./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label37.c --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_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/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_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label37.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/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_c9197ff5-5d36-40e6-9085-46431f5367d3/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 f6a31abd5185b15385b4060783f7e6ebda0d51c801a422158db36fc56fa68a0e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 04:52:43,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:52:43,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:52:43,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:52:43,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:52:43,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:52:43,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:52:43,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:52:43,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:52:43,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:52:43,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:52:43,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:52:43,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:52:43,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:52:43,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:52:43,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:52:43,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:52:43,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:52:43,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:52:43,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:52:43,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:52:43,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:52:43,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:52:43,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:52:43,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:52:43,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:52:43,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:52:43,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:52:43,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:52:43,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:52:43,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:52:43,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:52:43,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:52:43,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:52:43,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:52:43,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:52:43,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:52:43,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:52:43,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:52:43,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:52:43,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:52:43,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:52:43,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:52:43,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:52:43,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:52:43,216 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:52:43,216 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:52:43,216 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:52:43,216 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:52:43,217 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:52:43,223 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:52:43,223 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:52:43,224 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:52:43,224 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:52:43,225 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:52:43,225 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:52:43,225 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:52:43,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:52:43,226 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:52:43,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:52:43,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:52:43,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:52:43,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:52:43,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:52:43,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:52:43,228 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:52:43,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:52:43,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:52:43,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:52:43,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:52:43,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:52:43,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:52:43,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:52:43,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:52:43,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:52:43,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:52:43,232 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:52:43,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:52:43,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:52:43,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:52:43,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:52:43,233 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_c9197ff5-5d36-40e6-9085-46431f5367d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6a31abd5185b15385b4060783f7e6ebda0d51c801a422158db36fc56fa68a0e [2021-10-29 04:52:43,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:52:43,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:52:43,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:52:43,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:52:43,515 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:52:43,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/eca-rers2012/Problem02_label37.c [2021-10-29 04:52:43,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/data/1991a35d8/a1ec4ccc71864c199744fdae002fa8a7/FLAG4e7d286a8 [2021-10-29 04:52:44,272 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:52:44,277 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/sv-benchmarks/c/eca-rers2012/Problem02_label37.c [2021-10-29 04:52:44,299 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/data/1991a35d8/a1ec4ccc71864c199744fdae002fa8a7/FLAG4e7d286a8 [2021-10-29 04:52:44,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/data/1991a35d8/a1ec4ccc71864c199744fdae002fa8a7 [2021-10-29 04:52:44,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:52:44,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:52:44,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:52:44,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:52:44,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:52:44,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:52:44" (1/1) ... [2021-10-29 04:52:44,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24420b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:44, skipping insertion in model container [2021-10-29 04:52:44,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:52:44" (1/1) ... [2021-10-29 04:52:44,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:52:44,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:52:44,899 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_c9197ff5-5d36-40e6-9085-46431f5367d3/sv-benchmarks/c/eca-rers2012/Problem02_label37.c[19058,19071] [2021-10-29 04:52:44,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:52:44,952 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:52:45,108 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_c9197ff5-5d36-40e6-9085-46431f5367d3/sv-benchmarks/c/eca-rers2012/Problem02_label37.c[19058,19071] [2021-10-29 04:52:45,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:52:45,136 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:52:45,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:45 WrapperNode [2021-10-29 04:52:45,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:52:45,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:52:45,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:52:45,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:52:45,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:45" (1/1) ... [2021-10-29 04:52:45,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:45" (1/1) ... [2021-10-29 04:52:45,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:52:45,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:52:45,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:52:45,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:52:45,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:45" (1/1) ... [2021-10-29 04:52:45,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:45" (1/1) ... [2021-10-29 04:52:45,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:45" (1/1) ... [2021-10-29 04:52:45,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:45" (1/1) ... [2021-10-29 