./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.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_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/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_15d8342c-aba1-4d3e-a255-89f030ffd35c/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/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_15d8342c-aba1-4d3e-a255-89f030ffd35c/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 becf68b1b41bf8f9c75117f82605e436bc8d5a41 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:31:41,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:41,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:41,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:41,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:41,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:41,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:41,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:41,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:41,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:41,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:41,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:41,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:41,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:41,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:41,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:41,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:41,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:41,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:41,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:41,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:41,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:41,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:41,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:41,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:41,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:41,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:41,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:41,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:41,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:41,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:41,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:41,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:41,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:41,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:41,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:41,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:41,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:41,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:41,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:41,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:41,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:31:41,329 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:41,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:41,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:41,331 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:41,332 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:41,332 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:41,332 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:31:41,332 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:41,333 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:41,334 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:31:41,334 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:31:41,334 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:41,334 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:31:41,335 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:31:41,335 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:31:41,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:41,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:41,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:31:41,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:41,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:41,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:41,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:41,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:41,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:41,338 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:41,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:41,338 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:41,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:41,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:41,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:41,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:41,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:41,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:41,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:41,341 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:31:41,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:31:41,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:41,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:41,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:41,342 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_15d8342c-aba1-4d3e-a255-89f030ffd35c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> becf68b1b41bf8f9c75117f82605e436bc8d5a41 [2021-10-11 02:31:41,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:41,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:41,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:41,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:41,638 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:41,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2021-10-11 02:31:41,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/bin/utaipan-WLngWcDbfI/data/46a0f8c7b/65fc612c898c46d5934a0548b6b206b9/FLAGf2cb20a23 [2021-10-11 02:31:42,211 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:42,211 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2021-10-11 02:31:42,218 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/bin/utaipan-WLngWcDbfI/data/46a0f8c7b/65fc612c898c46d5934a0548b6b206b9/FLAGf2cb20a23 [2021-10-11 02:31:42,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/bin/utaipan-WLngWcDbfI/data/46a0f8c7b/65fc612c898c46d5934a0548b6b206b9 [2021-10-11 02:31:42,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:42,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:42,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:42,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:42,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:42,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:42" (1/1) ... [2021-10-11 02:31:42,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6eb454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42, skipping insertion in model container [2021-10-11 02:31:42,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:42" (1/1) ... [2021-10-11 02:31:42,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:42,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:42,811 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_15d8342c-aba1-4d3e-a255-89f030ffd35c/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-10-11 02:31:42,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:42,827 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:42,838 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_15d8342c-aba1-4d3e-a255-89f030ffd35c/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-10-11 02:31:42,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:42,854 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:42,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42 WrapperNode [2021-10-11 02:31:42,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:42,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:42,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:42,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:42,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42" (1/1) ... [2021-10-11 02:31:42,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42" (1/1) ... [2021-10-11 