./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG --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 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:57:24,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:57:25,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:57:25,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:57:25,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:57:25,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:57:25,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:57:25,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:57:25,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:57:25,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:57:25,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:57:25,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:57:25,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:57:25,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:57:25,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:57:25,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:57:25,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:57:25,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:57:25,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:57:25,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:57:25,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:57:25,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:57:25,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:57:25,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:57:25,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:57:25,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:57:25,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:57:25,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:57:25,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:57:25,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:57:25,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:57:25,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:57:25,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:57:25,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:57:25,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:57:25,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:57:25,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:57:25,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:57:25,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:57:25,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:57:25,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:57:25,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:57:25,203 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:57:25,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:57:25,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:57:25,206 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:57:25,206 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:57:25,207 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:57:25,207 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:57:25,207 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:57:25,215 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:57:25,216 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:57:25,217 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:57:25,218 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:57:25,218 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:57:25,218 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:57:25,219 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:57:25,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:57:25,220 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:57:25,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:57:25,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:57:25,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:57:25,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:57:25,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:57:25,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:57:25,222 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:57:25,222 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:57:25,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:57:25,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:57:25,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:57:25,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:57:25,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:57:25,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:57:25,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:57:25,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:57:25,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:57:25,225 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:57:25,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:57:25,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:57:25,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:57:25,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:57:25,226 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_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 [2021-10-29 04:57:25,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:57:25,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:57:25,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:57:25,539 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:57:25,540 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:57:25,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2021-10-29 04:57:25,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/data/8d7af1641/8079b3a3a10a462da63ae0b9e07cadaf/FLAG340737766 [2021-10-29 04:57:26,117 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:57:26,117 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2021-10-29 04:57:26,124 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/data/8d7af1641/8079b3a3a10a462da63ae0b9e07cadaf/FLAG340737766 [2021-10-29 04:57:26,496 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/data/8d7af1641/8079b3a3a10a462da63ae0b9e07cadaf [2021-10-29 04:57:26,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:57:26,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:57:26,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:57:26,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:57:26,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:57:26,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:26" (1/1) ... [2021-10-29 04:57:26,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73697096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26, skipping insertion in model container [2021-10-29 04:57:26,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:26" (1/1) ... [2021-10-29 04:57:26,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:57:26,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:57:26,720 WARN L228 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_de5a5794-d4e4-41c0-b2b3-0faea559cf47/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2021-10-29 04:57:26,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:57:26,743 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:57:26,757 WARN L228 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_de5a5794-d4e4-41c0-b2b3-0faea559cf47/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2021-10-29 04:57:26,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:57:26,778 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:57:26,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26 WrapperNode [2021-10-29 04:57:26,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:57:26,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:57:26,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:57:26,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:57:26,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26" (1/1) ... [2021-10-29 04:57:26,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26" (1/1) ... [2021-10-29 04:57:26,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:57:26,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:57:26,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:57:26,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:57:26,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26" (1/1) ... [2021-10-29 04:57:26,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26" (1/1) ... [2021-10-29 04:57:26,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26" (1/1) ... [2021-10-29 04:57:26,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26" (1/1) ... [2021-10-29 04:57:26,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26" (1/1) ... [2021-10-29 04:57:26,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26" (1/1) ... [2021-10-29 04:57:26,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26" (1/1) ... [2021-10-29 04:57:26,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:57:26,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:57:26,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:57:26,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:57:26,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26" (1/1) ... [2021-10-29 04:57:26,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:57:26,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:26,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:57:26,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:57:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:57:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:57:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:57:26,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:57:27,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:57:27,233 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-29 04:57:27,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:57:27 BoogieIcfgContainer [2021-10-29 04:57:27,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:57:27,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:57:27,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:57:27,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:57:27,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:57:26" (1/3) ... [2021-10-29 04:57:27,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a865d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:57:27, skipping insertion in model container [2021-10-29 04:57:27,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:26" (2/3) ... [2021-10-29 04:57:27,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a865d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:57:27, skipping insertion in model container [2021-10-29 04:57:27,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:57:27" (3/3) ... [2021-10-29 04:57:27,246 INFO L111 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2021-10-29 04:57:27,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:57:27,254 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-29 04:57:27,313 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:57:27,339 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:57:27,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-29 04:57:27,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 32 states have (on average 1.6875) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:27,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:57:27,374 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:27,375 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:27,376 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-29 04:57:27,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:27,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1231245506, now seen corresponding path program 1 times [2021-10-29 04:57:27,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:27,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462270440] [2021-10-29 04:57:27,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:27,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:27,553 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:57:27,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462270440] [2021-10-29 