./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.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_a53136ad-8ad3-4764-8080-f18a10bb6069/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/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 5826109f3da002ef221ffbad3510db88b48ab8f7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:38:26,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:38:26,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:38:26,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:38:26,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:38:26,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:38:26,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:38:26,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:38:26,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:38:26,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:38:26,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:38:26,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:38:26,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:38:26,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:38:26,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:38:26,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:38:26,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:38:26,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:38:26,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:38:26,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:38:26,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:38:26,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:38:26,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:38:26,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:38:26,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:38:26,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:38:26,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:38:26,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:38:26,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:38:26,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:38:26,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:38:26,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:38:26,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:38:26,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:38:26,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:38:26,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:38:26,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:38:26,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:38:26,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:38:26,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:38:26,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:38:26,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:38:26,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:38:26,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:38:26,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:38:26,923 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:38:26,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:38:26,924 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:38:26,924 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:38:26,924 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:38:26,925 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:38:26,925 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:38:26,925 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:38:26,925 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:38:26,926 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:38:26,926 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:38:26,926 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:38:26,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:38:26,927 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:38:26,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:38:26,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:38:26,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:38:26,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:38:26,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:38:26,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:38:26,929 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:38:26,929 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:38:26,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:38:26,930 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:38:26,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:38:26,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:38:26,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:38:26,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:38:26,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:38:26,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:38:26,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:38:26,932 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:38:26,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:38:26,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:38:26,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:38:26,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:38:26,933 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_a53136ad-8ad3-4764-8080-f18a10bb6069/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5826109f3da002ef221ffbad3510db88b48ab8f7 [2020-12-03 12:38:27,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:38:27,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:38:27,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:38:27,195 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:38:27,196 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:38:27,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/bin/utaipan/../../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-12-03 12:38:27,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/bin/utaipan/data/c99213866/66aa7bc789924c309b58e5e145141624/FLAG8ffd29b48 [2020-12-03 12:38:27,737 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:38:27,737 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-12-03 12:38:27,752 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/bin/utaipan/data/c99213866/66aa7bc789924c309b58e5e145141624/FLAG8ffd29b48 [2020-12-03 12:38:28,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/bin/utaipan/data/c99213866/66aa7bc789924c309b58e5e145141624 [2020-12-03 12:38:28,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:38:28,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:38:28,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:38:28,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:38:28,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:38:28,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:38:28" (1/1) ... [2020-12-03 12:38:28,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bb8aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28, skipping insertion in model container [2020-12-03 12:38:28,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:38:28" (1/1) ... [2020-12-03 12:38:28,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:38:28,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:38:28,310 