02:31:42,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:42,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:42,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:42,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:42,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42" (1/1) ... [2021-10-11 02:31:42,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42" (1/1) ... [2021-10-11 02:31:42,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42" (1/1) ... [2021-10-11 02:31:42,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42" (1/1) ... [2021-10-11 02:31:42,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42" (1/1) ... [2021-10-11 02:31:42,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42" (1/1) ... [2021-10-11 02:31:42,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42" (1/1) ... [2021-10-11 02:31:42,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:42,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:42,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:42,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:42,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/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 02:31:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:31:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:42,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:42,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:43,207 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:31:43,207 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:31:43,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:43 BoogieIcfgContainer [2021-10-11 02:31:43,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:31:43,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:31:43,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:31:43,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:31:43,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:42" (1/3) ... [2021-10-11 02:31:43,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ea39d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:43, skipping insertion in model container [2021-10-11 02:31:43,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:42" (2/3) ... [2021-10-11 02:31:43,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ea39d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:43, skipping insertion in model container [2021-10-11 02:31:43,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:43" (3/3) ... [2021-10-11 02:31:43,219 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark23_conjunctive.i [2021-10-11 02:31:43,234 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:31:43,237 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:31:43,248 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:31:43,277 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:31:43,277 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:31:43,277 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:31:43,278 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:31:43,278 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:31:43,278 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:31:43,278 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:31:43,278 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:31:43,291 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 02:31:43,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:31:43,296 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:43,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:31:43,298 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:43,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:43,304 INFO L82 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2021-10-11 02:31:43,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:43,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123647635] [2021-10-11 02:31:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:43,471 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 02:31:43,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123647635] [2021-10-11 02:31:43,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:43,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:43,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460808211] [2021-10-11 02:31:43,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:43,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:43,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:43,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:43,493 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2021-10-11 02:31:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:43,540 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-11 02:31:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:43,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:31:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:43,550 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:31:43,550 INFO L226 Difference]: Without dead ends: 7 [2021-10-11 02:31:43,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 02:31:43,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-11 02:31:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-11 02:31:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-11 02:31:43,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-11 02:31:43,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-11 02:31:43,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:43,584 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-11 02:31:43,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:43,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-11 02:31:43,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:31:43,585 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:43,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:31:43,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:31:43,586 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:43,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:43,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2021-10-11 02:31:43,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:43,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853278506] [2021-10-11 02:31:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:43,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853278506] [2021-10-11 02:31:43,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783917487] [2021-10-11 02:31:43,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/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 02:31:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:43,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:31:43,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:43,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:43,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [536721402] [2021-10-11 02:31:43,906 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:31:43,906 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:31:43,913 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:31:43,921 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:31:43,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:31:44,477 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:31:44,675 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-10-11 02:31:44,869 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:31:44,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:31:44,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-10-11 02:31:44,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054151745] [2021-10-11 02:31:44,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:31:44,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:44,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:31:44,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:31:44,875 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2021-10-11 02:31:44,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:44,894 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-11 02:31:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:31:44,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2021-10-11 02:31:44,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:44,897 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:31:44,900 