./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI --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 81014c96bc70cd23b6ae4a591041fac1c8a06131 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:36,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:36,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:36,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:36,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:36,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:36,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:36,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:36,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:36,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:36,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:36,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:36,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:36,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:36,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:36,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:36,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:36,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:36,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:36,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:36,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:36,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:36,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:36,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:36,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:36,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:36,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:36,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:36,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:36,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:36,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:36,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:36,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:36,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:36,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:36,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:36,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:36,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:36,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:36,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:36,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:36,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:36,199 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:36,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:36,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:36,201 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:36,201 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:36,201 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:36,201 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:36,202 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:36,202 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:36,202 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:36,202 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:36,203 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:36,203 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:36,203 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:36,203 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:36,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:36,205 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:36,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:36,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:36,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:36,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:36,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:36,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:36,206 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:36,207 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:36,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:36,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:36,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:36,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:36,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:36,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:36,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:36,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:36,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:36,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:36,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:36,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:36,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:36,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:36,211 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_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81014c96bc70cd23b6ae4a591041fac1c8a06131 [2021-10-11 02:28:36,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:36,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:36,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:36,504 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:36,505 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:36,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c [2021-10-11 02:28:36,582 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/data/a9ebe8ade/255153dd9f2f4789ab8cb63cbfa267ac/FLAGbd6ef94a3 [2021-10-11 02:28:37,142 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:37,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c [2021-10-11 02:28:37,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/data/a9ebe8ade/255153dd9f2f4789ab8cb63cbfa267ac/FLAGbd6ef94a3 [2021-10-11 02:28:37,498 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/data/a9ebe8ade/255153dd9f2f4789ab8cb63cbfa267ac [2021-10-11 02:28:37,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:37,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:37,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:37,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:37,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:37,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:37,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a1ccc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37, skipping insertion in model container [2021-10-11 02:28:37,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:37,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:37,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:37,740 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c[490,503] [2021-10-11 02:28:37,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:37,785 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:37,797 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c[490,503] [2021-10-11 02:28:37,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:37,828 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:37,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37 WrapperNode [2021-10-11 02:28:37,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:37,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:37,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:37,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:37,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:37,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:37,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:37,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:37,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:37,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:37,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:37,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:37,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:37,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:37,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:37,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:37,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37" (1/1) ... [2021-10-11 02:28:37,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:37,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:37,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:37,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:37,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:38,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:38,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:38,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:38,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:46,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:46,814 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-11 02:28:46,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:46 BoogieIcfgContainer [2021-10-11 02:28:46,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:46,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:46,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:46,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:46,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:37" (1/3) ... [2021-10-11 02:28:46,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6250b316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:46, skipping insertion in model container [2021-10-11 02:28:46,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:37" (2/3) ... [2021-10-11 02:28:46,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6250b316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:46, skipping insertion in model container [2021-10-11 02:28:46,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:46" (3/3) ... [2021-10-11 02:28:46,827 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound50.c [2021-10-11 02:28:46,845 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:46,848 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 02:28:46,858 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:28:46,881 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:46,881 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:46,881 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:46,882 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:46,882 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:46,882 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:46,882 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:46,882 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:46,895 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-10-11 02:28:46,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:28:46,898 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:46,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:28:46,899 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:46,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:46,904 INFO L82 PathProgramCache]: Analyzing trace with hash 189711168, now seen corresponding path program 1 times [2021-10-11 02:28:46,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:46,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146598556] [2021-10-11 02:28:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:46,989 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:46,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334040756] [2021-10-11 02:28:46,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:47,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:28:47,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:47,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:47,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146598556] [2021-10-11 02:28:47,137 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:47,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334040756] [2021-10-11 