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_a53136ad-8ad3-4764-8080-f18a10bb6069/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2020-12-03 12:38:28,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:38:28,358 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:38:28,372 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_a53136ad-8ad3-4764-8080-f18a10bb6069/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2020-12-03 12:38:28,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:38:28,415 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:38:28,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28 WrapperNode [2020-12-03 12:38:28,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:38:28,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:38:28,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:38:28,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:38:28,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28" (1/1) ... [2020-12-03 12:38:28,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28" (1/1) ... [2020-12-03 12:38:28,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:38:28,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:38:28,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:38:28,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:38:28,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28" (1/1) ... [2020-12-03 12:38:28,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28" (1/1) ... [2020-12-03 12:38:28,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28" (1/1) ... [2020-12-03 12:38:28,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28" (1/1) ... [2020-12-03 12:38:28,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28" (1/1) ... [2020-12-03 12:38:28,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28" (1/1) ... [2020-12-03 12:38:28,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28" (1/1) ... [2020-12-03 12:38:28,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:38:28,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:38:28,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:38:28,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:38:28,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/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 [2020-12-03 12:38:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:38:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-03 12:38:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-03 12:38:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:38:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-12-03 12:38:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:38:28,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:38:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 12:38:29,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:38:29,293 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-03 12:38:29,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:38:29 BoogieIcfgContainer [2020-12-03 12:38:29,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:38:29,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:38:29,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:38:29,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:38:29,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:38:28" (1/3) ... [2020-12-03 12:38:29,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f7d55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:38:29, skipping insertion in model container [2020-12-03 12:38:29,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:38:28" (2/3) ... [2020-12-03 12:38:29,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f7d55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:38:29, skipping insertion in model container [2020-12-03 12:38:29,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:38:29" (3/3) ... [2020-12-03 12:38:29,308 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-12-03 12:38:29,325 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:38:29,328 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:38:29,338 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:38:29,372 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:38:29,372 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:38:29,372 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:38:29,372 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:38:29,372 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:38:29,373 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:38:29,373 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:38:29,373 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:38:29,387 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-12-03 12:38:29,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-03 12:38:29,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:38:29,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:38:29,399 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:38:29,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:38:29,405 INFO L82 PathProgramCache]: Analyzing trace with hash -804738571, now seen corresponding path program 1 times [2020-12-03 12:38:29,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:38:29,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629639399] [2020-12-03 12:38:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:38:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:38:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:38:29,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629639399] [2020-12-03 12:38:29,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:38:29,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:38:29,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522117051] [2020-12-03 12:38:29,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:38:29,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:38:29,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:38:29,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:38:29,617 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-12-03 12:38:29,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:38:29,641 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2020-12-03 12:38:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:38:29,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-03 12:38:29,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:38:29,666 INFO L225 Difference]: With dead ends: 43 [2020-12-03 12:38:29,667 INFO L226 Difference]: Without dead ends: 20 [2020-12-03 12:38:29,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:38:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-03 12:38:29,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-03 12:38:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-03 12:38:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-12-03 12:38:29,701 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2020-12-03 12:38:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:38:29,702 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-12-03 12:38:29,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:38:29,702 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-12-03 12:38:29,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-03 