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:31:44,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:31:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:31:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:31:44,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:31:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-11 02:31:44,906 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2021-10-11 02:31:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:44,907 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-11 02:31:44,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:31:44,907 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-11 02:31:44,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:31:44,909 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:44,909 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-11 02:31:45,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:31:45,123 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:45,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:45,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1390313566, now seen corresponding path program 2 times [2021-10-11 02:31:45,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:45,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630924517] [2021-10-11 02:31:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:45,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630924517] [2021-10-11 02:31:45,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552844165] [2021-10-11 02:31:45,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/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 02:31:45,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-11 02:31:45,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:31:45,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:31:45,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:45,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:45,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1537740420] [2021-10-11 02:31:45,409 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:31:45,410 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:31:45,410 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:31:45,410 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:31:45,411 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:31:45,721 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:31:46,121 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:31:46,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:31:46,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-10-11 02:31:46,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124704955] [2021-10-11 02:31:46,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 02:31:46,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:46,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 02:31:46,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:31:46,125 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 12 states. [2021-10-11 02:31:46,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:46,169 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2021-10-11 02:31:46,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:31:46,170 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 9 [2021-10-11 02:31:46,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:46,171 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:31:46,171 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:31:46,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:31:46,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:31:46,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:31:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:31:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 02:31:46,182 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2021-10-11 02:31:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:46,182 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 02:31:46,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 02:31:46,182 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 02:31:46,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:31:46,183 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:46,183 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2021-10-11 02:31:46,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-11 02:31:46,398 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:46,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:46,398 INFO L82 PathProgramCache]: Analyzing trace with hash -955493474, now seen corresponding path program 3 times [2021-10-11 02:31:46,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:46,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930213938] [2021-10-11 02:31:46,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:46,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930213938] [2021-10-11 02:31:46,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051756706] [2021-10-11 02:31:46,579 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/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 02:31:46,640 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 02:31:46,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:31:46,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:31:46,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:46,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:47,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [410552997] [2021-10-11 02:31:47,019 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:31:47,019 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:31:47,020 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:31:47,020 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:31:47,020 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:31:47,166 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:31:47,566 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:31:47,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:31:47,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2021-10-11 02:31:47,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797484010] [2021-10-11 02:31:47,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-10-11 02:31:47,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:47,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-11 02:31:47,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2021-10-11 02:31:47,571 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 24 states. [2021-10-11 02:31:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:47,637 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2021-10-11 02:31:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-11 02:31:47,637 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 15 [2021-10-11 02:31:47,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:47,638 INFO L225 Difference]: With dead ends: 31 [2021-10-11 02:31:47,638 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 02:31:47,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2021-10-11 02:31:47,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 02:31:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-11 02:31:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 02:31:47,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-10-11 02:31:47,644 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15 [2021-10-11 02:31:47,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:47,644 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-10-11 02:31:47,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-10-11 02:31:47,645 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-10-11 02:31:47,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 02:31:47,645 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:47,646 INFO L422 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1] [2021-10-11 02:31:47,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-11 02:31:47,862 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:47,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:47,862 INFO L82 PathProgramCache]: Analyzing trace with hash -643192290, now seen corresponding path program 4 times [2021-10-11 02:31:47,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:47,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735804422] [2021-10-11 02:31:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:48,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735804422] [2021-10-11 