./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label06.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_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/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_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/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_630e993e-78f8-40c4-ba28-762db387e043/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 7bcb93b552ce7a7abd40e75144bf36530dd0bd3debdf81ac1c4bfcf0afb0025b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 04:39:51,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:39:51,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:39:51,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:39:51,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:39:51,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:39:51,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:39:51,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:39:51,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:39:51,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:39:51,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:39:51,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:39:51,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:39:51,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:39:51,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:39:51,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:39:51,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:39:51,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:39:51,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:39:51,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:39:51,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:39:51,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:39:51,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:39:51,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:39:51,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:39:51,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:39:51,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:39:51,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:39:51,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:39:51,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:39:51,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:39:51,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:39:51,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:39:51,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:39:51,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:39:51,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:39:51,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:39:51,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:39:51,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:39:51,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:39:51,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:39:51,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:39:51,295 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:39:51,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:39:51,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:39:51,298 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:39:51,298 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:39:51,298 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:39:51,298 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:39:51,299 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:39:51,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:39:51,308 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:39:51,309 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:39:51,309 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:39:51,310 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:39:51,310 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:39:51,310 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:39:51,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:39:51,311 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:39:51,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:39:51,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:39:51,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:39:51,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:39:51,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:39:51,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:39:51,313 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:39:51,313 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:39:51,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:39:51,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:39:51,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:39:51,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:39:51,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:39:51,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:39:51,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:39:51,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:39:51,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:39:51,317 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:39:51,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:39:51,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:39:51,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:39:51,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:39:51,318 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_630e993e-78f8-40c4-ba28-762db387e043/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bcb93b552ce7a7abd40e75144bf36530dd0bd3debdf81ac1c4bfcf0afb0025b [2021-10-29 04:39:51,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:39:51,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:39:51,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:39:51,614 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:39:51,615 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:39:51,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/eca-rers2012/Problem01_label06.c [2021-10-29 04:39:51,690 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/data/79627e8de/c27904bdf13c43dc920ac1b387a53543/FLAG2510f034e [2021-10-29 04:39:52,289 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:39:52,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/sv-benchmarks/c/eca-rers2012/Problem01_label06.c [2021-10-29 04:39:52,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/data/79627e8de/c27904bdf13c43dc920ac1b387a53543/FLAG2510f034e [2021-10-29 04:39:52,526 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/data/79627e8de/c27904bdf13c43dc920ac1b387a53543 [2021-10-29 04:39:52,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:39:52,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:39:52,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:39:52,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:39:52,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:39:52,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:39:52" (1/1) ... [2021-10-29 04:39:52,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579dbb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:52, skipping insertion in model container [2021-10-29 04:39:52,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:39:52" (1/1) ... [2021-10-29 04:39:52,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:39:52,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:39:52,949 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_630e993e-78f8-40c4-ba28-762db387e043/sv-benchmarks/c/eca-rers2012/Problem01_label06.c[20964,20977] [2021-10-29 04:39:52,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:39:52,999 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:39:53,150 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_630e993e-78f8-40c4-ba28-762db387e043/sv-benchmarks/c/eca-rers2012/Problem01_label06.c[20964,20977] [2021-10-29 04:39:53,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:39:53,172 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:39:53,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:53 WrapperNode [2021-10-29 04:39:53,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:39:53,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:39:53,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:39:53,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:39:53,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:53" (1/1) ... [2021-10-29 04:39:53,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:53" (1/1) ... [2021-10-29 04:39:53,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:39:53,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:39:53,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:39:53,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:39:53,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:53" (1/1) ... [2021-10-29 04:39:53,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:53" (1/1) ... [2021-10-29 04:39:53,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:53" (1/1) ... [2021-10-29 04:39:53,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:53" (1/1) ... [2021-10-29 04:39:53,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:53" (1/1) ... [2021-10-29 04:39:53,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:53" (1/1) ... [2021-10-29 04:39:53,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:53" (1/1) ... [2021-10-29 04:39:53,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:39:53,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:39:53,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:39:53,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:39:53,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:53" (1/1) ... [2021-10-29 