12:38:29,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:38:29,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:38:29,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:38:29,704 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:38:29,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:38:29,704 INFO L82 PathProgramCache]: Analyzing trace with hash 943623498, now seen corresponding path program 1 times [2020-12-03 12:38:29,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:38:29,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699838505] [2020-12-03 12:38:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:38:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:38:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:38:29,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699838505] [2020-12-03 12:38:29,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405603976] [2020-12-03 12:38:29,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/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 [2020-12-03 12:38:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:38:29,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:38:29,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:38:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:38:29,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:38:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:38:29,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [571355089] [2020-12-03 12:38:29,946 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2020-12-03 12:38:29,947 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:38:29,952 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:38:29,957 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:38:29,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:38:30,678 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:38:30,865 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-03 12:38:31,019 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-03 12:38:31,222 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-12-03 12:38:31,445 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-12-03 12:38:31,744 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2020-12-03 12:38:32,052 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2020-12-03 12:38:32,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:38:32,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [3, 3, 3] total 13 [2020-12-03 12:38:32,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010934299] [2020-12-03 12:38:32,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-03 12:38:32,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:38:32,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-03 12:38:32,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-12-03 12:38:32,125 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 9 states. [2020-12-03 12:38:32,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:38:32,306 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-12-03 12:38:32,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-03 12:38:32,307 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-12-03 12:38:32,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:38:32,310 INFO L225 Difference]: With dead ends: 46 [2020-12-03 12:38:32,311 INFO L226 Difference]: Without dead ends: 23 [2020-12-03 12:38:32,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-12-03 12:38:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-03 12:38:32,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-12-03 12:38:32,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-03 12:38:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-12-03 12:38:32,325 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2020-12-03 12:38:32,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:38:32,332 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-12-03 12:38:32,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-03 12:38:32,333 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-12-03 12:38:32,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-03 12:38:32,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:38:32,333 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:38:32,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-03 12:38:32,534 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:38:32,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:38:32,535 INFO L82 PathProgramCache]: Analyzing trace with hash -2038619526, now seen corresponding path program 1 times [2020-12-03 12:38:32,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:38:32,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320923768] [2020-12-03 12:38:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:38:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:38:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:38:32,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320923768] [2020-12-03 12:38:32,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157403935] [2020-12-03 12:38:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/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 [2020-12-03 12:38:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:38:32,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:38:32,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:38:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:38:32,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:38:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:38:32,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [956868413] [2020-12-03 12:38:32,723 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2020-12-03 12:38:32,723 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:38:32,723 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:38:32,724 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:38:32,724 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:38:33,402 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:38:33,599 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-03 12:38:34,133 WARN L197 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-12-03 12:38:34,312 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-12-03 12:38:34,496 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-12-03 12:38:34,756 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-12-03 12:38:34,920 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-03 12:38:35,248 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-12-03 12:38:35,476 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-12-03 12:38:35,663 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-03 12:38:36,030 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-12-03 12:38:36,559 WARN L197 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 107 [2020-12-03 12:38:36,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:38:36,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [3, 3, 3] total 21 [2020-12-03 12:38:36,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061795688] [2020-12-03 12:38:36,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-03 12:38:36,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:38:36,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-03 12:38:36,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-12-03 12:38:36,563 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 