./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i --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_67e9dca6-f294-4faa-bb78-51b874d5c3e9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/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 8c067034d8676e097c36fd744c405062d302fbf2 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:42:11,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:42:11,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:42:11,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:42:11,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:42:11,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:42:11,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:42:11,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:42:12,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:42:12,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:42:12,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:42:12,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:42:12,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:42:12,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:42:12,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:42:12,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:42:12,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:42:12,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:42:12,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:42:12,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:42:12,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:42:12,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:42:12,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:42:12,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:42:12,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:42:12,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:42:12,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:42:12,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:42:12,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:42:12,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:42:12,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:42:12,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:42:12,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:42:12,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:42:12,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:42:12,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:42:12,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:42:12,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:42:12,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:42:12,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:42:12,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:42:12,031 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 16:42:12,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:42:12,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:42:12,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:42:12,053 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:42:12,053 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:42:12,053 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:42:12,053 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:42:12,054 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:42:12,054 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:42:12,054 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:42:12,054 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:42:12,054 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:42:12,054 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:42:12,054 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:42:12,055 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:42:12,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:42:12,055 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:42:12,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:42:12,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:42:12,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:42:12,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:42:12,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:42:12,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:42:12,056 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:42:12,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:42:12,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:42:12,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:42:12,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:42:12,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:42:12,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:42:12,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:42:12,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:42:12,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:42:12,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:42:12,058 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:42:12,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:42:12,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:42:12,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:42:12,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:42:12,059 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_67e9dca6-f294-4faa-bb78-51b874d5c3e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c067034d8676e097c36fd744c405062d302fbf2 [2020-12-09 16:42:12,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:42:12,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:42:12,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:42:12,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:42:12,280 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:42:12,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i [2020-12-09 16:42:12,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/bin/utaipan/data/a325a666f/c0623d5f127c47f7a0ea489d6b1fdf84/FLAGc7bf59cbe [2020-12-09 16:42:12,682 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:42:12,682 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i [2020-12-09 16:42:12,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/bin/utaipan/data/a325a666f/c0623d5f127c47f7a0ea489d6b1fdf84/FLAGc7bf59cbe [2020-12-09 16:42:12,698 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/bin/utaipan/data/a325a666f/c0623d5f127c47f7a0ea489d6b1fdf84 [2020-12-09 16:42:12,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:42:12,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:42:12,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:42:12,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:42:12,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:42:12,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:42:12" (1/1) ... [2020-12-09 16:42:12,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da8a025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12, skipping insertion in model container [2020-12-09 16:42:12,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:42:12" (1/1) ... [2020-12-09 16:42:12,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:42:12,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:42:12,836 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_67e9dca6-f294-4faa-bb78-51b874d5c3e9/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i[951,964] [2020-12-09 16:42:12,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:42:12,854 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:42:12,863 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_67e9dca6-f294-4faa-bb78-51b874d5c3e9/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i[951,964] [2020-12-09 16:42:12,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:42:12,878 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:42:12,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12 WrapperNode [2020-12-09 16:42:12,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:42:12,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:42:12,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:42:12,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:42:12,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12" (1/1) ... [2020-12-09 