./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs --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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:59:13,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:59:13,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:59:13,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:59:13,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:59:13,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:59:13,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:59:13,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:59:13,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:59:13,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:59:13,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:59:13,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:59:13,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:59:13,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:59:13,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:59:13,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:59:13,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:59:13,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:59:13,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:59:13,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:59:13,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:59:13,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:59:13,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:59:13,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:59:13,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:59:13,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:59:13,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:59:13,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:59:13,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:59:13,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:59:13,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:59:13,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:59:13,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:59:13,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:59:13,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:59:13,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:59:13,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:59:13,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:59:13,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:59:13,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:59:13,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:59:13,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:59:13,366 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:59:13,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:59:13,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:59:13,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:59:13,368 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:59:13,368 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:59:13,368 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:59:13,369 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:59:13,369 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:59:13,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:59:13,369 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:59:13,370 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:59:13,370 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:59:13,370 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:59:13,371 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:59:13,371 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:59:13,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:59:13,372 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:59:13,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:59:13,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:59:13,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:59:13,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:59:13,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:59:13,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:59:13,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:59:13,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:59:13,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:59:13,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:59:13,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:59:13,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:59:13,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:59:13,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:59:13,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:59:13,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:59:13,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:59:13,377 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:59:13,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:59:13,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:59:13,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:59:13,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:59:13,379 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_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2021-11-19 13:59:13,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:59:13,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:59:13,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:59:13,678 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:59:13,679 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:59:13,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2021-11-19 13:59:13,762 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/data/88b99f174/06c9589d5a114170bcc8e398f1e8d8ad/FLAG6e66cd418 [2021-11-19 13:59:14,354 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:59:14,355 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2021-11-19 13:59:14,384 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/data/88b99f174/06c9589d5a114170bcc8e398f1e8d8ad/FLAG6e66cd418 [2021-11-19 13:59:14,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/data/88b99f174/06c9589d5a114170bcc8e398f1e8d8ad [2021-11-19 13:59:14,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:59:14,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:59:14,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:59:14,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:59:14,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:59:14,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:14" (1/1) ... [2021-11-19 13:59:14,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5781865f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:14, skipping insertion in model container [2021-11-19 13:59:14,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:14" (1/1) ... [2021-11-19 13:59:14,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:59:14,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:59:15,200 WARN L230 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_931571da-b919-4fa8-a473-6fd9f4ba0ec9/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2021-11-19 13:59:15,218 WARN L230 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_931571da-b919-4fa8-a473-6fd9f4ba0ec9/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2021-11-19 13:59:15,229 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:59:15,242 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:59:15,306 WARN L230 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_931571da-b919-4fa8-a473-6fd9f4ba0ec9/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2021-11-19 13:59:15,321 WARN L230 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_931571da-b919-4fa8-a473-6fd9f4ba0ec9/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2021-11-19 13:59:15,326 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:59:15,364 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:59:15,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:15 WrapperNode [2021-11-19 13:59:15,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:59:15,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:59:15,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:59:15,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:59:15,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:15" (1/1) ... [2021-11-19 13:59:15,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:15" (1/1) ... [2021-11-19 13:59:15,421 INFO L137 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2021-11-19 13:59:15,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:59:15,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:59:15,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:59:15,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:59:15,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:15" (1/1) ... [2021-11-19 13:59:15,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:15" (1/1) ... [2021-11-19 13:59:15,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:15" (1/1) ... [2021-11-19 13:59:15,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:15" (1/1) ... [2021-11-19 13:59:15,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:15" (1/1) ... [2021-11-19 13:59:15,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:15" (1/1) ... [2021-11-19 13:59:15,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:15" (1/1) ... [2021-11-19 13:59:15,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:59:15,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:59:15,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:59:15,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:59:15,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:15" (1/1) ... [2021-11-19 13:59:15,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:59:15,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:59:15,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:59:15,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:59:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 13:59:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-11-19 