02:31:48,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373926136] [2021-10-11 02:31:48,348 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/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 02:31:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:48,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-11 02:31:48,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:48,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:49,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [404591368] [2021-10-11 02:31:49,584 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:31:49,585 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:31:49,585 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:31:49,585 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:31:49,585 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:31:49,727 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:31:49,984 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-10-11 02:31:50,188 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:31:50,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:31:50,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2021-10-11 02:31:50,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664862580] [2021-10-11 02:31:50,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-10-11 02:31:50,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:50,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-11 02:31:50,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1139, Invalid=1513, Unknown=0, NotChecked=0, Total=2652 [2021-10-11 02:31:50,192 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 48 states. [2021-10-11 02:31:50,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:50,314 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2021-10-11 02:31:50,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-11 02:31:50,315 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 27 [2021-10-11 02:31:50,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:50,316 INFO L225 Difference]: With dead ends: 55 [2021-10-11 02:31:50,316 INFO L226 Difference]: Without dead ends: 52 [2021-10-11 02:31:50,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1139, Invalid=1513, Unknown=0, NotChecked=0, Total=2652 [2021-10-11 02:31:50,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-11 02:31:50,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-11 02:31:50,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-10-11 02:31:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-10-11 02:31:50,326 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 27 [2021-10-11 02:31:50,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:50,326 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-10-11 02:31:50,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2021-10-11 02:31:50,326 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-10-11 02:31:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-11 02:31:50,328 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:50,328 INFO L422 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1] [2021-10-11 02:31:50,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:50,554 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:50,554 INFO L82 PathProgramCache]: Analyzing trace with hash -870639842, now seen corresponding path program 5 times [2021-10-11 02:31:50,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:50,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413654386] [2021-10-11 02:31:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:52,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413654386] [2021-10-11 02:31:52,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222992068] [2021-10-11 02:31:52,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/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 02:31:52,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-10-11 02:31:52,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:31:52,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-11 02:31:52,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:52,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:56,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1501621066] [2021-10-11 02:31:56,321 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:31:56,321 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:31:56,321 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:31:56,321 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:31:56,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:31:56,464 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:31:56,797 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-10-11 02:31:57,038 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:31:57,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:31:57,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2021-10-11 02:31:57,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161340998] [2021-10-11 02:31:57,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-10-11 02:31:57,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:57,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-10-11 02:31:57,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4571, Invalid=5329, Unknown=0, NotChecked=0, Total=9900 [2021-10-11 02:31:57,047 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 96 states. [2021-10-11 02:31:57,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:57,347 INFO L93 Difference]: Finished difference Result 103 states and 150 transitions. [2021-10-11 02:31:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-11 02:31:57,347 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 51 [2021-10-11 02:31:57,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:57,354 INFO L225 Difference]: With dead ends: 103 [2021-10-11 02:31:57,354 INFO L226 Difference]: Without dead ends: 100 [2021-10-11 02:31:57,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=4571, Invalid=5329, Unknown=0, NotChecked=0, Total=9900 [2021-10-11 02:31:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-11 02:31:57,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-10-11 02:31:57,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-10-11 02:31:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2021-10-11 02:31:57,380 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 51 [2021-10-11 02:31:57,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:57,380 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2021-10-11 02:31:57,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 96 states. [2021-10-11 02:31:57,380 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2021-10-11 02:31:57,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-11 02:31:57,385 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:57,385 INFO L422 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1] [2021-10-11 02:31:57,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-11 02:31:57,614 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:57,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:57,614 INFO L82 PathProgramCache]: Analyzing trace with hash -816254690, now seen corresponding path program 6 times [2021-10-11 02:31:57,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:57,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536711097] [2021-10-11 02:31:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:02,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536711097] [2021-10-11 02:32:02,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804957422] [2021-10-11 02:32:02,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/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 02:32:02,415 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 02:32:02,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:32:02,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-11 02:32:02,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:02,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:03,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [545511763] [2021-10-11 02:32:03,497 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:32:03,497 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:03,498 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:03,498 