 08:15:31,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:15:31,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:15:31,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:15:31,291 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:15:31,291 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:15:31,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2020-12-09 08:15:31,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan/data/d0396b466/1e26436f1e9345159f102f9f07ac54a6/FLAGdebcaca44 [2020-12-09 08:15:31,704 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:15:31,705 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2020-12-09 08:15:31,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan/data/d0396b466/1e26436f1e9345159f102f9f07ac54a6/FLAGdebcaca44 [2020-12-09 08:15:31,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan/data/d0396b466/1e26436f1e9345159f102f9f07ac54a6 [2020-12-09 08:15:31,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:15:31,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:15:31,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:15:31,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:15:31,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:15:31,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:15:31" (1/1) ... [2020-12-09 08:15:31,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1258fa54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31, skipping insertion in model container [2020-12-09 08:15:31,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:15:31" (1/1) ... [2020-12-09 08:15:31,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:15:31,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:15:31,851 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2020-12-09 08:15:31,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:15:31,877 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:15:31,885 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2020-12-09 08:15:31,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:15:31,905 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:15:31,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31 WrapperNode [2020-12-09 08:15:31,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:15:31,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:15:31,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:15:31,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:15:31,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31" (1/1) ... [2020-12-09 08:15:31,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31" (1/1) ... [2020-12-09 08:15:31,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:15:31,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:15:31,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:15:31,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:15:31,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31" (1/1) ... [2020-12-09 08:15:31,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31" (1/1) ... [2020-12-09 08:15:31,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31" (1/1) ... [2020-12-09 08:15:31,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31" (1/1) ... [2020-12-09 08:15:31,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31" (1/1) ... [2020-12-09 08:15:31,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31" (1/1) ... [2020-12-09 08:15:31,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31" (1/1) ... [2020-12-09 08:15:31,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:15:31,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:15:31,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:15:31,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:15:31,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:15:32,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:15:32,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:15:32,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:15:32,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:15:40,418 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:15:40,419 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-09 08:15:40,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:15:40 BoogieIcfgContainer [2020-12-09 08:15:40,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:15:40,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:15:40,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:15:40,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:15:40,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:15:31" (1/3) ... [2020-12-09 08:15:40,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26863ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:15:40, skipping insertion in model container [2020-12-09 08:15:40,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:31" (2/3) ... [2020-12-09 08:15:40,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26863ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:15:40, skipping insertion in model container [2020-12-09 08:15:40,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:15:40" (3/3) ... [2020-12-09 08:15:40,429 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2020-12-09 08:15:40,438 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:15:40,441 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 08:15:40,448 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 08:15:40,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:15:40,465 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:15:40,465 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:15:40,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:15:40,465 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:15:40,465 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:15:40,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:15:40,466 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:15:40,475 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-12-09 08:15:40,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 08:15:40,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:40,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 08:15:40,479 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]=== [2020-12-09 08:15:40,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:40,482 INFO L82 PathProgramCache]: Analyzing trace with hash 189711168, now seen corresponding path program 1 times [2020-12-09 08:15:40,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:40,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160868331] [2020-12-09 08:15:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:40,546 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:15:40,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851452032] [2020-12-09 08:15:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/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 [2020-12-09 08:15:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:40,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 08:15:40,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:15:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:40,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:15:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:40,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160868331] [2020-12-09 08:15:40,603 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:15:40,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851452032] [2020-12-09 08:15:40,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:40,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 08:15:40,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314982891] [2020-12-09 08:15:40,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 08:15:40,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:40,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 08:15:40,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:15:40,618 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-12-09 08:15:40,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:40,629 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2020-12-09 08:15:40,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 08:15:40,630 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 08:15:40,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:40,636 INFO L225 Difference]: With dead ends: 61 [2020-12-09 08:15:40,636 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 08:15:40,638 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 [2020-12-09 08:15:40,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 08:15:40,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 08:15:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 08:15:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 08:15:40,667 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 5 [2020-12-09 08:15:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:40,668 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 08:15:40,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 08:15:40,668 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 08:15:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 08:15:40,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:40,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 08:15:40,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 08:15:40,869 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]=== [2020-12-09 08:15:40,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:40,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1480645745, now seen corresponding path program 1 times [2020-12-09 08:15:40,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:40,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068254706] [2020-12-09 08:15:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:40,875 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:15:40,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264948932] [2020-12-09 08:15:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/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 [2020-12-09 08:15:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:40,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:15:40,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:15:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:40,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:15:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:40,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068254706] [2020-12-09 