13:59:15,573 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-11-19 13:59:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-11-19 13:59:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-11-19 13:59:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 13:59:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-19 13:59:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:59:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:59:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:59:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:59:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:59:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:59:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:59:15,578 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 13:59:15,769 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:59:15,770 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:59:16,055 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:59:16,065 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:59:16,065 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:59:16,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:16 BoogieIcfgContainer [2021-11-19 13:59:16,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:59:16,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:59:16,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:59:16,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:59:16,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:59:14" (1/3) ... [2021-11-19 13:59:16,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad833e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:59:16, skipping insertion in model container [2021-11-19 13:59:16,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:15" (2/3) ... [2021-11-19 13:59:16,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad833e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:59:16, skipping insertion in model container [2021-11-19 13:59:16,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:16" (3/3) ... [2021-11-19 13:59:16,086 INFO L111 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2021-11-19 13:59:16,092 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 13:59:16,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:59:16,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 13:59:16,092 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 13:59:16,152 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,152 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,153 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,153 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,153 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,153 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,154 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,154 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,154 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,154 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,155 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,155 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,155 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,155 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,155 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,156 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,156 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,156 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,156 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,156 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,157 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,157 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,157 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,158 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,158 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,158 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,158 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,159 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,159 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,159 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,159 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,159 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,160 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,160 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,160 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,160 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,161 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,161 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,161 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,161 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,161 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,162 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,162 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,162 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,162 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,162 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,163 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,163 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,164 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,164 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,164 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,164 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,165 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,165 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,165 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,165 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,166 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,166 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,166 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,166 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,167 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,167 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,168 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,168 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,168 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,168 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,169 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,169 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,169 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,169 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,170 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,170 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,170 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,170 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,171 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,171 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,171 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,171 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,172 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,172 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,172 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,172 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,172 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,173 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,173 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,173 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,174 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,174 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,174 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,174 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,175 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,175 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,175 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,175 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,176 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,176 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,176 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,176 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,176 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,177 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,177 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,177 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,177 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,178 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,178 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,178 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,178 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,179 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,179 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,179 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,179 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,179 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,180 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,180 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,180 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,180 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,181 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,181 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,181 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,181 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,182 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,182 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,182 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,183 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,183 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,183 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,183 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,183 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,184 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,184 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,184 