16:42:12,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12" (1/1) ... [2020-12-09 16:42:12,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:42:12,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:42:12,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:42:12,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:42:12,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12" (1/1) ... [2020-12-09 16:42:12,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12" (1/1) ... [2020-12-09 16:42:12,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12" (1/1) ... [2020-12-09 16:42:12,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12" (1/1) ... [2020-12-09 16:42:12,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12" (1/1) ... [2020-12-09 16:42:12,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12" (1/1) ... [2020-12-09 16:42:12,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12" (1/1) ... [2020-12-09 16:42:12,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:42:12,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:42:12,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:42:12,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:42:12,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/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 16:42:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 16:42:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:42:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:42:13,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:42:13,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:42:13,177 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-09 16:42:13,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:42:13 BoogieIcfgContainer [2020-12-09 16:42:13,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:42:13,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:42:13,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:42:13,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:42:13,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:42:12" (1/3) ... [2020-12-09 16:42:13,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58adcf75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:42:13, skipping insertion in model container [2020-12-09 16:42:13,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:42:12" (2/3) ... [2020-12-09 16:42:13,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58adcf75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:42:13, skipping insertion in model container [2020-12-09 16:42:13,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:42:13" (3/3) ... [2020-12-09 16:42:13,184 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound1.i [2020-12-09 16:42:13,194 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:42:13,196 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 16:42:13,203 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 16:42:13,221 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:42:13,221 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:42:13,221 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:42:13,222 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:42:13,222 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:42:13,222 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:42:13,222 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:42:13,222 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:42:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-09 16:42:13,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 16:42:13,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:42:13,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 16:42:13,242 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:42:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:42:13,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1412902445, now seen corresponding path program 1 times [2020-12-09 16:42:13,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:42:13,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947771536] [2020-12-09 16:42:13,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:42:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:42:13,362 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 16:42:13,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947771536] [2020-12-09 16:42:13,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:42:13,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:42:13,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228180624] [2020-12-09 16:42:13,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 16:42:13,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:42:13,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 16:42:13,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 16:42:13,378 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-12-09 16:42:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:42:13,393 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-12-09 16:42:13,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 16:42:13,394 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 16:42:13,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:42:13,402 INFO L225 Difference]: With dead ends: 28 [2020-12-09 16:42:13,403 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 16:42:13,406 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 [2020-12-09 16:42:13,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 16:42:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-09 16:42:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 16:42:13,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-12-09 16:42:13,435 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2020-12-09 16:42:13,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:42:13,436 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-12-09 16:42:13,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 16:42:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-12-09 16:42:13,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 16:42:13,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:42:13,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:42:13,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 16:42:13,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:42:13,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:42:13,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1233561970, now seen corresponding path program 1 times [2020-12-09 16:42:13,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:42:13,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566269215] [2020-12-09 16:42:13,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:42:13,456 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:42:13,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358469031] [2020-12-09 16:42:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/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 16:42:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:42:13,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 16:42:13,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:42:13,552 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 16:42:13,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:42:13,570 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 16:42:13,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566269215] [2020-12-09 16:42:13,571 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:42:13,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358469031] [2020-12-09 16:42:13,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:42:13,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-09 16:42:13,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359195478] [2020-12-09 16:42:13,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:42:13,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:42:13,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:42:13,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:42:13,574 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 4 