04:57:27,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462270440] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:27,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:27,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:57:27,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044104165] [2021-10-29 04:57:27,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:57:27,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:57:27,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:57:27,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:57:27,579 INFO L87 Difference]: Start difference. First operand has 41 states, 32 states have (on average 1.6875) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:27,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:27,615 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2021-10-29 04:57:27,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:57:27,616 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 04:57:27,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:27,627 INFO L225 Difference]: With dead ends: 78 [2021-10-29 04:57:27,628 INFO L226 Difference]: Without dead ends: 38 [2021-10-29 04:57:27,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:57:27,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-29 04:57:27,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-29 04:57:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.3) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:27,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-10-29 04:57:27,667 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 8 [2021-10-29 04:57:27,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:27,668 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-10-29 04:57:27,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:27,668 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-10-29 04:57:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:57:27,669 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:27,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:27,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:57:27,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-29 04:57:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:27,671 INFO L85 PathProgramCache]: Analyzing trace with hash 431783130, now seen corresponding path program 1 times [2021-10-29 04:57:27,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:27,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680588618] [2021-10-29 04:57:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:27,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:27,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:57:27,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680588618] [2021-10-29 04:57:27,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680588618] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:27,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:27,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:57:27,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543625497] [2021-10-29 04:57:27,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:57:27,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:57:27,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:57:27,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:27,776 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:27,894 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-10-29 04:57:27,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:57:27,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 04:57:27,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:27,898 INFO L225 Difference]: With dead ends: 42 [2021-10-29 04:57:27,898 INFO L226 Difference]: Without dead ends: 36 [2021-10-29 04:57:27,899 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:57:27,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-29 04:57:27,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-10-29 04:57:27,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-10-29 04:57:27,908 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 9 [2021-10-29 04:57:27,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:27,908 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-10-29 04:57:27,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:27,909 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-10-29 04:57:27,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 04:57:27,910 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:27,910 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:27,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:57:27,915 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-29 04:57:27,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:27,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1668081891, now seen corresponding path program 1 times [2021-10-29 04:57:27,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:27,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482721720] [2021-10-29 04:57:27,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:27,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:28,081 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:57:28,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482721720] [2021-10-29 04:57:28,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482721720] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:28,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:28,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 04:57:28,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258187808] [2021-10-29 04:57:28,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:57:28,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:57:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:57:28,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:57:28,085 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:28,231 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-10-29 04:57:28,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:57:28,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 04:57:28,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:28,237 INFO L225 Difference]: With dead ends: 48 [2021-10-29 04:57:28,238 INFO L226 Difference]: Without dead ends: 44 [2021-10-29 04:57:28,239 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:57:28,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-29 04:57:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2021-10-29 04:57:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 41 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:28,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-10-29 04:57:28,263 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 11 [2021-10-29 04:57:28,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:28,264 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-10-29 04:57:28,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:28,265 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-10-29 04:57:28,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 04:57:28,267 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:28,268 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:28,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 04:57:28,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-29 04:57:28,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:28,270 INFO L85 PathProgramCache]: Analyzing trace with hash 494361339, now seen corresponding path program 1 times [2021-10-29 04:57:28,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:28,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288616953] [2021-10-29 04:57:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:28,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:28,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:57:28,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288616953] [2021-10-29 04:57:28,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288616953] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:28,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:28,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:57:28,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940093717] [2021-10-29 04:57:28,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:57:28,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:57:28,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:57:28,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:57:28,392 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:28,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:28,480 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2021-10-29 04:57:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:57:28,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 04:57:28,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:28,485 INFO L225 Difference]: With dead ends: 52 [2021-10-29 04:57:28,486 INFO L226 Difference]: Without dead ends: 50 [2021-10-29 04:57:28,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:57:28,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-29 04:57:28,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2021-10-29 04:57:28,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.205128205128205) internal successors, (47), 43 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-10-29 04:57:28,504 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 13 [2021-10-29 04:57:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:28,504 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-10-29 04:57:28,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-10-29 04:57:28,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 04:57:28,506 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:28,506 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:28,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 04:57:28,513 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-29 04:57:28,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:28,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1775966595, now seen corresponding path program 1 times [2021-10-29 04:57:28,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:28,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038073351] [2021-10-29 04:57:28,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:28,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:28,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:57:28,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038073351] [2021-10-29 04:57:28,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038073351] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:28,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:28,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 04:57:28,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478087418] [2021-10-29 04:57:28,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:57:28,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:57:28,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:57:28,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:57:28,616 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:28,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:28,775 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2021-10-29 04:57:28,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 04:57:28,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 04:57:28,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:28,779 INFO L225 Difference]: With dead ends: 70 [2021-10-29 04:57:28,780 INFO L226 Difference]: Without dead ends: 56 [2021-10-29 04:57:28,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:57:28,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-29 04:57:28,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2021-10-29 04:57:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-10-29 04:57:28,798 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 15 [2021-10-29 04:57:28,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:28,798 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-10-29 04:57:28,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-10-29 04:57:28,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 04:57:28,800 