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,184 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,185 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,185 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,185 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,185 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,188 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,189 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,189 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,189 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,189 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,190 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,190 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,190 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,190 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,191 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,191 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,193 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,194 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,194 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,194 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,194 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,195 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,195 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,195 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,195 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,195 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,196 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:16,198 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-19 13:59:16,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:59:16,245 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 [2021-11-19 13:59:16,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-19 13:59:16,260 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:59:16,273 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 148 transitions, 312 flow [2021-11-19 13:59:16,276 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 148 transitions, 312 flow [2021-11-19 13:59:16,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 148 transitions, 312 flow [2021-11-19 13:59:16,339 INFO L129 PetriNetUnfolder]: 10/146 cut-off events. [2021-11-19 13:59:16,339 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-19 13:59:16,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 146 events. 10/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 262 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-11-19 13:59:16,353 INFO L116 LiptonReduction]: Number of co-enabled transitions 4204 [2021-11-19 13:59:36,517 INFO L131 LiptonReduction]: Checked pairs total: 9085 [2021-11-19 13:59:36,518 INFO L133 LiptonReduction]: Total number of compositions: 146 [2021-11-19 13:59:36,526 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 35 transitions, 86 flow [2021-11-19 13:59:36,552 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 216 states, 213 states have (on average 2.9342723004694835) internal successors, (625), 215 states have internal predecessors, (625), 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) [2021-11-19 13:59:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 213 states have (on average 2.9342723004694835) internal successors, (625), 215 states have internal predecessors, (625), 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) [2021-11-19 13:59:36,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 13:59:36,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:36,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 13:59:36,562 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:59:36,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:36,568 INFO L85 PathProgramCache]: Analyzing trace with hash 18206611, now seen corresponding path program 1 times [2021-11-19 13:59:36,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:36,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008777554] [2021-11-19 13:59:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:36,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:36,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:36,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008777554] [2021-11-19 13:59:36,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008777554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:36,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:36,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 13:59:36,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920321359] [2021-11-19 13:59:36,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:36,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:59:36,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:36,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:59:36,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:59:36,783 INFO L87 Difference]: Start difference. First operand has 216 states, 213 states have (on average 2.9342723004694835) internal successors, (625), 215 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-19 13:59:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:36,884 INFO L93 Difference]: Finished difference Result 196 states and 550 transitions. [2021-11-19 13:59:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:59:36,891 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-19 13:59:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:36,911 INFO L225 Difference]: With dead ends: 196 [2021-11-19 13:59:36,912 INFO L226 Difference]: Without dead ends: 180 [2021-11-19 13:59:36,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:59:36,919 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:36,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:59:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-19 13:59:36,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-19 13:59:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.8268156424581004) internal successors, (506), 179 states have internal predecessors, (506), 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) [2021-11-19 13:59:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 506 transitions. [2021-11-19 13:59:37,011 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 506 transitions. Word has length 4 [2021-11-19 13:59:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:37,013 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 506 transitions. [2021-11-19 13:59:37,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-19 13:59:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 506 transitions. [2021-11-19 13:59:37,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:59:37,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:37,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:37,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:59:37,017 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:59:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash -236399898, now seen corresponding path program 1 times [2021-11-19 13:59:37,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:37,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964747936] [2021-11-19 13:59:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:37,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:37,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:37,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964747936] [2021-11-19 13:59:37,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964747936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:37,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:37,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:59:37,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306919359] [2021-11-19 13:59:37,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:37,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:59:37,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:37,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:59:37,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:59:37,182 INFO L87 Difference]: Start difference. First operand 180 states and 506 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:37,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:37,284 INFO L93 Difference]: Finished difference Result 278 states and 758 transitions. [2021-11-19 13:59:37,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:59:37,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 13:59:37,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:37,292 INFO L225 Difference]: With dead ends: 278 [2021-11-19 13:59:37,292 INFO L226 Difference]: Without dead ends: 256 [2021-11-19 13:59:37,293 INFO L932 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 [2021-11-19 13:59:37,295 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:37,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 5 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:59:37,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-19 13:59:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-11-19 13:59:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 2.764705882352941) internal successors, (705), 255 states have internal predecessors, (705), 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) [2021-11-19 13:59:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 705 transitions. [2021-11-19 13:59:37,322 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 705 transitions. Word has length 8 [2021-11-19 13:59:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:37,322 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 705 transitions. [2021-11-19 13:59:37,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 705 transitions. [2021-11-19 13:59:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 13:59:37,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:37,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:37,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:59:37,330 