04:39:53,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:39:53,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:39:53,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:39:53,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:39:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:39:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:39:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:39:53,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:39:55,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:39:55,406 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 04:39:55,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:39:55 BoogieIcfgContainer [2021-10-29 04:39:55,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:39:55,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:39:55,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:39:55,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:39:55,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:39:52" (1/3) ... [2021-10-29 04:39:55,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f50b77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:39:55, skipping insertion in model container [2021-10-29 04:39:55,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:39:53" (2/3) ... [2021-10-29 04:39:55,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f50b77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:39:55, skipping insertion in model container [2021-10-29 04:39:55,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:39:55" (3/3) ... [2021-10-29 04:39:55,419 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2021-10-29 04:39:55,428 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:39:55,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:39:55,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:39:55,495 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 04:39:55,495 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:39:55,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 04:39:55,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-29 04:39:55,520 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:39:55,521 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] [2021-10-29 04:39:55,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:39:55,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:39:55,527 INFO L85 PathProgramCache]: Analyzing trace with hash -104647224, now seen corresponding path program 1 times [2021-10-29 04:39:55,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:39:55,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338720485] [2021-10-29 04:39:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:39:55,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:39:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:39:56,001 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 04:39:56,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:39:56,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338720485] [2021-10-29 04:39:56,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338720485] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:39:56,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:39:56,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:39:56,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577794917] [2021-10-29 04:39:56,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:39:56,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:39:56,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:39:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:39:56,035 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 04:39:56,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:39:56,517 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-29 04:39:56,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:39:56,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2021-10-29 04:39:56,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:39:56,538 INFO L225 Difference]: With dead ends: 224 [2021-10-29 04:39:56,538 INFO L226 Difference]: Without dead ends: 145 [2021-10-29 04:39:56,543 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 04:39:56,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-29 04:39:56,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-29 04:39:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 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 04:39:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-29 04:39:56,595 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-29 04:39:56,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:39:56,596 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-29 04:39:56,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 04:39:56,596 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-29 04:39:56,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-29 04:39:56,600 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:39:56,600 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-29 04:39:56,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:39:56,601 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:39:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:39:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash -601800805, now seen corresponding path program 1 times [2021-10-29 04:39:56,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:39:56,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604820353] [2021-10-29 04:39:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:39:56,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:39:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:39:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:39:56,651 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:39:56,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604820353] [2021-10-29 04:39:56,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604820353] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:39:56,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:39:56,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:39:56,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121294467] [2021-10-29 04:39:56,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:39:56,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:39:56,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:39:56,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:39:56,655 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:39:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:39:56,999 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-29 04:39:56,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:39:57,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-10-29 04:39:57,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:39:57,003 INFO L225 Difference]: With dead ends: 431 [2021-10-29 04:39:57,003 INFO L226 Difference]: Without dead ends: 287 [2021-10-29 04:39:57,004 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 04:39:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-29 04:39:57,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-29 04:39:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 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 04:39:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2021-10-29 04:39:57,025 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2021-10-29 04:39:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:39:57,026 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2021-10-29 04:39:57,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:39:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2021-10-29 04:39:57,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-29 04:39:57,032 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:39:57,032 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:57,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:39:57,033 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:39:57,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:39:57,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1874602250, now seen corresponding path program 1 times [2021-10-29 04:39:57,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:39:57,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925820911] [2021-10-29 04:39:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:39:57,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:39:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:39:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-29 04:39:57,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:39:57,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925820911] [2021-10-29 04:39:57,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925820911] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:39:57,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:39:57,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:39:57,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680237081] [2021-10-29 04:39:57,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:39:57,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:39:57,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:39:57,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:39:57,112 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 04:39:57,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:39:57,445 INFO L93 Difference]: Finished difference Result 715 states and 1184 transitions. [2021-10-29 04:39:57,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:39:57,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 105 [2021-10-29 04:39:57,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:39:57,451 