08:15:40,940 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:15:40,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264948932] [2020-12-09 08:15:40,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:40,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 08:15:40,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257522830] [2020-12-09 08:15:40,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:15:40,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:40,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:15:40,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:15:40,943 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 3 states. [2020-12-09 08:15:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:40,969 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-12-09 08:15:40,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:15:40,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 08:15:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:40,970 INFO L225 Difference]: With dead ends: 57 [2020-12-09 08:15:40,970 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 08:15:40,971 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 [2020-12-09 08:15:40,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 08:15:40,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2020-12-09 08:15:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 08:15:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-12-09 08:15:40,975 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 6 [2020-12-09 08:15:40,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:40,975 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-12-09 08:15:40,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:15:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-12-09 08:15:40,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 08:15:40,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:40,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 08:15:41,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:15:41,178 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]=== [2020-12-09 08:15:41,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:41,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1480649719, now seen corresponding path program 1 times [2020-12-09 08:15:41,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:41,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765877852] [2020-12-09 08:15:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:41,193 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:15:41,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171936935] [2020-12-09 08:15:41,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/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 [2020-12-09 08:15:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:41,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 08:15:41,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:15:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:41,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:15:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:41,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765877852] [2020-12-09 08:15:41,327 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:15:41,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171936935] [2020-12-09 08:15:41,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:41,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 08:15:41,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822118603] [2020-12-09 08:15:41,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 08:15:41,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:41,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 08:15:41,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:15:41,328 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2020-12-09 08:15:45,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:45,505 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-12-09 08:15:45,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 08:15:45,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-12-09 08:15:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:45,507 INFO L225 Difference]: With dead ends: 99 [2020-12-09 08:15:45,508 INFO L226 Difference]: Without dead ends: 97 [2020-12-09 08:15:45,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-12-09 08:15:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-09 08:15:45,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 42. [2020-12-09 08:15:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-09 08:15:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-12-09 08:15:45,515 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2020-12-09 08:15:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:45,515 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-12-09 08:15:45,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 08:15:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-12-09 08:15:45,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:15:45,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:45,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:15:45,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:15:45,717 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]=== [2020-12-09 08:15:45,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:45,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1270362266, now seen corresponding path program 1 times [2020-12-09 08:15:45,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:45,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347686010] [2020-12-09 08:15:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:45,730 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:15:45,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373124491] [2020-12-09 08:15:45,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/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 [2020-12-09 08:15:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:45,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 08:15:45,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:15:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:45,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:15:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:45,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347686010] [2020-12-09 08:15:45,826 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:15:45,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373124491] [2020-12-09 08:15:45,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:45,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 08:15:45,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715570170] [2020-12-09 08:15:45,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:15:45,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:45,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:15:45,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:15:45,827 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 6 states. [2020-12-09 08:15:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:45,892 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-12-09 08:15:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:15:45,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-09 08:15:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:45,893 INFO L225 Difference]: With dead ends: 62 [2020-12-09 08:15:45,893 INFO L226 Difference]: Without dead ends: 60 [2020-12-09 08:15:45,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:15:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-09 08:15:45,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-12-09 08:15:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 08:15:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-12-09 08:15:45,900 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 8 [2020-12-09 08:15:45,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:45,900 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-12-09 08:15:45,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:15:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-12-09 08:15:45,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 08:15:45,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:45,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:15:46,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:15:46,102 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]=== [2020-12-09 08:15:46,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:46,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1047583197, now seen corresponding path program 1 times [2020-12-09 08:15:46,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:46,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172771456] [2020-12-09 08:15:46,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:46,114 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:15:46,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313177293] [2020-12-09 08:15:46,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/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 [2020-12-09 08:15:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:46,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 08:15:46,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:15:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:46,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:15:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:46,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172771456] [2020-12-09 08:15:46,377 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:15:46,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313177293] [2020-12-09 08:15:46,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:46,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 08:15:46,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610186337] [2020-12-09 08:15:46,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:15:46,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:46,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:15:46,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:15:46,379 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 6 states. [2020-12-09 08:15:46,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:46,460 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2020-12-09 08:15:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:15:46,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 