04:52:45,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:45" (1/1) ... [2021-10-29 04:52:45,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:45" (1/1) ... [2021-10-29 04:52:45,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:45" (1/1) ... [2021-10-29 04:52:45,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:52:45,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:52:45,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:52:45,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:52:45,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:45" (1/1) ... [2021-10-29 04:52:45,372 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:52:45,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:52:45,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:52:45,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:52:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:52:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:52:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:52:45,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:52:47,373 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:52:47,373 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 04:52:47,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:52:47 BoogieIcfgContainer [2021-10-29 04:52:47,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:52:47,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:52:47,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:52:47,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:52:47,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:52:44" (1/3) ... [2021-10-29 04:52:47,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3feb3c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:52:47, skipping insertion in model container [2021-10-29 04:52:47,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:52:45" (2/3) ... [2021-10-29 04:52:47,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3feb3c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:52:47, skipping insertion in model container [2021-10-29 04:52:47,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:52:47" (3/3) ... [2021-10-29 04:52:47,388 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label37.c [2021-10-29 04:52:47,397 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:52:47,397 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:52:47,461 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:52:47,467 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 04:52:47,467 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:52:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 04:52:47,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-29 04:52:47,492 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:52:47,492 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:47,493 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:52:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:52:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1814581527, now seen corresponding path program 1 times [2021-10-29 04:52:47,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:52:47,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389341975] [2021-10-29 04:52:47,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:52:47,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:52:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:52:47,854 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 04:52:47,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:52:47,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389341975] [2021-10-29 04:52:47,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389341975] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:52:47,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:52:47,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:52:47,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783254536] [2021-10-29 04:52:47,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:52:47,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:52:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:52:47,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:52:47,886 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 04:52:48,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:52:48,380 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-29 04:52:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:52:48,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2021-10-29 04:52:48,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:52:48,403 INFO L225 Difference]: With dead ends: 251 [2021-10-29 04:52:48,404 INFO L226 Difference]: Without dead ends: 163 [2021-10-29 04:52:48,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:52:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-29 04:52:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-29 04:52:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.8395061728395061) internal successors, (298), 162 states have internal predecessors, (298), 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 04:52:48,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-29 04:52:48,479 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-29 04:52:48,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:52:48,480 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-29 04:52:48,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 04:52:48,480 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-29 04:52:48,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-29 04:52:48,484 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:52:48,485 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:48,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:52:48,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:52:48,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:52:48,486 INFO L85 PathProgramCache]: Analyzing trace with hash 625154188, now seen corresponding path program 1 times [2021-10-29 04:52:48,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:52:48,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072925863] [2021-10-29 04:52:48,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:52:48,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:52:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:52:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:52:48,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:52:48,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072925863] [2021-10-29 04:52:48,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072925863] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:52:48,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:52:48,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:52:48,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412160476] [2021-10-29 04:52:48,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:52:48,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:52:48,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:52:48,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:52:48,563 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 04:52:48,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:52:48,997 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-29 04:52:48,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:52:48,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 84 [2021-10-29 04:52:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:52:49,000 INFO L225 Difference]: With dead ends: 485 [2021-10-29 04:52:49,001 INFO L226 Difference]: Without dead ends: 323 [2021-10-29 04:52:49,003 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:52:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-29 04:52:49,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-29 04:52:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.515527950310559) internal successors, (488), 322 states have internal predecessors, (488), 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 04:52:49,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2021-10-29 04:52:49,023 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2021-10-29 04:52:49,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:52:49,023 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2021-10-29 04:52:49,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 04:52:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2021-10-29 04:52:49,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-29 04:52:49,028 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:52:49,028 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:49,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:52:49,029 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:52:49,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:52:49,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1659808977, now seen corresponding path program 1 times [2021-10-29 04:52:49,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:52:49,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741430901] [2021-10-29 04:52:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:52:49,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:52:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:52:49,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:52:49,097 