INFO L225 Difference]: With dead ends: 715 [2021-10-29 04:39:57,451 INFO L226 Difference]: Without dead ends: 429 [2021-10-29 04:39:57,453 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 04:39:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-29 04:39:57,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2021-10-29 04:39:57,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6442577030812324) internal successors, (587), 357 states have internal predecessors, (587), 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 04:39:57,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 587 transitions. [2021-10-29 04:39:57,484 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 587 transitions. Word has length 105 [2021-10-29 04:39:57,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:39:57,485 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 587 transitions. [2021-10-29 04:39:57,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 04:39:57,485 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 587 transitions. [2021-10-29 04:39:57,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-29 04:39:57,495 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:39:57,495 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-29 04:39:57,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 04:39:57,496 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:39:57,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:39:57,496 INFO L85 PathProgramCache]: Analyzing trace with hash -300543680, now seen corresponding path program 1 times [2021-10-29 04:39:57,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:39:57,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905465176] [2021-10-29 04:39:57,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:39:57,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:39:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:39:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-29 04:39:57,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:39:57,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905465176] [2021-10-29 04:39:57,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905465176] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:39:57,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:39:57,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:39:57,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553331332] [2021-10-29 04:39:57,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:39:57,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:39:57,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:39:57,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:39:57,608 INFO L87 Difference]: Start difference. First operand 358 states and 587 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 04:39:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:39:57,909 INFO L93 Difference]: Finished difference Result 715 states and 1173 transitions. [2021-10-29 04:39:57,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:39:57,910 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 109 [2021-10-29 04:39:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:39:57,912 INFO L225 Difference]: With dead ends: 715 [2021-10-29 04:39:57,912 INFO L226 Difference]: Without dead ends: 358 [2021-10-29 04:39:57,914 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 04:39:57,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-29 04:39:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-29 04:39:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 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 04:39:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2021-10-29 04:39:57,928 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 109 [2021-10-29 04:39:57,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:39:57,928 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2021-10-29 04:39:57,929 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 04:39:57,929 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2021-10-29 04:39:57,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-29 04:39:57,933 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:39:57,933 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2021-10-29 04:39:57,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 04:39:57,934 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:39:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:39:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash -609028872, now seen corresponding path program 1 times [2021-10-29 04:39:57,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:39:57,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086025583] [2021-10-29 04:39:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:39:57,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:39:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:39:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-29 04:39:58,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:39:58,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086025583] [2021-10-29 04:39:58,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086025583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:39:58,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83834434] [2021-10-29 04:39:58,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:39:58,023 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:39:58,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:39:58,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:39:58,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:39:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:39:58,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:39:58,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:39:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-29 04:39:58,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:39:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-29 04:39:59,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83834434] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:39:59,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 04:39:59,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-29 04:39:59,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898542775] [2021-10-29 04:39:59,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:39:59,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:39:59,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:39:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:39:59,055 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 04:39:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:39:59,352 INFO L93 Difference]: Finished difference Result 715 states and 1161 transitions. [2021-10-29 04:39:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:39:59,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 04:39:59,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:39:59,355 INFO L225 Difference]: With dead ends: 715 [2021-10-29 04:39:59,355 INFO L226 Difference]: Without dead ends: 358 [2021-10-29 04:39:59,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:39:59,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-29 04:39:59,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 287. [2021-10-29 04:39:59,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.486013986013986) internal successors, (425), 286 states have internal predecessors, (425), 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 04:39:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 425 transitions. [2021-10-29 04:39:59,365 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 425 transitions. Word has length 113 [2021-10-29 04:39:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:39:59,365 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 425 transitions. [2021-10-29 04:39:59,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 04:39:59,366 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 425 transitions. [2021-10-29 04:39:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-29 04:39:59,368 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:39:59,368 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 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, 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] [2021-10-29 04:39:59,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:39:59,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:39:59,597 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:39:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:39:59,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2139621542, now seen corresponding path program 1 times [2021-10-29 04:39:59,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:39:59,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569812590] [2021-10-29 04:39:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:39:59,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:39:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:39:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-29 04:39:59,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:39:59,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569812590] [2021-10-29 04:39:59,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569812590] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:39:59,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319533017] [2021-10-29 04:39:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:39:59,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:39:59,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:39:59,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:39:59,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 