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:03,498 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:03,621 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:04,388 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:04,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:32:04,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 102 [2021-10-11 02:32:04,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315482894] [2021-10-11 02:32:04,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-10-11 02:32:04,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:04,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-10-11 02:32:04,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5162, Invalid=5968, Unknown=0, NotChecked=0, Total=11130 [2021-10-11 02:32:04,399 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 102 states. [2021-10-11 02:32:04,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:04,716 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2021-10-11 02:32:04,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-11 02:32:04,717 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 99 [2021-10-11 02:32:04,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:04,724 INFO L225 Difference]: With dead ends: 109 [2021-10-11 02:32:04,725 INFO L226 Difference]: Without dead ends: 106 [2021-10-11 02:32:04,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=5162, Invalid=5968, Unknown=0, NotChecked=0, Total=11130 [2021-10-11 02:32:04,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-11 02:32:04,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-10-11 02:32:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-10-11 02:32:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2021-10-11 02:32:04,748 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 99 [2021-10-11 02:32:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:04,749 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2021-10-11 02:32:04,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 102 states. [2021-10-11 02:32:04,749 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2021-10-11 02:32:04,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-11 02:32:04,751 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:04,751 INFO L422 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1] [2021-10-11 02:32:04,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:04,954 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:04,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:04,954 INFO L82 PathProgramCache]: Analyzing trace with hash -425773986, now seen corresponding path program 7 times [2021-10-11 02:32:04,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:04,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672515192] [2021-10-11 02:32:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:11,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:11,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672515192] [2021-10-11 02:32:11,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461555457] [2021-10-11 02:32:11,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:11,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 205 conjunts are in the unsatisfiable core [2021-10-11 02:32:11,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:11,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:12,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [61003660] [2021-10-11 02:32:12,536 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:32:12,536 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:12,537 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:12,537 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:12,537 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:12,669 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:13,724 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:13,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:32:13,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104, 104] total 105 [2021-10-11 02:32:13,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026499218] [2021-10-11 02:32:13,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-10-11 02:32:13,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:13,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-10-11 02:32:13,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=11553, Unknown=0, NotChecked=0, Total=11772 [2021-10-11 02:32:13,729 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2021-10-11 02:32:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:19,234 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2021-10-11 02:32:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-11 02:32:19,235 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2021-10-11 02:32:19,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:19,237 INFO L225 Difference]: With dead ends: 110 [2021-10-11 02:32:19,237 INFO L226 Difference]: Without dead ends: 107 [2021-10-11 02:32:19,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 305 SyntacticMatches, 5 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=224, Invalid=11766, Unknown=0, NotChecked=0, Total=11990 [2021-10-11 02:32:19,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-11 02:32:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-10-11 02:32:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-10-11 02:32:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2021-10-11 02:32:19,270 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2021-10-11 02:32:19,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:19,271 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2021-10-11 02:32:19,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 105 states. [2021-10-11 02:32:19,272 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2021-10-11 02:32:19,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-11 02:32:19,277 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:19,277 INFO L422 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1, 1] [2021-10-11 02:32:19,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-11 02:32:19,502 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:19,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:19,502 INFO L82 PathProgramCache]: Analyzing trace with hash -314675012, now seen corresponding path program 8 times [2021-10-11 02:32:19,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:19,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447390742] [2021-10-11 02:32:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 5151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:24,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447390742] [2021-10-11 02:32:24,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:24,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2021-10-11 02:32:24,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785313412] [2021-10-11 02:32:24,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-10-11 02:32:24,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:24,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-10-11 02:32:24,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-11 02:32:24,694 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 103 states. [2021-10-11 02:32:24,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:24,897 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2021-10-11 02:32:24,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-10-11 02:32:24,898 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 106 [2021-10-11 02:32:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:24,898 INFO L225 Difference]: With dead ends: 107 [2021-10-11 02:32:24,898 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:32:24,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-11 02:32:24,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:32:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:32:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:32:24,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:32:24,901 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2021-10-11 02:32:24,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:24,901 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:32:24,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 103 states. [2021-10-11 