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:52:49,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741430901] [2021-10-29 04:52:49,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741430901] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:52:49,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:52:49,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:52:49,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219206817] [2021-10-29 04:52:49,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:52:49,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:52:49,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:52:49,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:52:49,101 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 04:52:49,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:52:49,513 INFO L93 Difference]: Finished difference Result 805 states and 1271 transitions. [2021-10-29 04:52:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:52:49,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-10-29 04:52:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:52:49,517 INFO L225 Difference]: With dead ends: 805 [2021-10-29 04:52:49,517 INFO L226 Difference]: Without dead ends: 483 [2021-10-29 04:52:49,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:52:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-29 04:52:49,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-29 04:52:49,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4066390041493777) internal successors, (678), 482 states have internal predecessors, (678), 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 04:52:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 678 transitions. [2021-10-29 04:52:49,545 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 678 transitions. Word has length 89 [2021-10-29 04:52:49,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:52:49,546 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 678 transitions. [2021-10-29 04:52:49,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 04:52:49,546 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 678 transitions. [2021-10-29 04:52:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-29 04:52:49,552 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:52:49,552 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:49,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 04:52:49,553 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:52:49,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:52:49,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1787473148, now seen corresponding path program 1 times [2021-10-29 04:52:49,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:52:49,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883941317] [2021-10-29 04:52:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:52:49,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:52:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:52:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-29 04:52:49,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:52:49,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883941317] [2021-10-29 04:52:49,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883941317] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:52:49,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:52:49,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:52:49,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875262893] [2021-10-29 04:52:49,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:52:49,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:52:49,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:52:49,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:52:49,670 INFO L87 Difference]: Start difference. First operand 483 states and 678 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 04:52:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:52:50,089 INFO L93 Difference]: Finished difference Result 1205 states and 1746 transitions. [2021-10-29 04:52:50,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:52:50,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 89 [2021-10-29 04:52:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:52:50,096 INFO L225 Difference]: With dead ends: 1205 [2021-10-29 04:52:50,096 INFO L226 Difference]: Without dead ends: 723 [2021-10-29 04:52:50,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:52:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-29 04:52:50,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-29 04:52:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.389196675900277) internal successors, (1003), 722 states have internal predecessors, (1003), 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 04:52:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1003 transitions. [2021-10-29 04:52:50,158 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1003 transitions. Word has length 89 [2021-10-29 04:52:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:52:50,162 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1003 transitions. [2021-10-29 04:52:50,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 04:52:50,164 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1003 transitions. [2021-10-29 04:52:50,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-29 04:52:50,169 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:52:50,170 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:50,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 04:52:50,171 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:52:50,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:52:50,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1872806706, now seen corresponding path program 1 times [2021-10-29 04:52:50,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:52:50,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894505667] [2021-10-29 04:52:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:52:50,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:52:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:52:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:52:50,302 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:52:50,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894505667] [2021-10-29 04:52:50,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894505667] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:52:50,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:52:50,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:52:50,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297891000] [2021-10-29 04:52:50,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:52:50,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:52:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:52:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:52:50,306 INFO L87 Difference]: Start difference. First operand 723 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 04:52:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:52:50,611 INFO L93 Difference]: Finished difference Result 1365 states and 1915 transitions. [2021-10-29 04:52:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:52:50,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2021-10-29 04:52:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:52:50,616 INFO L225 Difference]: With dead ends: 1365 [2021-10-29 04:52:50,616 INFO L226 Difference]: Without dead ends: 643 [2021-10-29 04:52:50,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:52:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-29 04:52:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-29 04:52:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.3442367601246106) internal successors, (863), 642 states have internal predecessors, (863), 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 04:52:50,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 863 transitions. [2021-10-29 04:52:50,639 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 863 transitions. Word has length 113 [2021-10-29 04:52:50,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:52:50,640 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 863 transitions. [2021-10-29 04:52:50,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 04:52:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 863 transitions. [2021-10-29 04:52:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-29 04:52:50,643 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:52:50,644 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:50,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 04:52:50,644 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:52:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:52:50,645 INFO L85 PathProgramCache]: Analyzing trace with hash 937196870, now seen corresponding path program 1 times [2021-10-29 04:52:50,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:52:50,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237422572] [2021-10-29 