08:15:46,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:46,461 INFO L225 Difference]: With dead ends: 60 [2020-12-09 08:15:46,462 INFO L226 Difference]: Without dead ends: 58 [2020-12-09 08:15:46,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:15:46,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-09 08:15:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-12-09 08:15:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 08:15:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-12-09 08:15:46,468 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 10 [2020-12-09 08:15:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:46,468 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-12-09 08:15:46,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:15:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-12-09 08:15:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 08:15:46,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:15:46,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:15:46,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:15:46,671 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:15:46,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:15:46,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1705263040, now seen corresponding path program 1 times [2020-12-09 08:15:46,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:15:46,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961522487] [2020-12-09 08:15:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:15:46,683 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:15:46,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272497666] [2020-12-09 08:15:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/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 [2020-12-09 08:15:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:15:46,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 08:15:46,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:15:48,770 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 08:15:52,844 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2020-12-09 08:15:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:52,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:15:52,883 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 2, 1] term [2020-12-09 08:15:52,883 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:15:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:15:52,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961522487] [2020-12-09 08:15:52,924 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:15:52,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272497666] [2020-12-09 08:15:52,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:15:52,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 08:15:52,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102549056] [2020-12-09 08:15:52,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 08:15:52,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:15:52,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 08:15:52,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:15:52,925 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 8 states. [2020-12-09 08:15:52,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:15:52,927 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2020-12-09 08:15:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 08:15:52,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-09 08:15:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:15:52,928 INFO L225 Difference]: With dead ends: 53 [2020-12-09 08:15:52,928 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 08:15:52,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:15:52,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 08:15:52,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 08:15:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 08:15:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 08:15:52,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-12-09 08:15:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:15:52,929 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 08:15:52,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 08:15:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 08:15:52,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 08:15:53,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:15:53,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 08:15:53,156 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 08:15:53,156 INFO L262 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-12-09 08:15:53,156 INFO L258 CegarLoopResult]: At program point L11-2(lines 10 16) the Hoare annotation is: false [2020-12-09 08:15:53,156 INFO L262 CegarLoopResult]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2020-12-09 08:15:53,156 INFO L258 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2020-12-09 08:15:53,156 INFO L262 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-12-09 08:15:53,156 INFO L258 CegarLoopResult]: At program point L11-8(lines 10 16) the Hoare annotation is: false [2020-12-09 08:15:53,156 INFO L262 CegarLoopResult]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2020-12-09 08:15:53,156 INFO L258 CegarLoopResult]: At program point L11-11(lines 52 53) the Hoare annotation is: false [2020-12-09 08:15:53,156 INFO L262 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-12-09 08:15:53,156 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L258 CegarLoopResult]: At program point L11-14(lines 10 16) the Hoare annotation is: false [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L265 CegarLoopResult]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L258 CegarLoopResult]: At program point L47-2(lines 47 56) the Hoare annotation is: false [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L258 CegarLoopResult]: At program point L41-1(lines 7 68) the Hoare annotation is: false [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2020-12-09 08:15:53,157 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 08:15:53,158 INFO L262 CegarLoopResult]: For program point L42(lines 42 43) no Hoare annotation was computed. [2020-12-09 08:15:53,158 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 08:15:53,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:15:53 BoogieIcfgContainer [2020-12-09 08:15:53,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:15:53,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:15:53,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:15:53,164 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:15:53,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:15:40" (3/4) ... [2020-12-09 08:15:53,167 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 08:15:53,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2020-12-09 08:15:53,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 08:15:53,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 08:15:53,175 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:15:53,209 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cef32874-57a2-4090-ae8c-71d302f2090e/bin/utaipan/witness.graphml [2020-12-09 08:15:53,209 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:15:53,210 INFO L168 Benchmark]: Toolchain (without parser) took 21485.74 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 57.8 MB in the beginning and 67.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:53,210 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 86.0 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:15:53,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.49 ms. Allocated memory is still 86.0 MB. Free memory was 57.8 MB in the beginning and 63.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:53,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.00 ms. Allocated memory is still 86.0 MB. Free memory was 63.1 MB in the beginning and 61.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:53,211 INFO L168 Benchmark]: Boogie Preprocessor took 21.18 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 60.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:53,212 INFO L168 Benchmark]: RCFGBuilder took 8457.72 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 60.0 MB in the beginning and 80.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:53,212 INFO L168 Benchmark]: TraceAbstraction took 12741.10 ms. Allocated memory is still 117.4 MB. Free memory was 80.2 MB in the beginning and 71.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:53,212 INFO L168 Benchmark]: Witness Printer took 45.48 ms. Allocated memory is still 117.4 MB. Free memory was 71.5 MB in the beginning and 67.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 08:15:53,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 86.0 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 180.49 ms. Allocated memory is still 86.0 MB. Free memory was 57.8 MB in the beginning and 63.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.00 ms. Allocated memory is still 86.0 MB. Free memory was 63.1 MB in the beginning and 61.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.18 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 60.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 8457.72 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 60.0 MB in the beginning and 80.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12741.10 ms. Allocated memory is still 117.4 MB. Free memory was 80.2 MB in the beginning and 71.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * Witness Printer took 45.48 ms. Allocated memory is still 117.4 MB. Free memory was 71.5 MB in the beginning and 67.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - 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: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: 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: 12.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 127 SDtfs, 166 SDslu, 157 SDs, 0 SdLazy, 167 SolverSat, 79 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 6.3s 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, 6 MinimizatonAttempts, 85 StatesRemovedByMinimization, 4 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, 0.1s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 6916 SizeOfPredicates, 43 NumberOfNonLiveVariables, 490 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...