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:59:37,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash 565176093, now seen corresponding path program 1 times [2021-11-19 13:59:37,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:37,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355932188] [2021-11-19 13:59:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:37,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:37,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:37,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355932188] [2021-11-19 13:59:37,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355932188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:37,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:37,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:59:37,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683636562] [2021-11-19 13:59:37,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:37,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:59:37,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:37,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:59:37,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:59:37,424 INFO L87 Difference]: Start difference. First operand 256 states and 705 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-19 13:59:37,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:37,514 INFO L93 Difference]: Finished difference Result 158 states and 369 transitions. [2021-11-19 13:59:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:59:37,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-11-19 13:59:37,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:37,517 INFO L225 Difference]: With dead ends: 158 [2021-11-19 13:59:37,517 INFO L226 Difference]: Without dead ends: 152 [2021-11-19 13:59:37,517 INFO L932 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 [2021-11-19 13:59:37,520 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:37,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 2 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:59:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-19 13:59:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 128. [2021-11-19 13:59:37,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.377952755905512) internal successors, (302), 127 states have internal predecessors, (302), 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) [2021-11-19 13:59:37,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 302 transitions. [2021-11-19 13:59:37,540 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 302 transitions. Word has length 12 [2021-11-19 13:59:37,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:37,541 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 302 transitions. [2021-11-19 13:59:37,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-19 13:59:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 302 transitions. [2021-11-19 13:59:37,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 13:59:37,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:37,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:37,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 13:59:37,550 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:59:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:37,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1056482210, now seen corresponding path program 1 times [2021-11-19 13:59:37,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:37,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979794158] [2021-11-19 13:59:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:37,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:37,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:37,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979794158] [2021-11-19 13:59:37,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979794158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:37,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:37,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:59:37,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188369665] [2021-11-19 13:59:37,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:37,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:59:37,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:37,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:59:37,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:59:37,689 INFO L87 Difference]: Start difference. First operand 128 states and 302 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:37,779 INFO L93 Difference]: Finished difference Result 150 states and 349 transitions. [2021-11-19 13:59:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:59:37,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-19 13:59:37,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:37,782 INFO L225 Difference]: With dead ends: 150 [2021-11-19 13:59:37,783 INFO L226 Difference]: Without dead ends: 150 [2021-11-19 13:59:37,783 INFO L932 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 [2021-11-19 13:59:37,784 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:37,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:59:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-19 13:59:37,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 144. [2021-11-19 13:59:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.3566433566433567) internal successors, (337), 143 states have internal predecessors, (337), 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) [2021-11-19 13:59:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 337 transitions. [2021-11-19 13:59:37,801 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 337 transitions. Word has length 13 [2021-11-19 13:59:37,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:37,801 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 337 transitions. [2021-11-19 13:59:37,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:37,801 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 337 transitions. [2021-11-19 13:59:37,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 13:59:37,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:37,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:37,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:59:37,803 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:59:37,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:37,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1931460305, now seen corresponding path program 1 times [2021-11-19 13:59:37,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:37,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812762217] [2021-11-19 13:59:37,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:37,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:37,852 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:59:37,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691325969] [2021-11-19 13:59:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:37,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:59:37,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:59:37,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:59:37,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:59:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:38,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 13:59:38,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:38,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:59:38,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:38,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812762217] [2021-11-19 13:59:38,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:59:38,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691325969] [2021-11-19 13:59:38,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691325969] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:38,786 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:38,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-19 13:59:38,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603643262] [2021-11-19 13:59:38,787 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:38,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:59:38,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:38,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:59:38,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:59:38,788 INFO L87 Difference]: Start difference. First operand 144 states and 337 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-11-19 13:59:40,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-19 13:59:43,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-19 13:59:43,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:43,603 INFO L93 Difference]: Finished difference Result 356 states and 826 transitions. [2021-11-19 13:59:43,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:59:43,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-19 13:59:43,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:43,607 INFO L225 Difference]: With dead ends: 356 [2021-11-19 13:59:43,607 INFO L226 Difference]: Without dead ends: 356 [2021-11-19 13:59:43,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:59:43,608 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 117 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:43,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 17 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 136 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2021-11-19 13:59:43,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-19 13:59:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 298. [2021-11-19 13:59:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.420875420875421) internal successors, (719), 297 states have internal predecessors, (719), 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) [2021-11-19 13:59:43,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 719 transitions. [2021-11-19 