04:52:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:52:50,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:52:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:52:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:52:50,782 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:52:50,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237422572] [2021-10-29 04:52:50,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237422572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:52:50,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406158695] [2021-10-29 04:52:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:52:50,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:52:50,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:52:50,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:52:50,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:52:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:52:50,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:52:50,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:52:51,489 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-29 04:52:51,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:52:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-29 04:52:51,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406158695] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:52:51,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 04:52:51,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 5 [2021-10-29 04:52:51,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073447050] [2021-10-29 04:52:51,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:52:51,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:52:51,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:52:51,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:52:51,907 INFO L87 Difference]: Start difference. First operand 643 states and 863 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 04:52:52,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:52:52,248 INFO L93 Difference]: Finished difference Result 1205 states and 1635 transitions. [2021-10-29 04:52:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:52:52,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 121 [2021-10-29 04:52:52,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:52:52,255 INFO L225 Difference]: With dead ends: 1205 [2021-10-29 04:52:52,256 INFO L226 Difference]: Without dead ends: 1203 [2021-10-29 04:52:52,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:52:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-10-29 04:52:52,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 723. [2021-10-29 04:52:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.3753462603878117) internal successors, (993), 722 states have internal predecessors, (993), 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 04:52:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 993 transitions. [2021-10-29 04:52:52,289 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 993 transitions. Word has length 121 [2021-10-29 04:52:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:52:52,290 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 993 transitions. [2021-10-29 04:52:52,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 04:52:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 993 transitions. [2021-10-29 04:52:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-29 04:52:52,293 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:52:52,294 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:52,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:52:52,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:52:52,507 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:52:52,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:52:52,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1486176485, now seen corresponding path program 1 times [2021-10-29 04:52:52,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:52:52,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558796911] [2021-10-29 04:52:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:52:52,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:52:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:52:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-29 04:52:52,574 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:52:52,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558796911] [2021-10-29 04:52:52,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558796911] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:52:52,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:52:52,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:52:52,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051001002] [2021-10-29 04:52:52,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:52:52,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:52:52,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:52:52,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:52:52,577 INFO L87 Difference]: Start difference. First operand 723 states and 993 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 04:52:52,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:52:52,889 INFO L93 Difference]: Finished difference Result 1683 states and 2279 transitions. [2021-10-29 04:52:52,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:52:52,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 135 [2021-10-29 04:52:52,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:52:52,891 INFO L225 Difference]: With dead ends: 1683 [2021-10-29 04:52:52,891 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:52:52,893 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:52:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:52:52,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:52:52,893 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 04:52:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:52:52,894 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 135 [2021-10-29 04:52:52,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:52:52,894 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:52:52,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 04:52:52,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:52:52,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:52:52,897 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:52:52,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 04:52:52,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:52:52,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:52:52,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:52:52,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:52:52,987 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-29 04:52:52,989 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-29 04:52:52,989 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-29 04:52:52,989 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-29 04:52:52,989 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-29 04:52:52,990 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-29 04:52:52,990 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-29 04:52:52,990 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-29 04:52:52,990 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-29 04:52:52,990 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-29 04:52:52,991 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-29 04:52:52,991 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-29 04:52:52,991 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-29 04:52:52,991 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-29 04:52:52,991 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-29 04:52:52,991 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-29 04:52:52,992 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-29 04:52:52,992 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-29 04:52:52,992 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-29 04:52:52,992 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-29 04:52:52,993 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-29 04:52:52,993 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-29 04:52:52,993 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-29 04:52:52,994 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-29 04:52:52,994 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-29 04:52:52,994 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-29 04:52:52,994 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:52:52,994 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-29 04:52:52,994 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-29 04:52:52,995 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-29 04:52:52,995 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-29 04:52:52,995 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-29 04:52:52,995 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-29 04:52:52,995 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-29 04:52:52,995 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-29 