17 states. [2020-12-03 12:38:36,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:38:36,767 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-12-03 12:38:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-03 12:38:36,768 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-12-03 12:38:36,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:38:36,769 INFO L225 Difference]: With dead ends: 38 [2020-12-03 12:38:36,769 INFO L226 Difference]: Without dead ends: 36 [2020-12-03 12:38:36,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-12-03 12:38:36,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-03 12:38:36,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-12-03 12:38:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-03 12:38:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-12-03 12:38:36,777 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 20 [2020-12-03 12:38:36,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:38:36,777 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-12-03 12:38:36,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-03 12:38:36,777 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-12-03 12:38:36,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-03 12:38:36,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:38:36,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:38:37,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:38:37,006 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:38:37,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:38:37,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1680854923, now seen corresponding path program 1 times [2020-12-03 12:38:37,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:38:37,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885413520] [2020-12-03 12:38:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:38:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:38:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:38:37,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885413520] [2020-12-03 12:38:37,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528059086] [2020-12-03 12:38:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/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 [2020-12-03 12:38:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:38:37,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:38:37,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:38:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:38:37,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:38:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:38:37,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1881902160] [2020-12-03 12:38:37,203 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2020-12-03 12:38:37,203 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:38:37,203 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:38:37,203 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:38:37,204 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:38:37,998 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:38:38,188 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-03 12:38:38,739 WARN L197 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-12-03 12:38:38,916 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-12-03 12:38:39,108 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-12-03 12:38:39,331 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-12-03 12:38:39,491 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-03 12:38:39,761 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-12-03 12:38:39,897 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-12-03 12:38:40,051 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-03 12:38:40,378 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-12-03 12:38:40,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:38:40,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [3, 3, 3] total 19 [2020-12-03 12:38:40,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804647282] [2020-12-03 12:38:40,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-03 12:38:40,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:38:40,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-03 12:38:40,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-12-03 12:38:40,382 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 15 states. [2020-12-03 12:38:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:38:40,559 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-12-03 12:38:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-03 12:38:40,560 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-12-03 12:38:40,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:38:40,561 INFO L225 Difference]: With dead ends: 47 [2020-12-03 12:38:40,561 INFO L226 Difference]: Without dead ends: 45 [2020-12-03 12:38:40,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-12-03 12:38:40,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-03 12:38:40,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2020-12-03 12:38:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-03 12:38:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-12-03 12:38:40,570 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 22 [2020-12-03 12:38:40,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:38:40,571 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-12-03 12:38:40,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-03 12:38:40,571 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-12-03 12:38:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-03 12:38:40,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:38:40,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:38:40,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-12-03 12:38:40,778 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:38:40,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:38:40,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1045014988, now seen corresponding path program 1 times [2020-12-03 12:38:40,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:38:40,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845248189] [2020-12-03 12:38:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:38:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:38:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:38:40,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845248189] [2020-12-03 12:38:40,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868348555] [2020-12-03 12:38:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/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 [2020-12-03 12:38:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:38:40,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:38:40,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:38:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:38:40,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:38:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-03 12:38:40,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [525017058] [2020-12-03 12:38:40,960 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2020-12-03 12:38:40,960 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:38:40,961 