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:28,800 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:28,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 04:57:28,801 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-29 04:57:28,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:28,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1659965986, now seen corresponding path program 1 times [2021-10-29 04:57:28,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:28,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572437371] [2021-10-29 04:57:28,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:28,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:28,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:57:28,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572437371] [2021-10-29 04:57:28,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572437371] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:28,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:57:28,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 04:57:28,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258654804] [2021-10-29 04:57:28,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:57:28,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:57:28,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:57:28,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:57:28,919 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:29,037 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-10-29 04:57:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 04:57:29,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 04:57:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:29,039 INFO L225 Difference]: With dead ends: 61 [2021-10-29 04:57:29,039 INFO L226 Difference]: Without dead ends: 59 [2021-10-29 04:57:29,039 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-29 04:57:29,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-29 04:57:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2021-10-29 04:57:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-10-29 04:57:29,046 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 15 [2021-10-29 04:57:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:29,047 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-10-29 04:57:29,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:29,047 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-10-29 04:57:29,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 04:57:29,048 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:29,048 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:29,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 04:57:29,049 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-29 04:57:29,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:29,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1079570878, now seen corresponding path program 1 times [2021-10-29 04:57:29,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:29,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034585721] [2021-10-29 04:57:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:29,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:29,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:29,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:57:29,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034585721] [2021-10-29 04:57:29,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034585721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:57:29,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971985924] [2021-10-29 04:57:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:29,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:57:29,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:29,119 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:57:29,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:57:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:29,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 04:57:29,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:29,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:29,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971985924] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:57:29,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [562114794] [2021-10-29 04:57:29,521 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-29 04:57:29,522 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:57:29,529 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:57:29,537 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:57:29,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:57:29,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:29,620 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:57:29,626 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:29,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:57:29,631 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:57:29,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:29,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:57:29,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:57:29,670 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-10-29 04:57:29,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:29,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:57:29,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:29,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:57:29,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:29,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:57:29,704 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:57:29,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:29,732 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:29,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:29,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:29,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:29,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:29,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:57:29,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:29,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:57:29,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:29,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:57:29,776 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:57:29,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:29,794 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:29,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:29,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:57:29,802 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:57:29,802 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:57:29,827 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size [2021-10-29 04:57:29,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 04:57:29,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:29,893 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-29 04:57:29,911 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-29 04:57:29,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-29 04:57:29,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:29,958 INFO L185 QuantifierPusher]: treesize reduction 7, result has 94.8 percent of original size 127 [2021-10-29 04:57:29,976 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.4 percent of original size [2021-10-29 04:57:29,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-29 04:57:29,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,114 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-29 04:57:30,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:57:30,135 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:30,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:30,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:30,168 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:30,178 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-10-29 04:57:30,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 04:57:30,201 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-29 04:57:30,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:57:30,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:30,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:30,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:30,259 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:30,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:30,453 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:57:32,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [562114794] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:57:32,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:57:32,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 5, 5] total 20 [2021-10-29 04:57:32,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878970613] [2021-10-29 04:57:32,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-29 04:57:32,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:57:32,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-29 04:57:32,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-29 04:57:32,284 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:34,669 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-10-29 04:57:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-29 04:57:34,670 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-29 04:57:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:34,671 INFO L225 Difference]: With dead ends: 52 [2021-10-29 04:57:34,671 INFO L226 Difference]: Without dead ends: 50 [2021-10-29 04:57:34,672 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2021-10-29 04:57:34,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-29 04:57:34,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-29 04:57:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 49 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-10-29 04:57:34,681 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 23 [2021-10-29 04:57:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:34,681 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-10-29 04:57:34,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-10-29 04:57:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 04:57:34,682 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:34,682 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:34,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:34,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-29 04:57:34,902 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-29 04:57:34,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:34,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1055594250, now seen corresponding path program 1 times [2021-10-29 04:57:34,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:34,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644114172] [2021-10-29 04:57:34,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:34,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:35,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:57:35,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644114172] [2021-10-29 04:57:35,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644114172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:57:35,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107898320] [2021-10-29 04:57:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:35,068 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:57:35,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:35,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:57:35,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 04:57:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:35,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 04:57:35,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:35,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:35,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107898320] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:57:35,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [134949741] [2021-10-29 04:57:35,647 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-10-29 04:57:35,647 