02:32:24,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:32:24,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:32:24,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-10-11 02:32:24,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:32:25,064 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 701 [2021-10-11 02:32:28,768 WARN L197 SmtUtils]: Spent 3.70 s on a formula simplification. DAG size of input: 701 DAG size of output: 659 [2021-10-11 02:32:28,773 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:32:28,776 INFO L258 CegarLoopResult]: At program point L23-2(lines 23 26) the Hoare annotation is: (or (and (<= 59 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 118) (<= 118 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 59)) (and (< ULTIMATE.start_main_~i~0 99) (<= 98 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 196) (<= 196 ULTIMATE.start_main_~j~0)) (and (<= 23 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 46) (<= 46 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 23)) (and (<= 63 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 126) (<= ULTIMATE.start_main_~i~0 63) (<= 126 ULTIMATE.start_main_~j~0)) (and (<= 176 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 88) (<= ULTIMATE.start_main_~j~0 176) (<= 88 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 82) (<= 164 ULTIMATE.start_main_~j~0) (<= 82 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 164)) (and (<= ULTIMATE.start_main_~j~0 144) (<= 72 ULTIMATE.start_main_~i~0) (<= 144 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 72)) (and (<= ULTIMATE.start_main_~i~0 3) (<= 6 ULTIMATE.start_main_~j~0) (<= 3 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 6)) (and (<= 156 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 78) (<= ULTIMATE.start_main_~j~0 156) (<= 78 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 92) (<= 184 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 184) (<= 92 ULTIMATE.start_main_~i~0)) (and (<= 68 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 68) (<= ULTIMATE.start_main_~j~0 136) (<= 136 ULTIMATE.start_main_~j~0)) (and (<= 43 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 86) (<= ULTIMATE.start_main_~i~0 43) (<= 86 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~j~0 148) (<= 148 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 74) (<= 74 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 94) (<= 94 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 47) (<= 47 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 58) (<= ULTIMATE.start_main_~i~0 29) (<= 29 ULTIMATE.start_main_~i~0) (<= 58 ULTIMATE.start_main_~j~0)) (and (<= 186 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 93) (<= 93 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 186)) (and (<= ULTIMATE.start_main_~j~0 128) (<= ULTIMATE.start_main_~i~0 64) (<= 64 ULTIMATE.start_main_~i~0) (<= 128 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~j~0 30) (<= ULTIMATE.start_main_~i~0 15) (<= 15 ULTIMATE.start_main_~i~0) (<= 30 ULTIMATE.start_main_~j~0)) (and (<= 178 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 89) (<= 89 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 178)) (and (<= 46 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 46) (<= 92 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 92)) (and (<= ULTIMATE.start_main_~i~0 16) (<= 16 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 32) (<= 32 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 70) (<= 70 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 140) (<= 140 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 52) (<= 52 ULTIMATE.start_main_~i~0) (<= 104 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 104)) (and (<= ULTIMATE.start_main_~i~0 26) (<= ULTIMATE.start_main_~j~0 52) (<= 26 ULTIMATE.start_main_~i~0) (<= 52 ULTIMATE.start_main_~j~0)) (and (<= 28 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 14) (<= 14 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 28)) (and (<= 12 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 24) (<= ULTIMATE.start_main_~i~0 12) (<= 24 ULTIMATE.start_main_~j~0)) (and (<= 85 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 85) (<= ULTIMATE.start_main_~j~0 170) (<= 170 ULTIMATE.start_main_~j~0)) (and (<= 20 ULTIMATE.start_main_~j~0) (<= 10 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 10) (<= ULTIMATE.start_main_~j~0 20)) (and (<= 79 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 158) (<= 158 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 79)) (and (<= ULTIMATE.start_main_~j~0 194) (< ULTIMATE.start_main_~i~0 98) (<= 194 ULTIMATE.start_main_~j~0) (<= 97 ULTIMATE.start_main_~i~0)) (and (<= 190 ULTIMATE.start_main_~j~0) (< ULTIMATE.start_main_~i~0 96) (<= ULTIMATE.start_main_~j~0 190) (<= 95 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 100) (<= 50 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 50) (<= 100 ULTIMATE.start_main_~j~0)) (and (<= 84 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 42) (<= 42 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 84)) (and (<= 154 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 77) (<= 77 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 154)) (and (<= 172 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 172) (<= ULTIMATE.start_main_~i~0 86) (<= 86 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 28) (<= 56 ULTIMATE.start_main_~j~0) (<= 28 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 56)) (and (<= ULTIMATE.start_main_~i~0 75) (<= 150 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 150) (<= 75 ULTIMATE.start_main_~i~0)) (and (<= 84 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 168) (<= 168 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 84)) (and (<= 114 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 57) (<= 57 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 114)) (and (<= ULTIMATE.start_main_~i~0 5) (<= ULTIMATE.start_main_~j~0 10) (<= 5 ULTIMATE.start_main_~i~0) (<= 10 ULTIMATE.start_main_~j~0)) (and (<= 91 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 91) (<= ULTIMATE.start_main_~j~0 182) (<= 182 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 55) (<= 110 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 110) (<= 55 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 68) (<= 68 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 34) (<= 34 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 66) (<= 132 ULTIMATE.start_main_~j~0) (<= 66 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 132)) (and (<= 62 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 31) (<= ULTIMATE.start_main_~j~0 62) (<= 31 ULTIMATE.start_main_~i~0)) (and (<= 25 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 25) (<= 50 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 50)) (and (<= ULTIMATE.start_main_~i~0 83) (<= ULTIMATE.start_main_~j~0 166) (<= 166 ULTIMATE.start_main_~j~0) (<= 83 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 130) (<= 65 ULTIMATE.start_main_~i~0) (<= 130 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 65)) (and (< 199 ULTIMATE.start_main_~j~0) (<= 100 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 200)) (and (<= ULTIMATE.start_main_~j~0 146) (<= ULTIMATE.start_main_~i~0 73) (<= 73 ULTIMATE.start_main_~i~0) (<= 146 ULTIMATE.start_main_~j~0)) (and (<= 80 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 40) (<= 40 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 80)) (and (<= 16 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 16) (<= 8 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 8)) (and (<= ULTIMATE.start_main_~j~0 2) (<= 2 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 1) (<= 1 ULTIMATE.start_main_~i~0)) (and (<= 162 ULTIMATE.start_main_~j~0) (<= 81 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 81) (<= ULTIMATE.start_main_~j~0 162)) (and (<= ULTIMATE.start_main_~i~0 24) (<= ULTIMATE.start_main_~j~0 48) (<= 48 ULTIMATE.start_main_~j~0) (<= 24 ULTIMATE.start_main_~i~0)) (and (<= 69 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 69) (<= ULTIMATE.start_main_~j~0 138) (<= 138 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~j~0 180) (<= ULTIMATE.start_main_~i~0 90) (<= 180 ULTIMATE.start_main_~j~0) (<= 90 