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:38:40,961 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:38:40,961 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:38:41,614 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:38:41,820 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-03 12:38:42,248 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-12-03 12:38:42,405 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-12-03 12:38:42,562 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-12-03 12:38:42,969 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-12-03 12:38:43,153 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-12-03 12:38:43,419 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-12-03 12:38:43,576 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-12-03 12:38:43,958 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-12-03 12:38:44,454 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 107 [2020-12-03 12:38:44,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:38:44,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [3, 3, 3] total 20 [2020-12-03 12:38:44,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234822693] [2020-12-03 12:38:44,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-03 12:38:44,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:38:44,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-03 12:38:44,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-12-03 12:38:44,457 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 16 states. [2020-12-03 12:38:44,676 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-03 12:38:44,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:38:44,840 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-12-03 12:38:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-03 12:38:44,841 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-12-03 12:38:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:38:44,842 INFO L225 Difference]: With dead ends: 53 [2020-12-03 12:38:44,842 INFO L226 Difference]: Without dead ends: 51 [2020-12-03 12:38:44,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-12-03 12:38:44,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-03 12:38:44,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2020-12-03 12:38:44,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-03 12:38:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-12-03 12:38:44,859 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 22 [2020-12-03 12:38:44,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:38:44,859 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-12-03 12:38:44,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-03 12:38:44,860 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-12-03 12:38:44,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-03 12:38:44,861 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:38:44,861 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:38:45,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:38:45,070 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:38:45,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:38:45,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1526188637, now seen corresponding path program 1 times [2020-12-03 12:38:45,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:38:45,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222908377] [2020-12-03 12:38:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:38:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:38:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-03 12:38:45,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222908377] [2020-12-03 12:38:45,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484045122] [2020-12-03 12:38:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/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 [2020-12-03 12:38:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:38:45,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 12:38:45,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:38:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-03 12:38:45,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:38:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-03 12:38:45,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [650158950] [2020-12-03 12:38:45,317 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2020-12-03 12:38:45,317 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:38:45,318 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:38:45,318 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:38:45,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:38:46,083 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:38:46,272 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-03 12:38:46,718 WARN L197 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-12-03 12:38:46,859 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-12-03 12:38:47,044 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-12-03 12:38:47,388 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-12-03 12:38:47,529 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-12-03 12:38:47,692 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-12-03 12:38:47,877 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-03 12:38:48,010 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-12-03 12:38:48,256 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-12-03 12:38:48,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:38:48,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [3, 3, 3] total 18 [2020-12-03 12:38:48,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051991167] [2020-12-03 12:38:48,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-03 12:38:48,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:38:48,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-03 12:38:48,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-12-03 12:38:48,260 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 14 states. [2020-12-03 12:38:48,537 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-03 12:38:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:38:48,660 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-12-03 12:38:48,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-03 12:38:48,661 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2020-12-03 12:38:48,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:38:48,661 INFO L225 Difference]: With dead ends: 40 [2020-12-03 12:38:48,661 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:38:48,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-12-03 12:38:48,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:38:48,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:38:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:38:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:38:48,663 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-12-03 12:38:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:38:48,663 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:38:48,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-03 