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:57:35,648 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:57:35,648 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:57:35,649 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:57:35,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,684 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:57:35,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:57:35,686 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:57:35,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:57:35,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:57:35,699 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 10=[|v_#valid_10|]} [2021-10-29 04:57:35,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:35,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:57:35,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:57:35,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:57:35,711 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:57:35,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:35,724 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:35,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:35,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:35,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:35,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:57:35,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:57:35,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:57:35,744 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:57:35,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:35,749 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:57:35,753 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:57:35,753 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:57:35,768 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size [2021-10-29 04:57:35,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 04:57:35,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,786 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-29 04:57:35,795 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-29 04:57:35,805 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-29 04:57:35,811 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-29 04:57:35,821 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-29 04:57:35,826 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size [2021-10-29 04:57:35,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 04:57:35,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:35,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:35,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:35,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:35,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:35,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:35,880 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-29 04:57:35,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:57:35,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:35,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,916 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:35,929 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-10-29 04:57:35,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 04:57:35,947 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-29 04:57:35,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:57:35,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:35,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:35,984 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:35,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:36,137 INFO L180 QuantifierPusher]: treesize reduction 32, result has 64.4 percent of original size [2021-10-29 04:57:36,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 04:57:36,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:36,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-29 04:57:36,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:36,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:36,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:36,178 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:36,183 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:57:38,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:57:38,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:57:38,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-10-29 04:57:38,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205641965] [2021-10-29 04:57:38,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-29 04:57:38,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:57:38,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-29 04:57:38,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=910, Unknown=0, NotChecked=0, Total=1056 [2021-10-29 04:57:38,360 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:39,165 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2021-10-29 04:57:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-29 04:57:39,166 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-29 04:57:39,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:39,168 INFO L225 Difference]: With dead ends: 115 [2021-10-29 04:57:39,169 INFO L226 Difference]: Without dead ends: 88 [2021-10-29 04:57:39,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 43 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=541, Invalid=2765, Unknown=0, NotChecked=0, Total=3306 [2021-10-29 04:57:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-29 04:57:39,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2021-10-29 04:57:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 69 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2021-10-29 04:57:39,200 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 25 [2021-10-29 04:57:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:39,201 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2021-10-29 04:57:39,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2021-10-29 04:57:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 04:57:39,202 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:39,202 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:39,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:39,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:57:39,427 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-29 04:57:39,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:39,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1914628965, now seen corresponding path program 1 times [2021-10-29 04:57:39,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:39,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085741638] [2021-10-29 04:57:39,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:39,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:39,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:57:39,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085741638] [2021-10-29 04:57:39,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085741638] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:57:39,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889700407] [2021-10-29 04:57:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:39,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:57:39,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:39,527 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:57:39,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 04:57:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:39,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 04:57:39,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:39,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:39,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889700407] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:57:39,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2087201661] [2021-10-29 04:57:39,974 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-29 04:57:39,974 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:57:39,975 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:57:39,975 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:57:39,975 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:57:39,985 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:39,987 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:57:39,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:39,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:57:39,989 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:57:39,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:39,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:57:39,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:57:40,011 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 10=[|v_#valid_11|]} [2021-10-29 04:57:40,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:40,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:57:40,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:40,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:57:40,021 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:40,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:57:40,022 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:57:40,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,028 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:40,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:40,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:40,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:40,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:40,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:57:40,048 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:40,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:57:40,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:40,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:57:40,054 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:57:40,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,061 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:40,062 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:40,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:57:40,064 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:57:40,065 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:57:40,075 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size [2021-10-29 04:57:40,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 04:57:40,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:40,089 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-29 04:57:40,095 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-29 04:57:40,102 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-29 04:57:40,106 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-29 04:57:40,114 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-29 04:57:40,119 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size [2021-10-29 04:57:40,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 04:57:40,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,158 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-29 04:57:40,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:57:40,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:40,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:40,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:40,184 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:40,188 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-10-29 04:57:40,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 04:57:40,202 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-29 04:57:40,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:57:40,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:40,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:40,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:40,227 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:40,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:40,324 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:57:41,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:57:41,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:57:41,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-10-29 