states. [2020-12-09 16:42:13,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:42:13,592 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-12-09 16:42:13,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 16:42:13,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 16:42:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:42:13,593 INFO L225 Difference]: With dead ends: 26 [2020-12-09 16:42:13,593 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 16:42:13,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:42:13,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 16:42:13,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 16:42:13,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 16:42:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-12-09 16:42:13,598 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 7 [2020-12-09 16:42:13,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:42:13,598 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-12-09 16:42:13,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:42:13,598 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-12-09 16:42:13,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 16:42:13,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:42:13,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:42:13,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 16:42:13,800 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:42:13,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:42:13,801 INFO L82 PathProgramCache]: Analyzing trace with hash 463079341, now seen corresponding path program 1 times [2020-12-09 16:42:13,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:42:13,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103248131] [2020-12-09 16:42:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:42:13,822 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:42:13,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052363414] [2020-12-09 16:42:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/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 16:42:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:42:13,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 16:42:13,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:42:13,895 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 16:42:13,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:42:13,911 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 16:42:13,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103248131] [2020-12-09 16:42:13,911 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:42:13,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052363414] [2020-12-09 16:42:13,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:42:13,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-12-09 16:42:13,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062720563] [2020-12-09 16:42:13,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:42:13,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:42:13,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:42:13,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:42:13,913 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 5 states. [2020-12-09 16:42:13,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:42:13,933 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-12-09 16:42:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 16:42:13,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 16:42:13,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:42:13,934 INFO L225 Difference]: With dead ends: 22 [2020-12-09 16:42:13,934 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 16:42:13,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:42:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 16:42:13,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 16:42:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 16:42:13,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-12-09 16:42:13,937 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2020-12-09 16:42:13,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:42:13,938 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-12-09 16:42:13,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:42:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-12-09 16:42:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 16:42:13,938 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:42:13,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:42:14,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:42:14,140 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:42:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:42:14,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1470520015, now seen corresponding path program 1 times [2020-12-09 16:42:14,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:42:14,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432734048] [2020-12-09 16:42:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:42:14,185 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:42:14,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658223930] [2020-12-09 16:42:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/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 16:42:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:42:14,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 16:42:14,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:42:14,262 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 16:42:14,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:42:14,302 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 16:42:14,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432734048] [2020-12-09 16:42:14,303 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:42:14,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658223930] [2020-12-09 16:42:14,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:42:14,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 16:42:14,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908996863] [2020-12-09 16:42:14,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 16:42:14,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:42:14,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 16:42:14,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-09 16:42:14,304 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 8 states. [2020-12-09 16:42:14,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:42:14,356 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-12-09 16:42:14,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 16:42:14,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-12-09 16:42:14,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:42:14,357 INFO L225 Difference]: With dead ends: 26 [2020-12-09 16:42:14,357 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 16:42:14,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-09 16:42:14,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 16:42:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 16:42:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 16:42:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-09 16:42:14,361 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9 [2020-12-09 16:42:14,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:42:14,361 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-09 16:42:14,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 16:42:14,361 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-09 16:42:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 16:42:14,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:42:14,362 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:42:14,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:42:14,564 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:42:14,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:42:14,565 INFO L82 PathProgramCache]: Analyzing trace with hash 195180174, now seen corresponding path program 1 times [2020-12-09 