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 142) (<= 71 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 71) (<= 142 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 37) (<= 74 ULTIMATE.start_main_~j~0) (<= 37 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 74)) (and (<= 54 ULTIMATE.start_main_~i~0) (<= 108 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 108) (<= ULTIMATE.start_main_~i~0 54)) (and (<= ULTIMATE.start_main_~j~0 22) (<= ULTIMATE.start_main_~i~0 11) (<= 11 ULTIMATE.start_main_~i~0) (<= 22 ULTIMATE.start_main_~j~0)) (and (<= 102 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 51) (<= ULTIMATE.start_main_~j~0 102) (<= 51 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 192) (< ULTIMATE.start_main_~i~0 97) (<= 96 ULTIMATE.start_main_~i~0) (<= 192 ULTIMATE.start_main_~j~0)) (and (<= 99 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 100) (<= ULTIMATE.start_main_~j~0 198) (<= 198 ULTIMATE.start_main_~j~0)) (and (<= 45 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 45) (<= ULTIMATE.start_main_~j~0 90) (<= 90 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~j~0 12) (<= ULTIMATE.start_main_~i~0 6) (<= 6 ULTIMATE.start_main_~i~0) (<= 12 ULTIMATE.start_main_~j~0)) (and (<= 13 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 26) (<= 26 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 13)) (and (<= ULTIMATE.start_main_~j~0 34) (<= 34 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 17) (<= 17 ULTIMATE.start_main_~i~0)) (and (<= 0 ULTIMATE.start_main_~i~0) (<= 0 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 0) (<= ULTIMATE.start_main_~j~0 0)) (and (<= 122 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 61) (<= ULTIMATE.start_main_~j~0 122) (<= 61 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 4) (<= 2 ULTIMATE.start_main_~i~0) (<= 4 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 2)) (and (<= ULTIMATE.start_main_~i~0 21) (<= 42 ULTIMATE.start_main_~j~0) (<= 21 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 42)) (and (<= ULTIMATE.start_main_~i~0 27) (<= ULTIMATE.start_main_~j~0 54) (<= 54 ULTIMATE.start_main_~j~0) (<= 27 ULTIMATE.start_main_~i~0)) (and (<= 70 ULTIMATE.start_main_~j~0) (<= 35 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 35) (<= ULTIMATE.start_main_~j~0 70)) (and (<= 32 ULTIMATE.start_main_~i~0) (<= 64 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 32) (<= ULTIMATE.start_main_~j~0 64)) (and (<= 49 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 49) (<= ULTIMATE.start_main_~j~0 98) (<= 98 ULTIMATE.start_main_~j~0)) (and (<= 36 ULTIMATE.start_main_~j~0) (<= 18 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 36) (<= ULTIMATE.start_main_~i~0 18)) (and (<= ULTIMATE.start_main_~j~0 120) (<= 60 ULTIMATE.start_main_~i~0) (<= 120 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 60)) (and (<= ULTIMATE.start_main_~j~0 60) (<= 60 ULTIMATE.start_main_~j~0) (<= 30 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 30)) (and (<= 38 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 19) (<= ULTIMATE.start_main_~j~0 38) (<= 19 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 38) (<= ULTIMATE.start_main_~j~0 76) (<= 38 ULTIMATE.start_main_~i~0) (<= 76 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 80) (<= ULTIMATE.start_main_~j~0 160) (<= 80 ULTIMATE.start_main_~i~0) (<= 160 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~j~0 14) (<= 7 ULTIMATE.start_main_~i~0) (<= 14 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 7)) (and (<= 56 ULTIMATE.start_main_~i~0) (<= 112 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 56) (<= ULTIMATE.start_main_~j~0 112)) (and (<= ULTIMATE.start_main_~j~0 152) (<= 152 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 76) (<= 76 ULTIMATE.start_main_~i~0)) (and (<= 20 ULTIMATE.start_main_~i~0) (<= 40 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 40) (<= ULTIMATE.start_main_~i~0 20)) (and (<= ULTIMATE.start_main_~i~0 53) (<= 53 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 106) (<= 106 ULTIMATE.start_main_~j~0)) (and (<= 124 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 62) (<= 62 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 124)) (and (<= 18 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 18) (<= ULTIMATE.start_main_~i~0 9) (<= 9 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 188) (<= 188 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 94) (<= 94 ULTIMATE.start_main_~i~0)) (and (<= 33 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 33) (<= 66 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 66)) (and (<= ULTIMATE.start_main_~j~0 8) (<= 8 ULTIMATE.start_main_~j~0) (<= 4 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 4)) (and (<= ULTIMATE.start_main_~i~0 41) (<= ULTIMATE.start_main_~j~0 82) (<= 82 ULTIMATE.start_main_~j~0) (<= 41 ULTIMATE.start_main_~i~0)) (and (<= 134 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 134) (<= 67 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 67)) (and (<= ULTIMATE.start_main_~j~0 44) (<= ULTIMATE.start_main_~i~0 22) (<= 22 ULTIMATE.start_main_~i~0) (<= 44 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 58) (<= 116 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 116) (<= 58 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 39) (<= ULTIMATE.start_main_~j~0 78) (<= 78 ULTIMATE.start_main_~j~0) (<= 39 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 72) (<= 72 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 36) (<= 36 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~j~0 96) (<= 96 ULTIMATE.start_main_~j~0) (<= 48 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 48)) (and (<= ULTIMATE.start_main_~j~0 174) (<= ULTIMATE.start_main_~i~0 87) (<= 174 ULTIMATE.start_main_~j~0) (<= 87 ULTIMATE.start_main_~i~0)) (and (<= 44 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 44) (<= ULTIMATE.start_main_~j~0 88) (<= 88 ULTIMATE.start_main_~j~0))) [2021-10-11 02:32:28,776 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-11 02:32:28,777 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:32:28,777 INFO L265 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: true [2021-10-11 02:32:28,777 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-11 02:32:28,777 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-11 02:32:28,777 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-11 02:32:28,777 INFO L262 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-11 02:32:28,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:28 BoogieIcfgContainer [2021-10-11 02:32:28,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:28,830 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:28,830 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:28,830 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:28,831 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:43" (3/4) ... [2021-10-11 02:32:28,834 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:32:28,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:32:28,842 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:32:28,842 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:32:28,842 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:32:28,885 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d8342c-aba1-4d3e-a255-89f030ffd35c/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:28,885 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:28,886 INFO L168 Benchmark]: Toolchain (without parser) took 46283.61 ms. Allocated memory was 96.5 MB in the beginning and 434.1 MB in the end (delta: 337.6 MB). Free memory was 64.2 MB in the beginning and 226.3 MB in the end (delta: -162.1 MB). Peak memory consumption was 175.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:28,886 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:28,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.26 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.8 MB in the beginning and 93.5 MB in the end (delta: -29.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:28,887 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.20 ms. Allocated memory is still 117.4 MB. Free memory was 93.5 MB in the beginning and 92.