04:57:41,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634355529] [2021-10-29 04:57:41,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 04:57:41,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:57:41,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 04:57:41,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-10-29 04:57:41,801 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:42,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:42,014 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2021-10-29 04:57:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 04:57:42,014 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-29 04:57:42,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:42,015 INFO L225 Difference]: With dead ends: 72 [2021-10-29 04:57:42,016 INFO L226 Difference]: Without dead ends: 70 [2021-10-29 04:57:42,017 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 51 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=178, Invalid=878, Unknown=0, NotChecked=0, Total=1056 [2021-10-29 04:57:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-29 04:57:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-29 04:57:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.121212121212121) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-10-29 04:57:42,029 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 25 [2021-10-29 04:57:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:42,030 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-10-29 04:57:42,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-10-29 04:57:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-29 04:57:42,031 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:42,032 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:42,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:42,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-29 04:57:42,247 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-29 04:57:42,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:42,247 INFO L85 PathProgramCache]: Analyzing trace with hash 162589740, now seen corresponding path program 2 times [2021-10-29 04:57:42,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:42,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861465254] [2021-10-29 04:57:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:42,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:42,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:57:42,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861465254] [2021-10-29 04:57:42,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861465254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:57:42,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548448610] [2021-10-29 04:57:42,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 04:57:42,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:57:42,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:42,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:57:42,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 04:57:42,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-29 04:57:42,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:57:42,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-29 04:57:42,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:42,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:43,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548448610] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:57:43,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1197006940] [2021-10-29 04:57:43,149 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-29 04:57:43,149 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:57:43,150 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:57:43,150 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:57:43,150 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:57:43,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,158 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:57:43,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:57:43,160 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:57:43,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:57:43,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:57:43,166 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 10=[|v_#valid_12|]} [2021-10-29 04:57:43,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:43,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:57:43,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:57:43,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:57:43,176 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:57:43,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,181 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:43,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:43,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:43,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:43,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:57:43,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:57:43,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:57:43,203 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:57:43,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,207 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:57:43,211 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:57:43,211 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:57:43,219 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size [2021-10-29 04:57:43,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 04:57:43,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,234 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-29 04:57:43,240 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-29 04:57:43,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-29 04:57:43,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,256 INFO L185 QuantifierPusher]: treesize reduction 7, result has 94.8 percent of original size 127 [2021-10-29 04:57:43,260 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.4 percent of original size [2021-10-29 04:57:43,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-29 04:57:43,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,304 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-29 04:57:43,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:57:43,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:43,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,325 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:43,328 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-10-29 04:57:43,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 04:57:43,341 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-29 04:57:43,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:57:43,351 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:43,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:43,368 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:43,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:43,461 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:57:45,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:57:45,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:57:45,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-10-29 04:57:45,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138975291] [2021-10-29 04:57:45,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-29 04:57:45,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:57:45,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-29 04:57:45,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2021-10-29 04:57:45,068 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:45,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:45,720 INFO L93 Difference]: Finished difference Result 122 states and 126 transitions. [2021-10-29 04:57:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-29 04:57:45,721 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-29 04:57:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:45,723 INFO L225 Difference]: With dead ends: 122 [2021-10-29 04:57:45,723 INFO L226 Difference]: Without dead ends: 120 [2021-10-29 04:57:45,725 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 75 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=440, Invalid=2212, Unknown=0, NotChecked=0, Total=2652 [2021-10-29 04:57:45,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-29 04:57:45,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 74. [2021-10-29 04:57:45,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.1) internal successors, (77), 73 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-10-29 04:57:45,753 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 35 [2021-10-29 04:57:45,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:45,754 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-10-29 04:57:45,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:45,761 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-10-29 04:57:45,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-29 04:57:45,767 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:45,768 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:45,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:45,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:57:45,995 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-29 04:57:45,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1565920216, now seen corresponding path program 2 times [2021-10-29 04:57:45,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:45,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004562200] [2021-10-29 04:57:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:45,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:46,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:57:46,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004562200] [2021-10-29 04:57:46,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004562200] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:57:46,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517961224] [2021-10-29 04:57:46,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 04:57:46,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:57:46,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:46,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:57:46,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 04:57:46,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-29 04:57:46,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:57:46,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-29 04:57:46,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-29 04:57:46,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-29 04:57:46,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517961224] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:57:46,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [842666299] [2021-10-29 04:57:46,906 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-10-29 04:57:46,906 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:57:46,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:57:46,907 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:57:46,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:57:46,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,919 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:57:46,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:57:46,921 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:57:46,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:57:46,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:57:46,927 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 10=[|v_#valid_13|]} [2021-10-29 04:57:46,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:46,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:57:46,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:57:46,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:57:46,938 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:57:46,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:46,941 