16:42:14,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:42:14,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033131338] [2020-12-09 16:42:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:42:14,604 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:42:14,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163495021] [2020-12-09 16:42:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/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 16:42:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:42:14,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 16:42:14,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:42:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:42:14,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:42:14,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:42:14,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033131338] [2020-12-09 16:42:14,668 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:42:14,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163495021] [2020-12-09 16:42:14,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1345800441] [2020-12-09 16:42:14,682 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 16:42:14,682 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:42:14,686 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:42:14,689 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:42:14,690 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:42:14,995 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 16:42:15,289 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2020-12-09 16:42:15,764 WARN L197 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-12-09 16:42:16,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 16:42:16,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4] total 11 [2020-12-09 16:42:16,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316486977] [2020-12-09 16:42:16,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 16:42:16,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:42:16,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 16:42:16,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-09 16:42:16,259 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 9 states. [2020-12-09 16:42:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:42:16,339 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-12-09 16:42:16,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 16:42:16,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-09 16:42:16,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:42:16,340 INFO L225 Difference]: With dead ends: 22 [2020-12-09 16:42:16,340 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 16:42:16,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-09 16:42:16,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 16:42:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 16:42:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 16:42:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-09 16:42:16,343 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-12-09 16:42:16,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:42:16,343 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-09 16:42:16,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 16:42:16,343 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-09 16:42:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 16:42:16,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:42:16,344 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:42:16,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:42:16,546 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:42:16,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:42:16,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1025582001, now seen corresponding path program 1 times [2020-12-09 16:42:16,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:42:16,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213187078] [2020-12-09 16:42:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:42:16,583 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 16:42:16,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434407631] [2020-12-09 16:42:16,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/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 16:42:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:42:16,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 16:42:16,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:42:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 16:42:16,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 16:42:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 16:42:16,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213187078] [2020-12-09 16:42:16,653 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 16:42:16,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434407631] [2020-12-09 16:42:16,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1835620326] [2020-12-09 16:42:16,655 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 16:42:16,655 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 16:42:16,655 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 16:42:16,655 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 16:42:16,655 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 16:42:16,811 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 16:42:17,039 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2020-12-09 16:42:17,441 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-12-09 16:42:17,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 16:42:17,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4] total 11 [2020-12-09 16:42:17,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129240814] [2020-12-09 16:42:17,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 16:42:17,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:42:17,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 16:42:17,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-12-09 16:42:17,891 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2020-12-09 16:42:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:42:17,938 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-09 16:42:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 16:42:17,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-09 16:42:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:42:17,938 INFO L225 Difference]: With dead ends: 16 [2020-12-09 16:42:17,939 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 16:42:17,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-12-09 16:42:17,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 16:42:17,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 16:42:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 16:42:17,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 16:42:17,939 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 16:42:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:42:17,939 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 16:42:17,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 16:42:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 16:42:17,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 16:42:18,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 16:42:18,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 16:42:18,396 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-12-09 16:42:18,399 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-09 16:42:18,400 INFO L262 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-12-09 16:42:18,400 INFO L258 CegarLoopResult]: At program point L19-2(line 40) the Hoare annotation is: false [2020-12-09 16:42:18,400 INFO L262 CegarLoopResult]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2020-12-09 16:42:18,400 INFO L265 CegarLoopResult]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2020-12-09 16:42:18,400 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 16:42:18,400 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-09 16:42:18,400 INFO L262 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-12-09 16:42:18,400 INFO L262 