04:39:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:39:59,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:39:59,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:40:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-29 04:40:00,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:40:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-29 04:40:00,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319533017] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:40:00,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 04:40:00,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-29 04:40:00,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437558054] [2021-10-29 04:40:00,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:40:00,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:40:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:40:00,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:40:00,489 INFO L87 Difference]: Start difference. First operand 287 states and 425 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 04:40:00,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:40:00,772 INFO L93 Difference]: Finished difference Result 431 states and 635 transitions. [2021-10-29 04:40:00,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:40:00,773 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 125 [2021-10-29 04:40:00,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:40:00,776 INFO L225 Difference]: With dead ends: 431 [2021-10-29 04:40:00,776 INFO L226 Difference]: Without dead ends: 429 [2021-10-29 04:40:00,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:40:00,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-29 04:40:00,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 287. [2021-10-29 04:40:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.486013986013986) internal successors, (425), 286 states have internal predecessors, (425), 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 04:40:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 425 transitions. [2021-10-29 04:40:00,786 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 425 transitions. Word has length 125 [2021-10-29 04:40:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:40:00,788 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 425 transitions. [2021-10-29 04:40:00,788 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 04:40:00,788 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 425 transitions. [2021-10-29 04:40:00,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-29 04:40:00,790 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:40:00,790 INFO L513 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 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] [2021-10-29 04:40:00,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:40:01,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-29 04:40:01,004 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:40:01,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:40:01,005 INFO L85 PathProgramCache]: Analyzing trace with hash -709122597, now seen corresponding path program 1 times [2021-10-29 04:40:01,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:40:01,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528362545] [2021-10-29 04:40:01,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:40:01,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:40:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:40:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 04:40:01,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:40:01,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528362545] [2021-10-29 04:40:01,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528362545] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:40:01,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:40:01,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:40:01,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957735628] [2021-10-29 04:40:01,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:40:01,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:40:01,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:40:01,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:40:01,095 INFO L87 Difference]: Start difference. First operand 287 states and 425 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 04:40:01,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:40:01,391 INFO L93 Difference]: Finished difference Result 786 states and 1152 transitions. [2021-10-29 04:40:01,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:40:01,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 129 [2021-10-29 04:40:01,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:40:01,396 INFO L225 Difference]: With dead ends: 786 [2021-10-29 04:40:01,396 INFO L226 Difference]: Without dead ends: 500 [2021-10-29 04:40:01,397 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 04:40:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-29 04:40:01,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2021-10-29 04:40:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.4228971962616823) internal successors, (609), 428 states have internal predecessors, (609), 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 04:40:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 609 transitions. [2021-10-29 04:40:01,411 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 609 transitions. Word has length 129 [2021-10-29 04:40:01,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:40:01,411 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 609 transitions. [2021-10-29 04:40:01,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 04:40:01,412 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 609 transitions. [2021-10-29 04:40:01,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-29 04:40:01,415 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:40:01,415 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 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, 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] [2021-10-29 04:40:01,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 04:40:01,415 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:40:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:40:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1787509431, now seen corresponding path program 1 times [2021-10-29 04:40:01,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:40:01,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099183334] [2021-10-29 04:40:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:40:01,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:40:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:40:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-29 04:40:01,472 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:40:01,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099183334] [2021-10-29 04:40:01,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099183334] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:40:01,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:40:01,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:40:01,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588913183] [2021-10-29 04:40:01,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:40:01,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:40:01,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:40:01,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:40:01,475 INFO L87 Difference]: Start difference. First operand 429 states and 609 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 04:40:01,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:40:01,824 INFO L93 Difference]: Finished difference Result 1212 states and 1704 transitions. [2021-10-29 04:40:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:40:01,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 138 [2021-10-29 04:40:01,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:40:01,830 INFO L225 Difference]: With dead ends: 1212 [2021-10-29 04:40:01,830 INFO L226 Difference]: Without dead ends: 784 [2021-10-29 04:40:01,831 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 04:40:01,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-10-29 04:40:01,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 571. [2021-10-29 04:40:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.4228070175438596) internal successors, (811), 570 states have internal predecessors, (811), 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 04:40:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 811 transitions. [2021-10-29 04:40:01,856 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 811 transitions. Word has length 138 [2021-10-29 04:40:01,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:40:01,857 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 811 transitions. [2021-10-29 04:40:01,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 04:40:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 811 transitions. [2021-10-29 04:40:01,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-10-29 04:40:01,862 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:40:01,863 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 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] [2021-10-29 04:40:01,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 04:40:01,863 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:40:01,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:40:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash -366899958, now seen corresponding path program 1 times [2021-10-29 04:40:01,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:40:01,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838142497] [2021-10-29 04:40:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:40:01,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:40:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:40:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-29 04:40:01,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:40:01,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838142497] [2021-10-29 04:40:01,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838142497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:40:01,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166481522] [2021-10-29 04:40:01,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:40:01,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:40:01,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:40:01,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:40:01,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 04:40:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:40:02,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:40:02,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:40:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-29 04:40:02,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:40:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-29 04:40:03,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166481522] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:40:03,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 04:40:03,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-29 04:40:03,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469008220] [2021-10-29 04:40:03,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:40:03,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:40:03,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:40:03,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:40:03,003 INFO L87 Difference]: Start difference. First operand 571 states and 811 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 04:40:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:40:03,316 INFO L93 Difference]: Finished difference Result 1070 states and 1526 transitions. [2021-10-29 04:40:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:40:03,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 145 [2021-10-29 04:40:03,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:40:03,323 INFO L225 Difference]: With dead ends: 1070 [2021-10-29 04:40:03,323 INFO L226 Difference]: Without dead ends: 1068 [2021-10-29 04:40:03,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:40:03,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-29 04:40:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2021-10-29 04:40:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.4166666666666667) internal successors, (1411), 996 states have internal predecessors, (1411), 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 04:40:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1411 transitions. [2021-10-29 04:40:03,354 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1411 transitions. Word has length 145 [2021-10-29 04:40:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:40:03,354 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1411 transitions. [2021-10-29 04:40:03,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 04:40:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1411 transitions. [2021-10-29 04:40:03,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-10-29 04:40:03,358 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:40:03,358 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-10-29 04:40:03,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:40:03,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-29 04:40:03,572 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:40:03,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:40:03,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1520553140, now seen corresponding path program 1 times [2021-10-29 04:40:03,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:40:03,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872525982] [2021-10-29 04:40:03,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:40:03,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:40:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:40:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-10-29 04:40:03,645 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:40:03,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872525982] [2021-10-29 04:40:03,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872525982] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:40:03,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940432787] [2021-10-29 04:40:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:40:03,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:40:03,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:40:03,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:40:03,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 04:40:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:40:04,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:40:04,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:40:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-29 04:40:04,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:40:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-29 04:40:04,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940432787] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:40:04,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 04:40:04,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-29 04:40:04,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678110665] [2021-10-29 04:40:04,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:40:04,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:40:04,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:40:04,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:40:04,927 INFO L87 Difference]: Start difference. First operand 997 states and 1411 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 04:40:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:40:05,240 INFO L93 Difference]: Finished difference Result 2062 states and 2915 transitions. [2021-10-29 04:40:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:40:05,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 156 [2021-10-29 04:40:05,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:40:05,242 INFO L225 Difference]: With dead ends: 2062 [2021-10-29 04:40:05,242 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:40:05,244 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:40:05,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:40:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:40:05,245 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 04:40:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:40:05,245 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 156 [2021-10-29 04:40:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:40:05,245 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:40:05,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 04:40:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:40:05,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:40:05,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:40:05,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:40:05,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:40:05,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:40:05,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:40:05,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:40:05,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:40:05,669 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-29 04:40:05,670 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-29 04:40:05,670 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-29 04:40:05,670 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-29 04:40:05,670 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-29 04:40:05,671 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-29 04:40:05,671 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-29 04:40:05,671 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-29 04:40:05,671 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-29 04:40:05,672 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-29 04:40:05,672 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-29 04:40:05,672 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-29 04:40:05,672 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-29 04:40:05,672 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-29 04:40:05,672 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-29 04:40:05,672 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-29 04:40:05,673 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-29 04:40:05,673 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-29 04:40:05,673 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-29 04:40:05,674 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-29 04:40:05,674 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-29 04:40:05,674 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-29 04:40:05,674 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-29 04:40:05,674 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-29 04:40:05,674 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-29 04:40:05,675 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-29 