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:46,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:46,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:46,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:46,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:57:46,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:57:46,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:57:46,961 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:57:46,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:46,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:57:46,968 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:57:46,968 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:57:46,982 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size [2021-10-29 04:57:46,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 04:57:46,991 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:46,996 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-29 04:57:47,002 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-29 04:57:47,008 INFO L185 QuantifierPusher]: treesize reduction 5, result has 96.0 percent of original size 120 [2021-10-29 04:57:47,014 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.6 percent of original size [2021-10-29 04:57:47,021 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-29 04:57:47,026 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size [2021-10-29 04:57:47,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 04:57:47,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,069 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-29 04:57:47,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:57:47,075 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:47,080 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:47,084 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:47,088 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:47,091 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-10-29 04:57:47,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 04:57:47,103 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-29 04:57:47,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:57:47,113 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:47,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:47,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:47,127 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:47,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:47,232 INFO L180 QuantifierPusher]: treesize reduction 32, result has 64.4 percent of original size [2021-10-29 04:57:47,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 04:57:47,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:47,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-29 04:57:47,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:47,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:47,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:47,272 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:47,277 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:57:49,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:57:49,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:57:49,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 18 [2021-10-29 04:57:49,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201849340] [2021-10-29 04:57:49,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-29 04:57:49,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:57:49,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-29 04:57:49,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2021-10-29 04:57:49,459 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:49,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:49,823 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2021-10-29 04:57:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-29 04:57:49,823 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-29 04:57:49,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:49,824 INFO L225 Difference]: With dead ends: 74 [2021-10-29 04:57:49,825 INFO L226 Difference]: Without dead ends: 56 [2021-10-29 04:57:49,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 99 SyntacticMatches, 12 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=328, Invalid=1834, Unknown=0, NotChecked=0, Total=2162 [2021-10-29 04:57:49,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-29 04:57:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-29 04:57:49,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:49,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-10-29 04:57:49,836 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 45 [2021-10-29 04:57:49,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:49,836 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-10-29 04:57:49,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-10-29 04:57:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-29 04:57:49,839 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:49,839 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:49,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:50,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-10-29 04:57:50,047 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-10-29 04:57:50,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:50,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1979889530, now seen corresponding path program 3 times [2021-10-29 04:57:50,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:50,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156564669] [2021-10-29 04:57:50,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:50,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:57:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-29 04:57:50,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:57:50,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156564669] [2021-10-29 04:57:50,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156564669] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:57:50,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812460506] [2021-10-29 04:57:50,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 04:57:50,291 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:57:50,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:50,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:57:50,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-29 04:57:50,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 04:57:50,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:57:50,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-29 04:57:50,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:57:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:51,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:57:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:57:51,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812460506] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:57:51,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2032861291] [2021-10-29 04:57:51,996 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-29 04:57:51,996 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:57:51,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:57:51,997 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:57:51,997 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:57:52,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,004 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:57:52,005 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:57:52,006 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:57:52,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 04:57:52,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-29 04:57:52,012 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 10=[|v_#valid_14|]} [2021-10-29 04:57:52,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:52,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 04:57:52,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:57:52,020 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 04:57:52,021 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:57:52,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,024 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:52,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:52,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:52,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:57:52,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 04:57:52,037 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:57:52,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 04:57:52,040 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:57:52,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,043 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,045 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-10-29 04:57:52,045 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:57:52,046 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:87 [2021-10-29 04:57:52,056 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size [2021-10-29 04:57:52,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 04:57:52,072 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,081 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-10-29 04:57:52,085 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-10-29 04:57:52,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-29 04:57:52,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,100 INFO L185 QuantifierPusher]: treesize reduction 7, result has 94.8 percent of original size 127 [2021-10-29 04:57:52,105 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.4 percent of original size [2021-10-29 04:57:52,109 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-29 04:57:52,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,143 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-29 04:57:52,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:57:52,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:52,163 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,167 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:52,171 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-10-29 04:57:52,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 04:57:52,183 INFO L180 QuantifierPusher]: treesize reduction 24, result has 79.8 percent of original size [2021-10-29 04:57:52,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 04:57:52,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-10-29 04:57:52,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:57:52,209 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.3 percent of original size 78 [2021-10-29 04:57:52,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:52,277 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:57:54,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:57:54,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:57:54,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 28 [2021-10-29 04:57:54,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878266699] [2021-10-29 04:57:54,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-29 04:57:54,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:57:54,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-29 04:57:54,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1343, Unknown=0, NotChecked=0, Total=1560 [2021-10-29 04:57:54,172 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:57:55,062 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2021-10-29 04:57:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-29 04:57:55,063 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-29 04:57:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:57:55,063 INFO L225 Difference]: With dead ends: 73 [2021-10-29 04:57:55,063 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:57:55,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 124 SyntacticMatches, 14 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=862, Invalid=3968, Unknown=0, NotChecked=0, Total=4830 [2021-10-29 04:57:55,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:57:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:57:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:57:55,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2021-10-29 