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:28,887 INFO L168 Benchmark]: Boogie Preprocessor took 20.07 ms. Allocated memory is still 117.4 MB. Free memory was 92.1 MB in the beginning and 91.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:28,888 INFO L168 Benchmark]: RCFGBuilder took 301.07 ms. Allocated memory is still 117.4 MB. Free memory was 91.0 MB in the beginning and 78.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:28,888 INFO L168 Benchmark]: TraceAbstraction took 45618.08 ms. Allocated memory was 117.4 MB in the beginning and 434.1 MB in the end (delta: 316.7 MB). Free memory was 77.7 MB in the beginning and 229.5 MB in the end (delta: -151.8 MB). Peak memory consumption was 251.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:28,889 INFO L168 Benchmark]: Witness Printer took 54.79 ms. Allocated memory is still 434.1 MB. Free memory was 229.5 MB in the beginning and 226.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:28,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.26 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.8 MB in the beginning and 93.5 MB in the end (delta: -29.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.20 ms. Allocated memory is still 117.4 MB. Free memory was 93.5 MB in the beginning and 92.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.07 ms. Allocated memory is still 117.4 MB. Free memory was 92.1 MB in the beginning and 91.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 301.07 ms. Allocated memory is still 117.4 MB. Free memory was 91.0 MB in the beginning and 78.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 45618.08 ms. Allocated memory was 117.4 MB in the beginning and 434.1 MB in the end (delta: 316.7 MB). Free memory was 77.7 MB in the beginning and 229.5 MB in the end (delta: -151.8 MB). Peak memory consumption was 251.7 MB. Max. memory is 16.1 GB. * Witness Printer took 54.79 ms. Allocated memory is still 434.1 MB. Free memory was 229.5 MB in the beginning and 226.3 MB in the end (delta: 3.2 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: 23]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((59 <= i && j <= 118) && 118 <= j) && i <= 59) || (((i < 99 && 98 <= i) && j <= 196) && 196 <= j)) || (((23 <= i && j <= 46) && 46 <= j) && i <= 23)) || (((63 <= i && j <= 126) && i <= 63) && 126 <= j)) || (((176 <= j && i <= 88) && j <= 176) && 88 <= i)) || (((i <= 82 && 164 <= j) && 82 <= i) && j <= 164)) || (((j <= 144 && 72 <= i) && 144 <= j) && i <= 72)) || (((i <= 3 && 6 <= j) && 3 <= i) && j <= 6)) || (((156 <= j && i <= 78) && j <= 156) && 78 <= i)) || (((i <= 92 && 184 <= j) && j <= 184) && 92 <= i)) || (((68 <= i && i <= 68) && j <= 136) && 136 <= j)) || (((43 <= i && j <= 86) && i <= 43) && 86 <= j)) || (((j <= 148 && 148 <= j) && i <= 74) && 74 <= i)) || (((j <= 94 && 94 <= j) && i <= 47) && 47 <= i)) || (((j <= 58 && i <= 29) && 29 <= i) && 58 <= j)) || (((186 <= j && i <= 93) && 93 <= i) && j <= 186)) || (((j <= 128 && i <= 64) && 64 <= i) && 128 <= j)) || (((j <= 30 && i <= 15) && 15 <= i) && 30 <= j)) || (((178 <= j && i <= 89) && 89 <= i) && j <= 178)) || (((46 <= i && i <= 46) && 92 <= j) && j <= 92)) || (((i <= 16 && 16 <= i) && j <= 32) && 32 <= j)) || (((i <= 70 && 70 <= i) && j <= 140) && 140 <= j)) || (((i <= 52 && 52 <= i) && 104 <= j) && j <= 104)) || (((i <= 26 && j <= 52) && 26 <= i) && 52 <= j)) || (((28 <= j && i <= 14) && 14 <= i) && j <= 28)) || (((12 <= i && j <= 24) && i <= 12) && 24 <= j)) || (((85 <= i && i <= 85) && j <= 170) && 170 <= j)) || (((20 <= j && 10 <= i) && i <= 10) && j <= 20)) || (((79 <= i && j <= 158) && 158 <= j) && i <= 79)) || (((j <= 194 && i < 98) && 194 <= j) && 97 <= i)) || (((190 <= j && i < 96) && j <= 190) && 95 <= i)) || (((j <= 100 && 50 <= i) && i <= 50) && 100 <= j)) || (((84 <= j && i <= 42) && 42 <= i) && j <= 84)) || (((154 <= j && i <= 77) && 77 <= i) && j <= 154)) || (((172 <= j && j <= 172) && i <= 86) && 86 <= i)) || (((i <= 28 && 56 <= j) && 28 <= i) && j <= 56)) || (((i <= 75 && 150 <= j) && j <= 150) && 75 <= i)) || (((84 <= i && j <= 168) && 168 <= j) && i <= 84)) || (((114 <= j && i <= 57) && 57 <= i) && j <= 114)) || (((i <= 5 && j <= 10) && 5 <= i) && 10 <= j)) || (((91 <= i && i <= 91) && j <= 182) && 182 <= j)) || (((i <= 55 && 110 <= j) && j <= 110) && 55 <= i)) || (((j <= 68 && 68 <= j) && i <= 34) && 34 <= i)) || (((i <= 66 && 132 <= j) && 66 <= i) && j <= 132)) || (((62 <= j && i <= 31) && j <= 62) && 31 <= i)) || (((25 <= i && i <= 25) && 50 <= j) && j <= 50)) || (((i <= 83 && j <= 166) && 166 <= j) && 83 <= i)) || (((j <= 130 && 65 <= i) && 130 <= j) && i <= 65)) || ((199 < j && 100 <= i) && j <= 200)) || (((j <= 146 && i <= 73) && 73 <= i) && 146 <= j)) || (((80 <= j && i <= 40) && 40 <= i) && j <= 80)) || (((16 <= j && j <= 16) && 8 <= i) && i <= 8)) || (((j <= 2 && 2 <= j) && i <= 1) && 1 <= i)) || (((162 <= j && 81 <= i) && i <= 81) && j <= 162)) || (((i <= 24 && j <= 48) && 48 <= j) && 24 <= i)) || (((69 <= i && i <= 69) && j <= 138) && 138 <= j)) || (((j <= 180 && i <= 90) && 180 <= j) && 90 <= i)) || (((j <= 142 && 71 <= i) && i <= 71) && 142 <= j)) || (((i <= 37 && 74 <= j) && 37 <= i) && j <= 74)) || (((54 <= i && 108 <= j) && j <= 108) && i <= 54)) || (((j <= 22 && i <= 11) && 11 <= i) && 22 <= j)) || (((102 <= j && i <= 51) && j <= 102) && 51 <= i)) || (((j <= 192 && i < 97) && 96 <= i) && 192 <= j)) || (((99 <= i && i < 100) && j <= 198) && 198 <= j)) || (((45 <= i && i <= 45) && j <= 90) && 90 <= j)) || (((j <= 12 && i <= 6) && 6 <= i) && 12 <= j)) || (((13 <= i && j <= 26) && 26 <= j) && i <= 13)) || (((j <= 34 && 34 <= j) && i <= 17) && 17 <= i)) || (((0 <= i && 0 <= j) && i <= 0) && j <= 0)) || (((122 <= j && i <= 61) && j <= 122) && 61 <= i)) || (((j <= 4 && 2 <= i) && 4 <= j) && i <= 2)) || (((i <= 21 && 42 <= j) && 21 <= i) && j <= 42)) || (((i <= 27 && j <= 54) && 54 <= j) && 27 <= i)) || (((70 <= j && 35 <= i) && i <= 35) && j <= 70)) || (((32 <= i && 64 <= j) && i <= 32) && j <= 64)) || (((49 <= i && i <= 49) && j <= 98) && 98 <= j)) || (((36 <= j && 18 <= i) && j <= 36) && i <= 18)) || (((j <= 120 && 60 <= i) && 120 <= j) && i <= 60)) || (((j <= 60 && 60 <= j) && 30 <= i) && i <= 30)) || (((38 <= j && i <= 19) && j <= 38) && 19 <= i)) || (((i <= 38 && j <= 76) && 38 <= i) && 76 <= j)) || (((i <= 80 && j <= 160) && 80 <= i) && 160 <= j)) || (((j <= 14 && 7 <= i) && 14 <= j) && i <= 7)) || (((56 <= i && 112 <= j) && i <= 56) && j <= 112)) || (((j <= 152 && 152 <= j) && i <= 76) && 76 <= i)) || (((20 <= i && 40 <= j) && j <= 40) && i <= 20)) || (((i <= 53 && 53 <= i) && j <= 106) && 106 <= j)) || (((124 <= j && i <= 62) && 62 <= i) && j <= 124)) || (((18 <= j && j <= 18) && i <= 9) && 9 <= i)) || (((j <= 188 && 188 <= j) && i <= 94) && 94 <= i)) || (((33 <= i && i <= 33) && 66 <= j) && j <= 66)) || (((j <= 8 && 8 <= j) && 4 <= i) && i <= 4)) || (((i <= 41 && j <= 82) && 82 <= j) && 41 <= i)) || (((134 <= j && j <= 134) && 67 <= i) && i <= 67)) || (((j <= 44 && i <= 22) && 22 <= i) && 44 <= j)) || (((i <= 58 && 116 <= j) && j <= 116) && 58 <= i)) || (((i <= 39 && j <= 78) && 78 <= j) && 39 <= i)) || (((j <= 72 && 72 <= j) && i <= 36) && 36 <= i)) || (((j <= 96 && 96 <= j) && 48 <= i) && i <= 48)) || (((j <= 174 && i <= 87) && 174 <= j) && 87 <= i)) || (((44 <= i && i <= 44) && j <= 88) && 88 <= j) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 41.6s, OverallIterations: 9, TraceHistogramMax: 101, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 1 SDslu, 234 SDs, 0 SdLazy, 11120 SolverSat, 110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1328 GetRequests, 812 SyntacticMatches, 6 SemanticMatches, 510 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1438 ImplicationChecksByTransitivity, 27.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 104 NumberOfFragments, 1312 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 2 FomulaSimplificationsInter, 264 FormulaSimplificationTreeSizeReductionInter, 3.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 26.0s InterpolantComputationTime, 735 NumberOfCodeBlocks, 735 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 1024 ConstructedInterpolants, 0 QuantifiedInterpolants, 368474 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1672 ConjunctsInSsa, 394 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 5151/37896 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...