12:38:48,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:38:48,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:38:48,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:38:48,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:38:49,411 WARN L197 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-12-03 12:38:49,727 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 86 [2020-12-03 12:38:49,907 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 56 [2020-12-03 12:38:50,015 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2020-12-03 12:38:50,126 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-03 12:38:50,128 INFO L265 CegarLoopResult]: At program point L85(lines 58 86) the Hoare annotation is: true [2020-12-03 12:38:50,128 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:38:50,128 INFO L262 CegarLoopResult]: For program point L70-6(line 70) no Hoare annotation was computed. [2020-12-03 12:38:50,129 INFO L262 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-12-03 12:38:50,129 INFO L258 CegarLoopResult]: At program point L70-8(line 70) the Hoare annotation is: (and (<= 0 |#t~string0.base|) (<= 0 ULTIMATE.start_parse_expression_list_~str.offset) (<= 0 ULTIMATE.start_parse_expression_list_~str.base) (<= ULTIMATE.start_parse_expression_list_~str.offset 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.offset|) (<= |ULTIMATE.start_parse_expression_list_~#str2~0.offset| 0) (<= 0 ULTIMATE.start_parse_expression_list_~i~0) (<= 0 |#t~string1.base|) (= |ULTIMATE.start_main_~#A~0.offset| 0) (<= |#t~string1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.base|) (<= 0 ULTIMATE.start_parse_expression_list_~start~0) (<= |ULTIMATE.start_parse_expression_list_#in~str.offset| 0) (<= 8 ULTIMATE.start_main_~i~1) (<= 0 |#t~string1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0.offset|) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0.base|) (= |#t~string0.offset| 0) (<= 0 |#StackHeapBarrier|)) [2020-12-03 12:38:50,129 INFO L262 CegarLoopResult]: For program point L70-9(line 70) no Hoare annotation was computed. [2020-12-03 12:38:50,129 INFO L262 CegarLoopResult]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2020-12-03 12:38:50,129 INFO L262 CegarLoopResult]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2020-12-03 12:38:50,129 INFO L258 CegarLoopResult]: At program point L63-4(lines 63 84) the Hoare annotation is: (let ((.cse0 (<= 0 |#t~string0.base|)) (.cse2 (= |#NULL.base| 0)) (.cse3 (= |ULTIMATE.start_parse_expression_list_~#str2~0.offset| 0)) (.cse4 (<= 0 |#t~string1.base|)) (.cse5 (= |ULTIMATE.start_main_~#A~0.offset| 0)) (.cse6 (<= 0 |ULTIMATE.start_main_~#A~0.base|)) (.cse7 (<= 8 ULTIMATE.start_main_~i~1)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (= |#t~string0.offset| 0)) (.cse10 (<= 0 |#StackHeapBarrier|))) (or (and .cse0 (<= 0 ULTIMATE.start_parse_expression_list_~str.offset) (<= 0 ULTIMATE.start_parse_expression_list_~str.base) (let ((.cse1 (select |#memory_int| ULTIMATE.start_parse_expression_list_~str.base))) (or (= 34 (select .cse1 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0 1))) (not (= 34 (select .cse1 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0)))) (<= ULTIMATE.start_parse_expression_list_~j~0 0))) (<= ULTIMATE.start_parse_expression_list_~str.offset 0) .cse2 (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.offset|) (<= 0 ULTIMATE.start_parse_expression_list_~i~0) .cse3 .cse4 .cse5 (<= |#t~string1.offset| 0) .cse6 (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.base|) (<= 0 ULTIMATE.start_parse_expression_list_~start~0) (<= |ULTIMATE.start_parse_expression_list_#in~str.offset| 0) .cse7 (<= 0 |#t~string1.offset|) .cse8 (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0.base|) .cse9 .cse10) (and (= |#t~string1.offset| 0) .cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0.base|) (+ |ULTIMATE.start_main_~#A~0.offset| 8)) 0) (= |ULTIMATE.start_parse_expression_list_#in~str.offset| |ULTIMATE.start_main_~#A~0.offset|) .cse2 (= (select |#length| |ULTIMATE.start_parse_expression_list_~#str2~0.base|) 2) (= ULTIMATE.start_parse_expression_list_~str.offset |ULTIMATE.start_parse_expression_list_#in~str.offset|) (= |ULTIMATE.start_parse_expression_list_#in~str.base| |ULTIMATE.start_main_~#A~0.base|) (not (= ULTIMATE.start_parse_expression_list_~str.base 0)) (= ULTIMATE.start_parse_expression_list_~start~0 0) (= ULTIMATE.start_parse_expression_list_~str.base |ULTIMATE.start_parse_expression_list_#in~str.base|) .cse3 .cse4 .cse5 (= (+ ULTIMATE.start_parse_expression_list_~i~0 1) 0) .cse6 (< |#StackHeapBarrier| |ULTIMATE.start_parse_expression_list_~#str2~0.base|) (= (+ ULTIMATE.start_parse_expression_list_~j~0 1) 0) .cse7 (= (select |#valid| |ULTIMATE.start_parse_expression_list_~#str2~0.base|) 1) .cse8 .cse9 .cse10))) [2020-12-03 12:38:50,129 INFO L262 CegarLoopResult]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2020-12-03 12:38:50,129 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-03 12:38:50,130 INFO L258 CegarLoopResult]: At program point L15-2(lines 14 19) the Hoare annotation is: (let ((.cse1 (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1)))) (and (<= 0 ULTIMATE.start_parse_expression_list_~str.offset) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_r_strncpy_~dest.offset |ULTIMATE.start_r_strncpy_#in~dest.offset|) (let ((.cse0 (select |#memory_int| ULTIMATE.start_parse_expression_list_~str.base))) (or (= 34 (select .cse0 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0 1))) (not (= 34 (select .cse0 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0)))) (<= ULTIMATE.start_parse_expression_list_~j~0 0))) .cse1 (<= ULTIMATE.start_parse_expression_list_~start~0 ULTIMATE.start_parse_expression_list_~j~0) (= |ULTIMATE.start_parse_expression_list_~#str2~0.offset| |ULTIMATE.start_r_strncpy_#in~dest.offset|) (= (+ ULTIMATE.start_parse_expression_list_~start~0 |ULTIMATE.start_r_strncpy_#in~n|) (+ ULTIMATE.start_parse_expression_list_~j~0 1)) (<= 0 ULTIMATE.start_parse_expression_list_~i~0) (= |ULTIMATE.start_parse_expression_list_~#str2~0.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0.base|) (= (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~start~0) |ULTIMATE.start_r_strncpy_#in~src.offset|) (<= 0 ULTIMATE.start_parse_expression_list_~start~0) (= ULTIMATE.start_parse_expression_list_~str.base |ULTIMATE.start_r_strncpy_#in~src.base|) (<= 8 ULTIMATE.start_main_~i~1) (= |#NULL.offset| 0) (= (ite .cse1 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond|) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0.base|) (<= 0 |#StackHeapBarrier|) (= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (= ULTIMATE.start_r_strncpy_~src.offset |ULTIMATE.start_r_strncpy_#in~src.offset|) (<= 0 ULTIMATE.start_parse_expression_list_~str.base) (<= ULTIMATE.start_parse_expression_list_~str.offset 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.offset|) (<= 0 |#t~string1.base|) (= ULTIMATE.start_r_strncpy_~dest.base |ULTIMATE.start_r_strncpy_#in~dest.base|) (= |ULTIMATE.start_main_~#A~0.offset| 0) (= ULTIMATE.start_r_strncpy_~n |ULTIMATE.start_r_strncpy_#in~n|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.base|) (= ULTIMATE.start_r_strncpy_~src.base |ULTIMATE.start_r_strncpy_#in~src.base|) (= |ULTIMATE.start_parse_expression_list_~#str2~0.base| |ULTIMATE.start_r_strncpy_#in~dest.base|) (<= |ULTIMATE.start_parse_expression_list_#in~str.offset| 0) (= |#t~string0.offset| 0))) [2020-12-03 12:38:50,130 INFO L258 CegarLoopResult]: At program point L73(lines 73 75) the Hoare annotation is: (and (= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (<= 0 ULTIMATE.start_parse_expression_list_~str.offset) (<= 0 ULTIMATE.start_parse_expression_list_~str.base) (let ((.cse0 (select |#memory_int| ULTIMATE.start_parse_expression_list_~str.base))) (or (= 34 (select .cse0 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0 1))) (not (= 34 (select .cse0 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0)))) (<= ULTIMATE.start_parse_expression_list_~j~0 0))) (<= ULTIMATE.start_parse_expression_list_~str.offset 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.offset|) (<= ULTIMATE.start_parse_expression_list_~start~0 ULTIMATE.start_parse_expression_list_~j~0) (<= 0 ULTIMATE.start_parse_expression_list_~i~0) (= |ULTIMATE.start_parse_expression_list_~#str2~0.offset| 0) (<= 0 |#t~string1.base|) (= |ULTIMATE.start_main_~#A~0.