04:57:55,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:57:55,066 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:57:55,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:57:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:57:55,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:57:55,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:57:55,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:57:55,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:57:55,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:57:55,069 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:57:55,070 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:57:55,070 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:57:55,070 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:57:55,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:55,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-10-29 04:57:55,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:57:55,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:55,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:55,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:55,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:55,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:55,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:55,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:55,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:55,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:57:57,431 INFO L853 garLoopResultBuilder]: At program point L18-17(lines 17 22) the Hoare annotation is: (let ((.cse20 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= (select |#valid| |#t~string1.base|) 1)) (.cse1 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse2 (<= 0 ULTIMATE.start_main_~buf~0)) (.cse3 (= (select .cse20 (+ |#t~string0.offset| 1)) 0)) (.cse4 (= 2 (select |#length| |#t~string0.base|))) (.cse6 (<= 0 ULTIMATE.start_main_~in~0)) (.cse7 (<= ULTIMATE.start_main_~bufferlen~0 2147483647)) (.cse8 (= (select |#valid| 0) 0)) (.cse9 (= (select |#valid| |#t~string0.base|) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse12 (= (select |#length| |#t~string1.base|) 9)) (.cse13 (= 48 (select .cse20 |#t~string0.offset|))) (.cse14 (= |#t~string1.offset| 0)) (.cse15 (< 0 ULTIMATE.start_main_~inlen~0)) (.cse16 (= |#t~string0.offset| 0)) (.cse5 (+ ULTIMATE.start_main_~buflim~0 1)) (.cse17 (<= ULTIMATE.start_main_~inlen~0 2147483647)) (.cse18 (< 0 |#StackHeapBarrier|)) (.cse19 (= |#NULL.base| 0))) (or (and (= ULTIMATE.start_main_~buf~0 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 2 ULTIMATE.start_main_~bufferlen~0)) (and .cse0 .cse1 .cse2 .cse3 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse4 (<= 0 .cse5) .cse6 (<= ULTIMATE.start_main_~buflim~0 2147483645) (<= ULTIMATE.start_main_~buf~0 2) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= (+ 2 ULTIMATE.start_main_~buf~0) ULTIMATE.start_main_~bufferlen~0) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) .cse6 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 (< ULTIMATE.start_main_~buf~0 .cse5) .cse17 .cse18 .cse19)))) [2021-10-29 04:57:57,432 INFO L857 garLoopResultBuilder]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2021-10-29 04:57:57,432 INFO L853 garLoopResultBuilder]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0) (<= 0 ULTIMATE.start_main_~buf~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 2 ULTIMATE.start_main_~bufferlen~0)) [2021-10-29 04:57:57,432 INFO L857 garLoopResultBuilder]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2021-10-29 04:57:57,432 INFO L860 garLoopResultBuilder]: At program point L18-23(lines 17 22) the Hoare annotation is: true [2021-10-29 04:57:57,432 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,433 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,433 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,433 INFO L857 garLoopResultBuilder]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,433 INFO L857 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,433 INFO L857 garLoopResultBuilder]: For program point L19-4(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,433 INFO L857 garLoopResultBuilder]: For program point L19-5(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,434 INFO L857 garLoopResultBuilder]: For program point L19-6(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,434 INFO L857 garLoopResultBuilder]: For program point L19-7(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,434 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,434 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:57:57,434 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 37 48) no Hoare annotation was computed. [2021-10-29 04:57:57,434 INFO L857 garLoopResultBuilder]: For program point L37-3(lines 37 48) no Hoare annotation was computed. [2021-10-29 04:57:57,434 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,434 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,434 INFO L860 garLoopResultBuilder]: At program point L55(lines 25 56) the Hoare annotation is: true [2021-10-29 04:57:57,435 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-10-29 04:57:57,435 INFO L857 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-10-29 04:57:57,435 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,435 INFO L857 garLoopResultBuilder]: For program point L31-1(lines 25 56) no Hoare annotation was computed. [2021-10-29 04:57:57,435 INFO L857 garLoopResultBuilder]: For program point L32(lines 25 56) no Hoare annotation was computed. [2021-10-29 04:57:57,435 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,436 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:57:57,436 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,436 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-29 04:57:57,436 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-29 04:57:57,437 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (let ((.cse18 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= (select |#valid| |#t~string1.base|) 1)) (.cse1 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse2 (= (select .cse18 (+ |#t~string0.offset| 1)) 0)) (.cse3 (= 2 (select |#length| |#t~string0.base|))) (.cse4 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0))) (.cse5 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= (select |#valid| |#t~string0.base|) 1)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse10 (= (select |#length| |#t~string1.base|) 9)) (.cse11 (= |ULTIMATE.start___VERIFIER_assert_#in~cond| (ite (<= 0 ULTIMATE.start_main_~buf~0) 1 0))) (.cse12 (= 48 (select .cse18 |#t~string0.offset|))) (.cse13 (= |#t~string1.offset| 0)) (.cse14 (= |#t~string0.offset| 0)) (.cse15 (<= ULTIMATE.start_main_~inlen~0 2147483647)) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (and (<= 1 ULTIMATE.start_main_~in~0) .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 .cse4 (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) .cse5 (<= ULTIMATE.start_main_~bufferlen~0 2147483647) (<= 1 ULTIMATE.start_main_~buf~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17) (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~buf~0 0) .cse4 (<= (+ 3 ULTIMATE.start_main_~buflim~0) ULTIMATE.start_main_~inlen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~in~0 0) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17)))) [2021-10-29 04:57:57,437 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-29 04:57:57,437 INFO L853 garLoopResultBuilder]: At program point L18-5(lines 17 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (<= 0 ULTIMATE.start_main_~buf~0) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= 2 (select |#length| |#t~string0.base|)) (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) (<= 0 ULTIMATE.start_main_~in~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0) (<= ULTIMATE.start_main_~bufferlen~0 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (= |#NULL.offset| 0) (< |#StackHeapBarrier| |#t~string0.base|) (= (select |#length| |#t~string1.base|) 9) (= 48 (select .cse0 |#t~string0.offset|)) (= |#t~string1.offset| 0) (= |#t~string0.offset| 0) (<= ULTIMATE.start_main_~inlen~0 2147483647) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-10-29 04:57:57,437 INFO L857 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-10-29 04:57:57,438 INFO L853 garLoopResultBuilder]: At program point L18-8(lines 17 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string0.base|))) (and (<= 1 ULTIMATE.start_main_~in~0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= (select |#valid| |#t~string1.base|) 1) (< |#StackHeapBarrier| |#t~string1.base|) (= (select .cse0 (+ |#t~string0.offset| 1)) 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= 2 (select |#length| |#t~string0.base|)) (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) (<= ULTIMATE.start_main_~bufferlen~0 2147483647) (<= 1 ULTIMATE.start_main_~buf~0) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string0.base|) 1) (= |#NULL.offset| 0) (< |#StackHeapBarrier| |#t~string0.base|) (= (select |#length| |#t~string1.base|) 9) (= 48 (select .cse0 |#t~string0.offset|)) (= |#t~string1.offset| 0) (= |#t~string0.offset| 0) (< ULTIMATE.start_main_~buf~0 (+ ULTIMATE.start_main_~buflim~0 1)) (<= ULTIMATE.start_main_~inlen~0 2147483647) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-10-29 04:57:57,438 INFO L857 garLoopResultBuilder]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2021-10-29 04:57:57,438 INFO L853 garLoopResultBuilder]: At program point L18-11(lines 17 48) the Hoare annotation is: (let ((.cse5 (+ 2 ULTIMATE.start_main_~buflim~0)) (.cse18 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= (select |#valid| |#t~string1.base|) 1)) (.cse1 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse2 (= (select .cse18 (+ |#t~string0.offset| 1)) 0)) (.cse3 (= 2 (select |#length| |#t~string0.base|))) (.cse4 (= ULTIMATE.start_main_~bufferlen~0 .cse5)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= (select |#valid| |#t~string0.base|) 1)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse10 (= (select |#length| |#t~string1.base|) 9)) (.cse11 (= 48 (select .cse18 |#t~string0.offset|))) (.cse12 (= |#t~string1.offset| 0)) (.cse13 (= |#t~string0.offset| 0)) (.cse14 (< ULTIMATE.start_main_~buf~0 (+ ULTIMATE.start_main_~buflim~0 1))) (.cse15 (<= ULTIMATE.start_main_~inlen~0 2147483647)) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~in~0 0) .cse3 (= ULTIMATE.start_main_~buf~0 0) .cse4 (<= 0 ULTIMATE.start_main_~in~0) (< .cse5 ULTIMATE.start_main_~inlen~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17) (and (<= 1 ULTIMATE.start_main_~in~0) .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) .cse3 .cse4 (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= (+ ULTIMATE.start_main_~in~0 3 ULTIMATE.start_main_~buflim~0) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) (<= ULTIMATE.start_main_~bufferlen~0 2147483647) (<= 1 ULTIMATE.start_main_~buf~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17)))) [2021-10-29 04:57:57,439 INFO L857 garLoopResultBuilder]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2021-10-29 04:57:57,439 INFO L853 garLoopResultBuilder]: At program point L18-14(lines 17 22) the Hoare annotation is: (let ((.cse23 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~in~0)) (.cse1 (= (select |#valid| |#t~string1.base|) 1)) (.cse2 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse3 (= (select .cse23 (+ |#t~string0.offset| 1)) 0)) (.cse4 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1)) (.cse6 (= 2 (select |#length| |#t~string0.base|))) (.cse7 (< ULTIMATE.start_main_~in~0 ULTIMATE.start_main_~inlen~0)) (.cse8 (<= ULTIMATE.start___VERIFIER_assert_~cond 1)) (.cse19 (+ ULTIMATE.start_main_~buflim~0 1)) (.cse9 (<= ULTIMATE.start_main_~bufferlen~0 2147483647)) (.cse10 (<= 1 ULTIMATE.start_main_~buf~0)) (.cse11 (= (select |#valid| 0) 0)) (.cse12 (= (select |#valid| |#t~string0.base|) 1)) (.cse13 (= |#NULL.offset| 0)) (.cse14 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse15 (= (select |#length| |#t~string1.base|) 9)) (.cse16 (= 48 (select .cse23 |#t~string0.offset|))) (.cse17 (= |#t~string1.offset| 0)) (.cse18 (= |#t~string0.offset| 0)) (.cse20 (<= ULTIMATE.start_main_~inlen~0 2147483647)) (.cse21 (< 0 |#StackHeapBarrier|)) (.cse22 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~bufferlen~0 (+ 2 ULTIMATE.start_main_~buflim~0)) .