13:59:43,626 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 719 transitions. Word has length 15 [2021-11-19 13:59:43,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:43,627 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 719 transitions. [2021-11-19 13:59:43,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-11-19 13:59:43,627 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 719 transitions. [2021-11-19 13:59:43,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 13:59:43,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:43,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:43,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:43,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:59:43,852 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:59:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:43,853 INFO L85 PathProgramCache]: Analyzing trace with hash -254285244, now seen corresponding path program 1 times [2021-11-19 13:59:43,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:43,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623699797] [2021-11-19 13:59:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:43,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:43,880 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 13:59:43,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718014384] [2021-11-19 13:59:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:43,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:59:43,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:59:43,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:59:43,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 13:59:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:44,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:59:44,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:44,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:44,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623699797] [2021-11-19 13:59:44,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:59:44,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718014384] [2021-11-19 13:59:44,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: need array sort [2021-11-19 13:59:44,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [797756953] [2021-11-19 13:59:44,169 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 13:59:44,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:44,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-19 13:59:44,170 ERROR L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2021-11-19 13:59:44,171 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-19 13:59:44,176 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-19 13:59:44,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 6 remaining) [2021-11-19 13:59:44,178 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 6 remaining) [2021-11-19 13:59:44,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-11-19 13:59:44,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-19 13:59:44,179 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-19 13:59:44,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:44,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:59:44,406 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-19 13:59:44,409 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-19 13:59:44,409 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 13:59:44,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:59:44 BasicIcfg [2021-11-19 13:59:44,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 13:59:44,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 13:59:44,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 13:59:44,426 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 13:59:44,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:16" (3/4) ... [2021-11-19 13:59:44,429 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 13:59:44,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 13:59:44,430 INFO L158 Benchmark]: Toolchain (without parser) took 29779.23ms. Allocated memory was 119.5MB in the beginning and 174.1MB in the end (delta: 54.5MB). Free memory was 82.8MB in the beginning and 91.1MB in the end (delta: -8.3MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2021-11-19 13:59:44,430 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory was 91.1MB in the beginning and 91.1MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:59:44,430 INFO L158 Benchmark]: CACSL2BoogieTranslator took 713.31ms. Allocated memory is still 119.5MB. Free memory was 82.5MB in the beginning and 83.7MB in the end (delta: -1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:59:44,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.80ms. Allocated memory is still 119.5MB. Free memory was 83.7MB in the beginning and 81.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:59:44,431 INFO L158 Benchmark]: Boogie Preprocessor took 55.22ms. Allocated memory is still 119.5MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:59:44,431 INFO L158 Benchmark]: RCFGBuilder took 589.66ms. Allocated memory is still 119.5MB. Free memory was 79.5MB in the beginning and 64.7MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 13:59:44,432 INFO L158 Benchmark]: TraceAbstraction took 28354.64ms. Allocated memory was 119.5MB in the beginning and 174.1MB in the end (delta: 54.5MB). Free memory was 64.0MB in the beginning and 92.1MB in the end (delta: -28.1MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2021-11-19 13:59:44,432 INFO L158 Benchmark]: Witness Printer took 3.58ms. Allocated memory is still 174.1MB. Free memory is still 91.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:59:44,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory was 91.1MB in the beginning and 91.1MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 713.31ms. Allocated memory is still 119.5MB. Free memory was 82.5MB in the beginning and 83.7MB in the end (delta: -1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.80ms. Allocated memory is still 119.5MB. Free memory was 83.7MB in the beginning and 81.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.22ms. Allocated memory is still 119.5MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 589.66ms. Allocated memory is still 119.5MB. Free memory was 79.5MB in the beginning and 64.7MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 28354.64ms. Allocated memory was 119.5MB in the beginning and 174.1MB in the end (delta: 54.5MB). Free memory was 64.0MB in the beginning and 92.1MB in the end (delta: -28.1MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * Witness Printer took 3.58ms. Allocated memory is still 174.1MB. Free memory is still 91.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.2s, 145 PlacesBefore, 35 PlacesAfterwards, 148 TransitionsBefore, 35 TransitionsAfterwards, 4204 CoEnabledTransitionPairs, 8 FixpointIterations, 52 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 3 ChoiceCompositions, 146 TotalNumberOfCompositions, 9085 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6471, positive: 6220, positive conditional: 0, positive unconditional: 6220, negative: 251, negative conditional: 0, negative unconditional: 251, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3314, positive: 3251, positive conditional: 0, positive unconditional: 3251, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3314, positive: 3188, positive conditional: 0, positive unconditional: 3188, negative: 126, negative conditional: 0, negative unconditional: 126, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 126, positive: 63, positive conditional: 0, positive unconditional: 63, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , SemanticIndependenceRelation.Query Time [ms]: [ total: 11963, positive: 126, positive conditional: 0, positive unconditional: 126, negative: 216, negative conditional: 0, negative unconditional: 216, unknown: 11620, unknown conditional: 0, unknown unconditional: 11620] ], Cache Queries: [ total: 6471, positive: 2969, positive conditional: 0, positive unconditional: 2969, negative: 188, negative conditional: 0, negative unconditional: 188, unknown: 3314, unknown conditional: 0, unknown unconditional: 3314] , Statistics on independence cache: Total cache size (in pairs): 227, Positive cache size: 208, Positive conditional cache size: 0, Positive unconditional cache size: 208, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - 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 - UnprovableResult [Line: 746]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) [L723] 1 int i; [L724] 1 i=0 [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) [L739] 2 int i; [L740] 2 i=0 [L724] COND TRUE 1 i<7 [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 [L709] 1 buffer[next] = b [L710] 1 next = (next+1)%buffer_size [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] 2 reach_error() - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 211 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 28.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 20.