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.base|) (<= 0 ULTIMATE.start_parse_expression_list_~start~0) (<= |ULTIMATE.start_parse_expression_list_#in~str.offset| 0) (<= 8 ULTIMATE.start_main_~i~1) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0.base|) (= |#t~string0.offset| 0) (<= 0 |#StackHeapBarrier|)) [2020-12-03 12:38:50,130 INFO L262 CegarLoopResult]: For program point L65(lines 65 83) no Hoare annotation was computed. [2020-12-03 12:38:50,130 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-12-03 12:38:50,130 INFO L258 CegarLoopResult]: At program point L90-3(lines 90 92) the Hoare annotation is: (and (<= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (<= 0 |ULTIMATE.start_main_~#A~0.base|) (= |#NULL.base| 0) (<= 0 |#t~string1.offset|) (= |#NULL.offset| 0) (<= 0 ULTIMATE.start_main_~i~1) (= |#t~string0.offset| 0) (<= 0 |#t~string1.base|) (= |ULTIMATE.start_main_~#A~0.offset| 0) (<= 0 |#StackHeapBarrier|)) [2020-12-03 12:38:50,130 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-03 12:38:50,130 INFO L262 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-12-03 12:38:50,130 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:38:50,130 INFO L262 CegarLoopResult]: For program point L67-3(line 67) no Hoare annotation was computed. [2020-12-03 12:38:50,130 INFO L258 CegarLoopResult]: At program point L67-5(line 67) the Hoare annotation is: (and (<= 0 |#t~string0.base|) (<= 0 ULTIMATE.start_parse_expression_list_~str.offset) (<= 0 ULTIMATE.start_parse_expression_list_~str.base) (let ((.cse0 (select |#memory_int| ULTIMATE.start_parse_expression_list_~str.base))) (or (= 34 (select .cse0 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0 1))) (not (= 34 (select .cse0 (+ ULTIMATE.start_parse_expression_list_~str.offset ULTIMATE.start_parse_expression_list_~j~0)))) (<= ULTIMATE.start_parse_expression_list_~j~0 0))) (<= ULTIMATE.start_parse_expression_list_~str.offset 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.offset|) (<= 0 ULTIMATE.start_parse_expression_list_~i~0) (= |ULTIMATE.start_parse_expression_list_~#str2~0.offset| 0) (<= 0 |#t~string1.base|) (= |ULTIMATE.start_main_~#A~0.offset| 0) (<= |#t~string1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0.base|) (<= 0 |ULTIMATE.start_parse_expression_list_#in~str.base|) (<= 0 ULTIMATE.start_parse_expression_list_~start~0) (<= |ULTIMATE.start_parse_expression_list_#in~str.offset| 0) (<= 8 ULTIMATE.start_main_~i~1) (<= 0 |#t~string1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_parse_expression_list_~#str2~0.base|) (= |#t~string0.offset| 0) (<= 0 |#StackHeapBarrier|)) [2020-12-03 12:38:50,130 INFO L262 CegarLoopResult]: For program point L67-6(line 67) no Hoare annotation was computed. [2020-12-03 12:38:50,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:38:50 BoogieIcfgContainer [2020-12-03 12:38:50,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:38:50,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:38:50,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:38:50,168 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:38:50,168 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:38:29" (3/4) ... [2020-12-03 12:38:50,171 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:38:50,181 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2020-12-03 12:38:50,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-03 12:38:50,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-03 12:38:50,183 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:38:50,208 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((((((0 <= str && \old(cond) == cond) && dest == dest) && ((34 == unknown-#memory_int-unknown[str][str + j + 1] || !(34 == unknown-#memory_int-unknown[str][str + j])) || j <= 0)) && j < start + 1) && start <= j) && str2 == dest) && start + \old(n) == j + 1) && 0 <= i) && str2 == 0) && 0 <= A) && str + start == src) && 0 <= start) && str == src) && 8 <= i) && #NULL == 0) && (if j < start + 1 then 1 else 0) == \old(cond)) && 0 <= str2) && 0 <= unknown-#StackHeapBarrier-unknown) && "veris.c_OpenSER_cases1_stripFullBoth_arr.c" == 0) && 0 <= "0") && src == src) && 0 <= str) && str <= 0) && #NULL == 0) && 0 <= str) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && dest == dest) && A == 0) && n == \old(n)) && 0 <= str) && src == src) && str2 == dest) && str <= 0) && "0" == 0 [2020-12-03 12:38:50,232 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a53136ad-8ad3-4764-8080-f18a10bb6069/bin/utaipan/witness.graphml [2020-12-03 12:38:50,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:38:50,234 INFO L168 Benchmark]: Toolchain (without parser) took 22140.51 ms. Allocated memory was 96.5 MB in the beginning and 249.6 MB in the end (delta: 153.1 MB). Free memory was 66.3 MB in the beginning and 143.9 MB in the end (delta: -77.6 MB). Peak memory consumption was 75.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:38:50,234 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 96.5 MB. Free memory was 55.6 MB in the beginning and 55.6 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:38:50,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.59 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 65.8 MB in the beginning and 92.3 MB in the end (delta: -26.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:38:50,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.14 ms. Allocated memory is still 117.4 MB. Free memory was 92.3 MB in the beginning and 90.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:38:50,235 INFO L168 Benchmark]: Boogie Preprocessor took 36.58 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 89.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:38:50,236 INFO L168 Benchmark]: RCFGBuilder took 795.23 ms. Allocated memory is still 117.4 MB. Free memory was 89.1 MB in the beginning and 50.9 MB in the end (delta: 38.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-12-03 12:38:50,236 INFO L168 Benchmark]: TraceAbstraction took 20866.75 ms. Allocated memory was 117.4 MB in the beginning and 249.6 MB in the end (delta: 132.1 MB). Free memory was 50.4 MB in the beginning and 148.1 MB in the end (delta: -97.7 MB). Peak memory consumption was 108.