04:40:05,675 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-29 04:40:05,675 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-29 04:40:05,675 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-29 04:40:05,675 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-29 04:40:05,675 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-29 04:40:05,676 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-29 04:40:05,676 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-29 04:40:05,676 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-29 04:40:05,676 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-29 04:40:05,676 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-29 04:40:05,676 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:40:05,676 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-29 04:40:05,676 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-29 04:40:05,676 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-29 04:40:05,676 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (= ~a17~0 1)) (.cse3 (<= 14 ~a8~0)) (.cse4 (<= ~a17~0 0)) (.cse0 (= ~a21~0 1)) (.cse2 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse1) (<= ~a21~0 0) (and .cse4 .cse3 .cse0) (and .cse4 .cse0 (<= ~a16~0 5)) (and .cse4 .cse0 .cse2))) [2021-10-29 04:40:05,677 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-29 04:40:05,677 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-29 04:40:05,677 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-29 04:40:05,677 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-29 04:40:05,677 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-29 04:40:05,677 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-29 04:40:05,677 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-29 04:40:05,678 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:40:05,678 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-29 04:40:05,678 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-29 04:40:05,678 INFO L857 garLoopResultBuilder]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2021-10-29 04:40:05,678 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-29 04:40:05,678 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-29 04:40:05,678 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-29 04:40:05,678 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-29 04:40:05,679 INFO L857 garLoopResultBuilder]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2021-10-29 04:40:05,679 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-29 04:40:05,679 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-29 04:40:05,679 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-29 04:40:05,679 INFO L857 garLoopResultBuilder]: For program point L558(line 558) no Hoare annotation was computed. [2021-10-29 04:40:05,679 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-29 04:40:05,679 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-29 04:40:05,680 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-29 04:40:05,680 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-29 04:40:05,680 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-29 04:40:05,680 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-29 04:40:05,681 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (= ~a17~0 1)) (.cse3 (<= 14 ~a8~0)) (.cse4 (<= ~a17~0 0)) (.cse0 (= ~a21~0 1)) (.cse2 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse1) (<= ~a21~0 0) (and .cse4 .cse3 .cse0) (and .cse4 .cse0 (<= ~a16~0 5)) (and .cse4 .cse0 .cse2))) [2021-10-29 04:40:05,684 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-29 04:40:05,684 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 558) no Hoare annotation was computed. [2021-10-29 04:40:05,685 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-29 04:40:05,685 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-29 04:40:05,685 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-29 04:40:05,685 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-29 04:40:05,685 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-29 04:40:05,685 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-29 04:40:05,688 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:40:05,690 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:40:05,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:40:05 BoogieIcfgContainer [2021-10-29 04:40:05,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:40:05,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:40:05,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:40:05,722 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:40:05,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:39:55" (3/4) ... [2021-10-29 04:40:05,725 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:40:05,765 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2021-10-29 04:40:05,767 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-29 04:40:05,769 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 04:40:05,770 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:40:05,897 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:40:05,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:40:05,898 INFO L168 Benchmark]: Toolchain (without parser) took 13367.67 ms. Allocated memory was 107.0 MB in the beginning and 207.6 MB in the end (delta: 100.7 MB). Free memory was 70.7 MB in the beginning and 150.7 MB in the end (delta: -80.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:05,899 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory was 84.9 MB in the beginning and 84.9 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:40:05,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.39 ms. Allocated memory is still 107.0 MB. Free memory was 70.5 MB in the beginning and 66.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:05,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.07 ms. Allocated memory is still 107.0 MB. Free memory was 66.0 MB in the beginning and 59.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:05,900 INFO L168 Benchmark]: Boogie Preprocessor took 93.29 ms. Allocated memory is still 107.0 MB. Free memory was 59.7 MB in the beginning and 55.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:05,900 INFO L168 Benchmark]: RCFGBuilder took 2038.39 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 55.5 MB in the beginning and 67.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:05,901 INFO L168 Benchmark]: TraceAbstraction took 10308.90 ms. Allocated memory was 140.5 MB in the beginning and 207.6 MB in the end (delta: 67.1 MB). Free memory was 66.2 MB in the beginning and 166.5 MB in the end (delta: -100.3 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:05,901 INFO L168 Benchmark]: Witness Printer took 176.39 ms. Allocated memory is still 207.6 MB. Free memory was 166.5 MB in the beginning and 150.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:40:05,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory was 84.9 MB in the beginning and 84.9 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 644.39 ms. Allocated memory is still 107.0 MB. Free memory was 70.5 MB in the beginning and 66.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.07 ms. Allocated memory is still 107.0 MB. Free memory was 66.0 MB in the beginning and 59.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.29 ms. Allocated memory is still 107.0 MB. Free memory was 59.7 MB in the beginning and 55.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2038.39 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 55.5 MB in the beginning and 67.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10308.90 ms. Allocated memory was 140.5 MB in the beginning and 207.6 MB in the end (delta: 67.1 MB). Free memory was 66.2 MB in the beginning and 166.5 MB in the end (delta: -100.3 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. * Witness Printer took 176.39 ms. Allocated memory is still 207.6 MB. Free memory was 166.5 MB in the beginning and 150.7 MB in the end (delta: 15.7 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: 558]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.2s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 485 SDtfs, 428 SDslu, 38 SDs, 0 SdLazy, 2147 SolverSat, 533 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1095 GetRequests, 1073 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=997occurred in iteration=9, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 639 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 109 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1362 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 162 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 1707 NumberOfCodeBlocks, 1707 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2228 ConstructedInterpolants, 0 QuantifiedInterpolants, 4674 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1521 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 1306/1318 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: 593]: Loop Invariant Derived loop invariant: ((((((a21 == 1 && a17 == 1) && a20 == 1) || ((14 <= a8 && a21 == 1) && a17 == 1)) || a21 <= 0) || ((a17 <= 0 && 14 <= a8) && a21 == 1)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((a21 == 1 && a17 == 1) && a20 == 1) || ((14 <= a8 && a21 == 1) && a17 == 1)) || a21 <= 0) || ((a17 <= 0 && 14 <= a8) && a21 == 1)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a20 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-29 04:40:05,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630e993e-78f8-40c4-ba28-762db387e043/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...