CegarLoopResult]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-12-09 16:42:18,400 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 16:42:18,400 INFO L262 CegarLoopResult]: For program point L38(lines 38 47) no Hoare annotation was computed. [2020-12-09 16:42:18,400 INFO L262 CegarLoopResult]: For program point L38-2(lines 38 47) no Hoare annotation was computed. [2020-12-09 16:42:18,400 INFO L262 CegarLoopResult]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2020-12-09 16:42:18,400 INFO L258 CegarLoopResult]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse17 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= |#t~string1.offset| 0)) (.cse1 (= ULTIMATE.start_main_~B~0 1)) (.cse2 (= (select |#length| |#t~string1.base|) 10)) (.cse3 (= |#NULL.base| 0)) (.cse4 (= (select .cse17 |#t~string0.offset|) 48)) (.cse5 (= (select .cse17 (+ |#t~string0.offset| 1)) 0)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= 2 (select |#length| |#t~string0.base|))) (.cse8 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse9 (= (select |#valid| |#t~string0.base|) 1)) (.cse10 (< 0 |#StackHeapBarrier|)) (.cse11 (= ULTIMATE.start_main_~q~0 0)) (.cse12 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse13 (= |#NULL.offset| 0)) (.cse14 (= (select |#valid| |#t~string1.base|) 1)) (.cse15 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse16 (= |#t~string0.offset| 0))) (or (and .cse0 .cse1 (= ~counter~0 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~b~0) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16) (and .cse0 .cse1 .cse2 (<= (mod ULTIMATE.start_main_~B~0 4294967296) (mod ULTIMATE.start_main_~r~0 4294967296)) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= ~counter~0 1) .cse10 .cse11 .cse12 .cse13 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~b~0) .cse14 .cse15 .cse16)))) [2020-12-09 16:42:18,401 INFO L262 CegarLoopResult]: For program point L43-2(lines 26 50) no Hoare annotation was computed. [2020-12-09 16:42:18,401 INFO L262 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-12-09 16:42:18,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:42:18 BoogieIcfgContainer [2020-12-09 16:42:18,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:42:18,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:42:18,417 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:42:18,417 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:42:18,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:42:13" (3/4) ... [2020-12-09 16:42:18,419 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 16:42:18,425 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 16:42:18,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 16:42:18,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 16:42:18,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 16:42:18,454 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_67e9dca6-f294-4faa-bb78-51b874d5c3e9/bin/utaipan/witness.graphml [2020-12-09 16:42:18,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:42:18,455 INFO L168 Benchmark]: Toolchain (without parser) took 5753.15 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 154.5 MB in the end (delta: -51.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-12-09 16:42:18,456 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 138.4 MB. Free memory was 119.0 MB in the beginning and 118.9 MB in the end (delta: 147.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:42:18,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.19 ms. Allocated memory is still 138.4 MB. Free memory was 102.6 MB in the beginning and 113.6 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 16:42:18,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.62 ms. Allocated memory is still 138.4 MB. Free memory was 113.6 MB in the beginning and 112.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:42:18,457 INFO L168 Benchmark]: Boogie Preprocessor took 21.01 ms. Allocated memory is still 138.4 MB. Free memory was 112.3 MB in the beginning and 111.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:42:18,457 INFO L168 Benchmark]: RCFGBuilder took 245.81 ms. Allocated memory is still 138.4 MB. Free memory was 111.2 MB in the beginning and 94.7 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 16:42:18,457 INFO L168 Benchmark]: TraceAbstraction took 5237.19 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 94.7 MB in the beginning and 157.7 MB in the end (delta: -62.9 MB). Peak memory consumption was 97.9 MB. Max. memory is 16.1 GB. [2020-12-09 16:42:18,458 INFO L168 Benchmark]: Witness Printer took 37.84 ms. Allocated memory is still 201.3 MB. Free memory was 157.7 MB in the beginning and 154.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:42:18,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 138.4 MB. Free memory was 119.0 MB in the beginning and 118.9 MB in the end (delta: 147.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 175.19 ms. Allocated memory is still 138.4 MB. Free memory was 102.6 MB in the beginning and 113.6 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.62 ms. Allocated memory is still 138.4 MB. Free memory was 113.6 MB in the beginning and 112.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.01 ms. Allocated memory is still 138.4 MB. Free memory was 112.3 MB in the beginning and 111.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 245.81 ms. Allocated memory is still 138.4 MB. Free memory was 111.2 MB in the beginning and 94.7 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5237.19 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 94.7 MB in the beginning and 157.7 MB in the end (delta: -62.9 MB). Peak memory consumption was 97.9 MB. Max. memory is 16.1 GB. * Witness Printer took 37.84 ms. Allocated memory is still 201.3 MB. Free memory was 157.7 MB in the beginning and 154.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: 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 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((((((((((("divbin2.c" == 0 && B == 1) && counter == 0) && unknown-#length-unknown["divbin2.c"] == 10) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && 2 == unknown-#length-unknown["0"]) && unknown-#StackHeapBarrier-unknown < "0") && B == b) && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && q == 0) && unknown-#StackHeapBarrier-unknown < "divbin2.c") && #NULL == 0) && \valid["divbin2.c"] == 1) && A == r) && "0" == 0) || ((((((((((((((((((("divbin2.c" == 0 && B == 1) && unknown-#length-unknown["divbin2.c"] == 10) && B % 4294967296 <= r % 4294967296) && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && 2 == unknown-#length-unknown["0"]) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && counter == 1) && 0 < unknown-#StackHeapBarrier-unknown) && q == 0) && unknown-#StackHeapBarrier-unknown < "divbin2.c") && #NULL == 0) && B * 2 == b) && \valid["divbin2.c"] == 1) && A == r) && "0" == 0) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 34 SDslu, 79 SDs, 0 SdLazy, 142 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 168 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 362 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 3093 SizeOfPredicates, 9 NumberOfNonLiveVariables, 295 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 28/32 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: OVERALL_TIME[ms]: 469, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 21, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 26, TOOLS_POST_TIME[ms]: 185, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 26, TOOLS_QUANTIFIERELIM_TIME[ms]: 177, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 100, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 50, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME[ms]: 219, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 21, DOMAIN_ISBOTTOM_TIME[ms]: 27, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 16, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 16, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 206, DAG_COMPRESSION_RETAINED_NODES: 60, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...