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 (< ULTIMATE.start_main_~buf~0 .cse19) .cse20 .cse21 .cse22) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= 0 .cse19) .cse8 (<= ULTIMATE.start_main_~buflim~0 2147483645) (not (= .cse19 ULTIMATE.start_main_~buf~0)) (<= ULTIMATE.start_main_~buf~0 2) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (<= (+ 2 ULTIMATE.start_main_~buf~0) ULTIMATE.start_main_~bufferlen~0) .cse16 .cse17 .cse18 .cse20 .cse21 .cse22) (and (= ULTIMATE.start_main_~buf~0 0) (= ULTIMATE.start_main_~in~0 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 2 ULTIMATE.start_main_~bufferlen~0))))) [2021-10-29 04:57:57,439 INFO L857 garLoopResultBuilder]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2021-10-29 04:57:57,443 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:57,445 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:57:57,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:57:57 BoogieIcfgContainer [2021-10-29 04:57:57,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:57:57,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:57:57,494 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:57:57,494 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:57:57,495 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:57:27" (3/4) ... [2021-10-29 04:57:57,498 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:57:57,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-29 04:57:57,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 04:57:57,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 04:57:57,512 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:57:57,538 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && in <= 0) && 2 == unknown-#length-unknown["0"]) && buf == 0) && bufferlen == 2 + buflim) && 0 <= in) && 2 + buflim < inlen) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && cond <= 1) && in + 3 + buflim <= buf + inlen) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) [2021-10-29 04:57:57,539 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && in < inlen) && bufferlen == 2 + buflim) && cond <= 1) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && in < inlen) && 0 <= buflim + 1) && cond <= 1) && buflim <= 2147483645) && !(buflim + 1 == buf)) && buf <= 2) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 2 + buf <= bufferlen) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((buf == 0 && in == 0) && !(0 == cond)) && 2 <= bufferlen) [2021-10-29 04:57:57,539 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && cond <= 1) && in + 3 + buflim <= buf + inlen) && buf < buflim) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && \old(cond) == (if 0 <= buf then 1 else 0)) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && buf == 0) && bufferlen == 2 + buflim) && 3 + buflim <= inlen) && 1 == cond) && in == 0) && buf < buflim) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && \old(cond) == (if 0 <= buf then 1 else 0)) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) [2021-10-29 04:57:57,540 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && 0 <= buf) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && 0 <= in) && 1 == cond) && in + 3 + buflim <= buf + inlen) && buf < buflim) && bufferlen <= 2147483647) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 [2021-10-29 04:57:57,540 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((1 <= in && \old(cond) == cond) && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && in + 3 + buflim <= buf + inlen) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 [2021-10-29 04:57:57,556 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:57:57,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:57:57,558 INFO L168 Benchmark]: Toolchain (without parser) took 31056.86 ms. Allocated memory was 90.2 MB in the beginning and 159.4 MB in the end (delta: 69.2 MB). Free memory was 52.8 MB in the beginning and 92.3 MB in the end (delta: -39.5 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:57,558 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 68.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:57:57,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.28 ms. Allocated memory is still 90.2 MB. Free memory was 52.6 MB in the beginning and 66.9 MB in the end (delta: -14.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:57,558 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.50 ms. Allocated memory is still 90.2 MB. Free memory was 66.7 MB in the beginning and 65.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:57:57,559 INFO L168 Benchmark]: Boogie Preprocessor took 25.71 ms. Allocated memory is still 90.2 MB. Free memory was 65.2 MB in the beginning and 64.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:57,559 INFO L168 Benchmark]: RCFGBuilder took 387.96 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 51.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:57,559 INFO L168 Benchmark]: TraceAbstraction took 30254.88 ms. Allocated memory was 90.2 MB in the beginning and 159.4 MB in the end (delta: 69.2 MB). Free memory was 51.4 MB in the beginning and 95.4 MB in the end (delta: -44.0 MB). Peak memory consumption was 82.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:57,560 INFO L168 Benchmark]: Witness Printer took 62.99 ms. Allocated memory is still 159.4 MB. Free memory was 95.4 MB in the beginning and 92.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:57,561 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory is still 68.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.28 ms. Allocated memory is still 90.2 MB. Free memory was 52.6 MB in the beginning and 66.9 MB in the end (delta: -14.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.50 ms. Allocated memory is still 90.2 MB. Free memory was 66.7 MB in the beginning and 65.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.71 ms. Allocated memory is still 90.2 MB. Free memory was 65.2 MB in the beginning and 64.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 387.96 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 51.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 30254.88 ms. Allocated memory was 90.2 MB in the beginning and 159.4 MB in the end (delta: 69.2 MB). Free memory was 51.4 MB in the beginning and 95.4 MB in the end (delta: -44.0 MB). Peak memory consumption was 82.6 MB. Max. memory is 16.1 GB. * Witness Printer took 62.99 ms. Allocated memory is still 159.4 MB. Free memory was 95.4 MB in the beginning and 92.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 30.1s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 300 SDtfs, 998 SDslu, 858 SDs, 0 SdLazy, 1049 SolverSat, 517 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 816 GetRequests, 454 SyntacticMatches, 54 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5608 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=10, InterpolantAutomatonStates: 163, 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, 12 MinimizatonAttempts, 87 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 53 NumberOfFragments, 1030 HoareAnnotationTreeSize, 9 FomulaSimplifications, 20322 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 9 FomulaSimplificationsInter, 2621 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 487 NumberOfCodeBlocks, 461 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 671 ConstructedInterpolants, 0 QuantifiedInterpolants, 4430 SizeOfPredicates, 36 NumberOfNonLiveVariables, 642 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 50/558 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 933, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 15, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 36, TOOLS_POST_TIME[ms]: 504, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 36, TOOLS_QUANTIFIERELIM_TIME[ms]: 484, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 191, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 56, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 182, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 110, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 5, DOMAIN_ISBOTTOM_APPLICATIONS: 15, DOMAIN_ISBOTTOM_TIME[ms]: 40, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 351, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 350, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 22, DAG_COMPRESSION_PROCESSED_NODES: 191, DAG_COMPRESSION_RETAINED_NODES: 49, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && in <= 0) && 2 == unknown-#length-unknown["0"]) && buf == 0) && bufferlen == 2 + buflim) && 0 <= in) && 2 + buflim < inlen) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && cond <= 1) && in + 3 + buflim <= buf + inlen) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && cond <= 1) && in + 3 + buflim <= buf + inlen) && buf < buflim) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && \old(cond) == (if 0 <= buf then 1 else 0)) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && buf == 0) && bufferlen == 2 + buflim) && 3 + buflim <= inlen) && 1 == cond) && in == 0) && buf < buflim) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && \old(cond) == (if 0 <= buf then 1 else 0)) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && 0 <= buf) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && 0 <= in) && 1 == cond) && in + 3 + buflim <= buf + inlen) && buf < buflim) && bufferlen <= 2147483647) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((buf == 0 && !(0 == cond)) && 2 <= bufferlen) || (((((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && 0 <= buf) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && 2 == unknown-#length-unknown["0"]) && 0 <= buflim + 1) && 0 <= in) && buflim <= 2147483645) && buf <= 2) && bufferlen <= 2147483647) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 2 + buf <= bufferlen) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && 0 < inlen) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((\valid["assert.h"] == 1 && unknown-#StackHeapBarrier-unknown < "assert.h") && 0 <= buf) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && 0 <= in) && 1 == cond) && bufferlen <= 2147483647) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && 0 < inlen) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((buf + 1 <= bufferlen && 0 <= buf) && !(0 == cond)) && 2 <= bufferlen - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && in < inlen) && bufferlen == 2 + buflim) && cond <= 1) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((((((((((((1 <= in && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && 1 <= cond) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && in < inlen) && 0 <= buflim + 1) && cond <= 1) && buflim <= 2147483645) && !(buflim + 1 == buf)) && buf <= 2) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 2 + buf <= bufferlen) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((buf == 0 && in == 0) && !(0 == cond)) && 2 <= bufferlen) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((((((((((((((((((1 <= in && \old(cond) == cond) && \valid["assert.h"] == 1) && unknown-#StackHeapBarrier-unknown < "assert.h") && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \old(cond) == 1) && 2 == unknown-#length-unknown["0"]) && bufferlen == 2 + buflim) && in + 3 + buflim <= buf + inlen) && bufferlen <= 2147483647) && 1 <= buf) && \valid[0] == 0) && \valid["0"] == 1) && #NULL == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["assert.h"] == 9) && 48 == unknown-#memory_int-unknown["0"]["0"]) && "assert.h" == 0) && "0" == 0) && buf < buflim + 1) && inlen <= 2147483647) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-29 04:57:57,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5a5794-d4e4-41c0-b2b3-0faea559cf47/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...