02:28:47,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:47,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-11 02:28:47,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142357646] [2021-10-11 02:28:47,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:28:47,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:47,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:28:47,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:28:47,178 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2021-10-11 02:28:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:47,221 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2021-10-11 02:28:47,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:28:47,222 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-10-11 02:28:47,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:47,245 INFO L225 Difference]: With dead ends: 61 [2021-10-11 02:28:47,246 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:28:47,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:28:47,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:28:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 02:28:47,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:28:47,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-11 02:28:47,283 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 5 [2021-10-11 02:28:47,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:47,283 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-11 02:28:47,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:28:47,283 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-11 02:28:47,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:28:47,284 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:47,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:28:47,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-11 02:28:47,488 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:47,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:47,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1480645745, now seen corresponding path program 1 times [2021-10-11 02:28:47,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:47,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358301076] [2021-10-11 02:28:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:47,511 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:47,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50429606] [2021-10-11 02:28:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:47,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:47,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:47,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:47,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358301076] [2021-10-11 02:28:47,643 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:47,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50429606] [2021-10-11 02:28:47,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:47,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-11 02:28:47,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520678383] [2021-10-11 02:28:47,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:47,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:47,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:47,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:47,649 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 3 states. [2021-10-11 02:28:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:47,715 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-10-11 02:28:47,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:47,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:28:47,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:47,723 INFO L225 Difference]: With dead ends: 57 [2021-10-11 02:28:47,723 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 02:28:47,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 02:28:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2021-10-11 02:28:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:28:47,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-10-11 02:28:47,745 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 6 [2021-10-11 02:28:47,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:47,745 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-10-11 02:28:47,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:47,746 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-10-11 02:28:47,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:28:47,747 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:47,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:28:47,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:47,953 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:47,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:47,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1480649719, now seen corresponding path program 1 times [2021-10-11 02:28:47,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:47,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592224491] [2021-10-11 02:28:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:47,959 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:47,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236288142] [2021-10-11 02:28:47,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:48,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 02:28:48,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:48,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:48,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592224491] [2021-10-11 02:28:48,141 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:48,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236288142] [2021-10-11 02:28:48,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:48,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-11 02:28:48,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358870560] [2021-10-11 02:28:48,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:28:48,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:48,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:28:48,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:48,143 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2021-10-11 02:28:52,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:52,549 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2021-10-11 02:28:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 02:28:52,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2021-10-11 02:28:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:52,552 INFO L225 Difference]: With dead ends: 99 [2021-10-11 02:28:52,553 INFO L226 Difference]: Without dead ends: 97 [2021-10-11 02:28:52,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:28:52,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-11 02:28:52,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 42. [2021-10-11 02:28:52,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-10-11 02:28:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-10-11 02:28:52,565 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2021-10-11 02:28:52,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:52,566 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-10-11 02:28:52,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:28:52,566 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-10-11 02:28:52,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:28:52,567 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:52,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:52,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:52,792 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:52,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:52,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1270362266, now seen corresponding path program 1 times [2021-10-11 02:28:52,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:52,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375589910] [2021-10-11 02:28:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:52,799 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:52,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409208218] [2021-10-11 02:28:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:52,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:28:52,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:52,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:52,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375589910] [2021-10-11 02:28:52,979 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:52,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409208218] [2021-10-11 02:28:52,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:52,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:28:52,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354412366] [2021-10-11 02:28:52,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:28:52,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:52,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:28:52,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:52,982 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 6 states. [2021-10-11 02:28:53,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:53,109 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-10-11 02:28:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:28:53,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-10-11 02:28:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:53,111 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:28:53,112 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 02:28:53,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:28:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 02:28:53,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2021-10-11 02:28:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:28:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-10-11 02:28:53,124 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 8 [2021-10-11 02:28:53,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:53,124 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-10-11 02:28:53,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:28:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-10-11 02:28:53,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:28:53,125 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:53,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:53,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:53,340 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:53,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:53,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1047583197, now seen corresponding path program 1 times [2021-10-11 02:28:53,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:53,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93116531] [2021-10-11 02:28:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:53,345 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:53,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100481671] [2021-10-11 02:28:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:53,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:28:53,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:53,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:53,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93116531] [2021-10-11 02:28:53,526 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:53,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100481671] [2021-10-11 