04:52:52,996 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-29 04:52:52,996 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 542) no Hoare annotation was computed. [2021-10-29 04:52:52,996 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-29 04:52:52,998 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-29 04:52:52,998 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-29 04:52:52,999 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-29 04:52:52,999 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-29 04:52:52,999 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-29 04:52:52,999 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-29 04:52:52,999 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-29 04:52:52,999 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-29 04:52:53,000 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-29 04:52:53,002 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-29 04:52:53,003 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-29 04:52:53,004 INFO L857 garLoopResultBuilder]: For program point L538-1(lines 39 608) no Hoare annotation was computed. [2021-10-29 04:52:53,004 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-29 04:52:53,004 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-29 04:52:53,004 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-29 04:52:53,007 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-29 04:52:53,007 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a25~0 1))) (or (and .cse0 (= ~a19~0 1)) (and .cse0 (<= ~a28~0 10)) (= ~a25~0 0))) [2021-10-29 04:52:53,007 INFO L857 garLoopResultBuilder]: For program point L541-1(lines 39 608) no Hoare annotation was computed. [2021-10-29 04:52:53,007 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-29 04:52:53,010 INFO L857 garLoopResultBuilder]: For program point L542(line 542) no Hoare annotation was computed. [2021-10-29 04:52:53,012 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-29 04:52:53,013 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-29 04:52:53,013 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-29 04:52:53,013 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-29 04:52:53,013 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-29 04:52:53,013 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-29 04:52:53,014 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-29 04:52:53,014 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:52:53,014 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-29 04:52:53,014 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-29 04:52:53,015 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a25~0 1))) (or (and .cse0 (= ~a19~0 1)) (and .cse0 (<= ~a28~0 10)) (= ~a25~0 0))) [2021-10-29 04:52:53,016 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-29 04:52:53,016 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-29 04:52:53,017 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-29 04:52:53,017 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-29 04:52:53,017 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-29 04:52:53,017 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-29 04:52:53,017 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-29 04:52:53,017 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-29 04:52:53,017 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-29 04:52:53,018 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-29 04:52:53,018 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-29 04:52:53,018 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-29 04:52:53,018 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-29 04:52:53,018 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-29 04:52:53,018 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-29 04:52:53,019 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-29 04:52:53,021 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:52:53,023 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:52:53,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:52:53 BoogieIcfgContainer [2021-10-29 04:52:53,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:52:53,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:52:53,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:52:53,041 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:52:53,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:52:47" (3/4) ... [2021-10-29 04:52:53,044 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:52:53,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-29 04:52:53,080 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-29 04:52:53,082 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-29 04:52:53,084 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:52:53,231 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:52:53,231 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:52:53,233 INFO L168 Benchmark]: Toolchain (without parser) took 8772.00 ms. Allocated memory was 92.3 MB in the beginning and 178.3 MB in the end (delta: 86.0 MB). Free memory was 59.1 MB in the beginning and 77.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 67.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:52:53,234 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 46.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:52:53,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.68 ms. Allocated memory is still 92.3 MB. Free memory was 58.9 MB in the beginning and 53.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:52:53,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.01 ms. Allocated memory is still 92.3 MB. Free memory was 53.1 MB in the beginning and 47.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:52:53,235 INFO L168 Benchmark]: Boogie Preprocessor took 117.37 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 47.6 MB in the beginning and 85.2 MB in the end (delta: -37.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:52:53,236 INFO L168 Benchmark]: RCFGBuilder took 2021.31 ms. Allocated memory is still 111.1 MB. Free memory was 85.2 MB in the beginning and 67.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 53.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:52:53,236 INFO L168 Benchmark]: TraceAbstraction took 5660.44 ms. Allocated memory was 111.1 MB in the beginning and 178.3 MB in the end (delta: 67.1 MB). Free memory was 67.3 MB in the beginning and 91.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:52:53,237 INFO L168 Benchmark]: Witness Printer took 191.23 ms. Allocated memory is still 178.3 MB. Free memory was 91.6 MB in the beginning and 77.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:52:53,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 46.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 674.68 ms. Allocated memory is still 92.3 MB. Free memory was 58.9 MB in the beginning and 53.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.01 ms. Allocated memory is still 92.3 MB. Free memory was 53.1 MB in the beginning and 47.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 117.37 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 47.6 MB in the beginning and 85.2 MB in the end (delta: -37.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2021.31 ms. Allocated memory is still 111.1 MB. Free memory was 85.2 MB in the beginning and 67.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 53.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5660.44 ms. Allocated memory was 111.1 MB in the beginning and 178.3 MB in the end (delta: 67.1 MB). Free memory was 67.3 MB in the beginning and 91.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. * Witness Printer took 191.23 ms. Allocated memory is still 178.3 MB. Free memory was 91.6 MB in the beginning and 77.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 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: 542]: 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, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 482 SDtfs, 410 SDslu, 48 SDs, 0 SdLazy, 1629 SolverSat, 476 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 259 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 480 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 29 NumberOfFragments, 37 HoareAnnotationTreeSize, 3 FomulaSimplifications, 472 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 30 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 832 NumberOfCodeBlocks, 832 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 944 ConstructedInterpolants, 0 QuantifiedInterpolants, 2340 SizeOfPredicates, 0 NumberOfNonLiveVariables, 297 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 284/292 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((a25 == 1 && a19 == 1) || (a25 == 1 && a28 <= 10)) || a25 == 0 - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((a25 == 1 && a19 == 1) || (a25 == 1 && a28 <= 10)) || a25 == 0 RESULT: Ultimate proved your program to be correct! [2021-10-29 04:52:53,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9197ff5-5d36-40e6-9085-46431f5367d3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...