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:38:50,237 INFO L168 Benchmark]: Witness Printer took 64.98 ms. Allocated memory is still 249.6 MB. Free memory was 148.1 MB in the beginning and 143.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:38:50,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 96.5 MB. Free memory was 55.6 MB in the beginning and 55.6 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.59 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 65.8 MB in the beginning and 92.3 MB in the end (delta: -26.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.14 ms. Allocated memory is still 117.4 MB. Free memory was 92.3 MB in the beginning and 90.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.58 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 89.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 795.23 ms. Allocated memory is still 117.4 MB. Free memory was 89.1 MB in the beginning and 50.9 MB in the end (delta: 38.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20866.75 ms. Allocated memory was 117.4 MB in the beginning and 249.6 MB in the end (delta: 132.1 MB). Free memory was 50.4 MB in the beginning and 148.1 MB in the end (delta: -97.7 MB). Peak memory consumption was 108.5 MB. Max. memory is 16.1 GB. * Witness Printer took 64.98 ms. Allocated memory is still 249.6 MB. Free memory was 148.1 MB in the beginning and 143.9 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: 16]: 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 1 specifications checked. All of them hold - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: (((((((((((((((((((((0 <= "0" && 0 <= str) && 0 <= str) && ((34 == unknown-#memory_int-unknown[str][str + j + 1] || !(34 == unknown-#memory_int-unknown[str][str + j])) || j <= 0)) && str <= 0) && #NULL == 0) && 0 <= str) && 0 <= i) && str2 == 0) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && A == 0) && "veris.c_OpenSER_cases1_stripFullBoth_arr.c" <= 0) && 0 <= A) && 0 <= str) && 0 <= start) && str <= 0) && 8 <= i) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && #NULL == 0) && 0 <= str2) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((((((((((((((((("veris.c_OpenSER_cases1_stripFullBoth_arr.c" == 0 && 0 <= "0") && unknown-#memory_int-unknown[A][A + 8] == 0) && str == A) && #NULL == 0) && unknown-#length-unknown[str2] == 2) && str == str) && str == A) && !(str == 0)) && start == 0) && str == str) && str2 == 0) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && A == 0) && i + 1 == 0) && 0 <= A) && unknown-#StackHeapBarrier-unknown < str2) && j + 1 == 0) && 8 <= i) && \valid[str2] == 1) && #NULL == 0) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown) - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: ((((((((("veris.c_OpenSER_cases1_stripFullBoth_arr.c" <= 0 && 0 <= "0") && 0 <= A) && #NULL == 0) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && #NULL == 0) && 0 <= i) && "0" == 0) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && A == 0) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((0 <= str && \old(cond) == cond) && dest == dest) && ((34 == unknown-#memory_int-unknown[str][str + j + 1] || !(34 == unknown-#memory_int-unknown[str][str + j])) || j <= 0)) && j < start + 1) && start <= j) && str2 == dest) && start + \old(n) == j + 1) && 0 <= i) && str2 == 0) && 0 <= A) && str + start == src) && 0 <= start) && str == src) && 8 <= i) && #NULL == 0) && (if j < start + 1 then 1 else 0) == \old(cond)) && 0 <= str2) && 0 <= unknown-#StackHeapBarrier-unknown) && "veris.c_OpenSER_cases1_stripFullBoth_arr.c" == 0) && 0 <= "0") && src == src) && 0 <= str) && str <= 0) && #NULL == 0) && 0 <= str) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && dest == dest) && A == 0) && n == \old(n)) && 0 <= str) && src == src) && str2 == dest) && str <= 0) && "0" == 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: ((((((((((((((((((((0 <= "0" && 0 <= str) && 0 <= str) && ((34 == unknown-#memory_int-unknown[str][str + j + 1] || !(34 == unknown-#memory_int-unknown[str][str + j])) || j <= 0)) && str <= 0) && #NULL == 0) && 0 <= str) && 0 <= i) && str2 == 0) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && A == 0) && "veris.c_OpenSER_cases1_stripFullBoth_arr.c" <= 0) && 0 <= A) && 0 <= str) && 0 <= start) && str <= 0) && 8 <= i) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && #NULL == 0) && 0 <= str2) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: ((((((((((((((((((((0 <= "0" && 0 <= str) && 0 <= str) && str <= 0) && #NULL == 0) && 0 <= str) && str2 <= 0) && 0 <= i) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && A == 0) && "veris.c_OpenSER_cases1_stripFullBoth_arr.c" <= 0) && 0 <= A) && 0 <= str) && 0 <= start) && str <= 0) && 8 <= i) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && #NULL == 0) && 0 <= str2) && 0 <= str2) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: (((((((((((((((((((("veris.c_OpenSER_cases1_stripFullBoth_arr.c" == 0 && 0 <= "0") && 0 <= str) && 0 <= str) && ((34 == unknown-#memory_int-unknown[str][str + j + 1] || !(34 == unknown-#memory_int-unknown[str][str + j])) || j <= 0)) && str <= 0) && #NULL == 0) && 0 <= str) && start <= j) && 0 <= i) && str2 == 0) && 0 <= "veris.c_OpenSER_cases1_stripFullBoth_arr.c") && A == 0) && 0 <= A) && 0 <= str) && 0 <= start) && str <= 0) && 8 <= i) && #NULL == 0) && 0 <= str2) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.5s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 237 SDslu, 140 SDs, 0 SdLazy, 537 SolverSat, 110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 321 GetRequests, 222 SyntacticMatches, 10 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, 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, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 23 NumberOfFragments, 594 HoareAnnotationTreeSize, 7 FomulaSimplifications, 3554 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 574 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 7347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 625 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 48/63 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]: 3629, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 81, DAG_INTERPRETER_EARLY_EXITS: 5, TOOLS_POST_APPLICATIONS: 151, TOOLS_POST_TIME[ms]: 2110, 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: 151, TOOLS_QUANTIFIERELIM_TIME[ms]: 2054, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 191, FLUID_QUERY_TIME[ms]: 15, FLUID_QUERIES: 311, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 8, DOMAIN_JOIN_TIME[ms]: 314, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 20, DOMAIN_WIDEN_TIME[ms]: 875, DOMAIN_ISSUBSETEQ_APPLICATIONS: 33, DOMAIN_ISSUBSETEQ_TIME[ms]: 74, DOMAIN_ISBOTTOM_APPLICATIONS: 81, DOMAIN_ISBOTTOM_TIME[ms]: 114, LOOP_SUMMARIZER_APPLICATIONS: 13, LOOP_SUMMARIZER_CACHE_MISSES: 13, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 2100, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 2100, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 33, 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]: 3, PATH_EXPR_TIME[ms]: 8, REGEX_TO_DAG_TIME[ms]: 7, DAG_COMPRESSION_TIME[ms]: 41, DAG_COMPRESSION_PROCESSED_NODES: 1084, DAG_COMPRESSION_RETAINED_NODES: 254, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...