02:28:53,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:53,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:28:53,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657860940] [2021-10-11 02:28:53,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:28:53,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:53,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:28:53,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:53,528 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 6 states. [2021-10-11 02:28:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:53,684 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-10-11 02:28:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:28:53,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-10-11 02:28:53,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:53,686 INFO L225 Difference]: With dead ends: 60 [2021-10-11 02:28:53,686 INFO L226 Difference]: Without dead ends: 58 [2021-10-11 02:28:53,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:28:53,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-11 02:28:53,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2021-10-11 02:28:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:28:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2021-10-11 02:28:53,696 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 10 [2021-10-11 02:28:53,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:53,696 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2021-10-11 02:28:53,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:28:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2021-10-11 02:28:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:28:53,697 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:53,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:53,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:53,916 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:53,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:53,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1705263040, now seen corresponding path program 1 times [2021-10-11 02:28:53,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:53,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671863941] [2021-10-11 02:28:53,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:53,920 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:53,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082307938] [2021-10-11 02:28:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:53,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-11 02:28:53,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:56,022 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-11 02:29:00,139 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2021-10-11 02:29:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:00,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:00,211 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 2, 1] term [2021-10-11 02:29:00,212 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:29:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:00,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671863941] [2021-10-11 02:29:00,300 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:00,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082307938] [2021-10-11 02:29:00,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:00,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-11 02:29:00,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113156803] [2021-10-11 02:29:00,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:29:00,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:00,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:29:00,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:29:00,302 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 8 states. [2021-10-11 02:29:00,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:00,306 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-10-11 02:29:00,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:29:00,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2021-10-11 02:29:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:00,307 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:29:00,307 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:29:00,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:29:00,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:29:00,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:29:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:29:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:29:00,309 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-11 02:29:00,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:00,309 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:29:00,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:29:00,309 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:29:00,309 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:29:00,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:00,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:29:00,565 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:29:00,566 INFO L262 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:29:00,566 INFO L258 CegarLoopResult]: At program point L11-2(lines 10 16) the Hoare annotation is: false [2021-10-11 02:29:00,566 INFO L262 CegarLoopResult]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:29:00,566 INFO L258 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2021-10-11 02:29:00,567 INFO L262 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:29:00,567 INFO L258 CegarLoopResult]: At program point L11-8(lines 10 16) the Hoare annotation is: false [2021-10-11 02:29:00,567 INFO L262 CegarLoopResult]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:29:00,567 INFO L258 CegarLoopResult]: At program point L11-11(lines 52 53) the Hoare annotation is: false [2021-10-11 02:29:00,567 INFO L262 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:29:00,568 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:29:00,568 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:29:00,568 INFO L258 CegarLoopResult]: At program point L11-14(lines 10 16) the Hoare annotation is: false [2021-10-11 02:29:00,568 INFO L262 CegarLoopResult]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:29:00,568 INFO L265 CegarLoopResult]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2021-10-11 02:29:00,568 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:29:00,569 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:29:00,569 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:29:00,569 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:29:00,569 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:29:00,569 INFO L262 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:29:00,569 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:29:00,570 INFO L258 CegarLoopResult]: At program point L47-2(lines 47 56) the Hoare annotation is: false [2021-10-11 02:29:00,570 INFO L262 CegarLoopResult]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2021-10-11 02:29:00,570 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:29:00,570 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:29:00,570 INFO L258 CegarLoopResult]: At program point L41-1(lines 7 68) the Hoare annotation is: false [2021-10-11 02:29:00,570 INFO L262 CegarLoopResult]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2021-10-11 02:29:00,571 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:29:00,571 INFO L262 CegarLoopResult]: For program point L42(lines 42 43) no Hoare annotation was computed. [2021-10-11 02:29:00,571 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:29:00,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:00 BoogieIcfgContainer [2021-10-11 02:29:00,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:00,588 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:00,588 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:00,588 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:00,589 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:46" (3/4) ... [2021-10-11 02:29:00,592 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:29:00,610 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2021-10-11 02:29:00,611 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:29:00,611 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:29:00,612 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:29:00,682 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a62c879-9b56-4f72-857c-04ad4ef55740/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:00,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:00,684 INFO L168 Benchmark]: Toolchain (without parser) took 23181.39 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 64.0 MB in the beginning and 89.4 MB in the end (delta: -25.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:00,684 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory is still 50.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:00,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.13 ms. Allocated memory is still 92.3 MB. Free memory was 63.8 MB in the beginning and 68.2 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:00,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.40 ms. Allocated memory is still 92.3 MB. Free memory was 68.2 MB in the beginning and 66.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:00,686 INFO L168 Benchmark]: Boogie Preprocessor took 57.54 ms. Allocated memory is still 92.3 MB. Free memory was 66.5 MB in the beginning and 65.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:00,687 INFO L168 Benchmark]: RCFGBuilder took 8882.00 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 65.1 MB in the beginning and 92.5 MB in the end (delta: -27.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:00,687 INFO L168 Benchmark]: TraceAbstraction took 13768.18 ms. Allocated memory is still 127.9 MB. Free memory was 91.9 MB in the beginning and 92.6 MB in the end (delta: -641.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:00,688 INFO L168 Benchmark]: Witness Printer took 95.03 ms. Allocated memory is still 127.9 MB. Free memory was 92.6 MB in the beginning and 89.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:00,690 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory is still 50.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.13 ms. Allocated memory is still 92.3 MB. Free memory was 63.8 MB in the beginning and 68.2 MB in the end (delta: -4.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.40 ms. Allocated memory is still 92.3 MB. Free memory was 68.2 MB in the beginning and 66.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.54 ms. Allocated memory is still 92.3 MB. Free memory was 66.5 MB in the beginning and 65.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 8882.00 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 65.1 MB in the beginning and 92.5 MB in the end (delta: -27.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13768.18 ms. Allocated memory is still 127.9 MB. Free memory was 91.9 MB in the beginning and 92.6 MB in the end (delta: -641.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Witness Printer took 95.03 ms. Allocated memory is still 127.9 MB. Free memory was 92.6 MB in the beginning and 89.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 127 SDtfs, 166 SDslu, 157 SDs, 0 SdLazy, 167 SolverSat, 79 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 85 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 6538 SizeOfPredicates, 43 NumberOfNonLiveVariables, 490 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...