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 158 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 304 IncrementalHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 15 mSDtfsCounter, 304 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=5, InterpolantAutomatonStates: 17, 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, 5 MinimizatonAttempts, 88 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 554 SizeOfPredicates, 5 NumberOfNonLiveVariables, 333 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-19 13:59:44,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs --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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:59:46,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:59:46,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:59:47,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:59:47,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:59:47,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:59:47,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:59:47,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:59:47,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:59:47,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:59:47,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:59:47,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:59:47,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:59:47,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:59:47,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:59:47,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:59:47,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:59:47,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:59:47,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:59:47,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:59:47,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:59:47,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:59:47,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:59:47,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:59:47,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:59:47,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:59:47,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:59:47,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:59:47,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:59:47,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:59:47,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:59:47,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:59:47,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:59:47,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:59:47,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:59:47,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:59:47,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:59:47,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:59:47,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:59:47,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:59:47,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:59:47,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:59:47,140 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:59:47,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:59:47,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:59:47,143 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:59:47,143 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:59:47,143 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:59:47,143 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:59:47,143 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:59:47,144 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:59:47,144 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:59:47,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:59:47,147 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:59:47,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:59:47,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:59:47,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:59:47,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:59:47,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:59:47,148 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:59:47,148 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:59:47,148 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:59:47,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:59:47,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:59:47,149 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:59:47,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:59:47,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:59:47,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:59:47,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:59:47,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:59:47,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:59:47,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:59:47,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:59:47,150 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:59:47,151 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:59:47,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:59:47,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:59:47,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:59:47,152 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2021-11-19 13:59:47,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:59:47,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:59:47,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:59:47,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:59:47,609 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:59:47,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2021-11-19 13:59:47,702 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/data/093c28e4f/5f2f44bc67e0441fb3b81c3ef1a9bdb6/FLAG2d07e4142 [2021-11-19 13:59:48,388 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:59:48,389 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2021-11-19 13:59:48,408 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/data/093c28e4f/5f2f44bc67e0441fb3b81c3ef1a9bdb6/FLAG2d07e4142 [2021-11-19 13:59:48,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/data/093c28e4f/5f2f44bc67e0441fb3b81c3ef1a9bdb6 [2021-11-19 13:59:48,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:59:48,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:59:48,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:59:48,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:59:48,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:59:48,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:48" (1/1) ... [2021-11-19 13:59:48,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674e6436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:48, skipping insertion in model container [2021-11-19 13:59:48,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:48" (1/1) ... [2021-11-19 13:59:48,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:59:48,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:59:49,095 WARN L230 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_931571da-b919-4fa8-a473-6fd9f4ba0ec9/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2021-11-19 13:59:49,110 WARN L230 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_931571da-b919-4fa8-a473-6fd9f4ba0ec9/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2021-11-19 13:59:49,118 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:59:49,139 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:59:49,185 WARN L230 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_931571da-b919-4fa8-a473-6fd9f4ba0ec9/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2021-11-19 13:59:49,190 WARN L230 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_931571da-b919-4fa8-a473-6fd9f4ba0ec9/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2021-11-19 13:59:49,195 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:59:49,248 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:59:49,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:49 WrapperNode [2021-11-19 13:59:49,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:59:49,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:59:49,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:59:49,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:59:49,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:49" (1/1) ... [2021-11-19 13:59:49,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:49" (1/1) ... [2021-11-19 13:59:49,333 INFO L137 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2021-11-19 13:59:49,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:59:49,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:59:49,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:59:49,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:59:49,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:49" (1/1) ... [2021-11-19 13:59:49,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:49" (1/1) ... [2021-11-19 13:59:49,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:49" (1/1) ... [2021-11-19 13:59:49,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:49" (1/1) ... [2021-11-19 13:59:49,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:49" (1/1) ... [2021-11-19 13:59:49,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:49" (1/1) ... [2021-11-19 13:59:49,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:49" (1/1) ... [2021-11-19 13:59:49,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:59:49,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:59:49,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:59:49,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:59:49,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:49" (1/1) ... [2021-11-19 13:59:49,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:59:49,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:59:49,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:59:49,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:59:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:59:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:59:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-11-19 13:59:49,537 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-11-19 13:59:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-11-19 13:59:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-11-19 13:59:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-19 13:59:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:59:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:59:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:59:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:59:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:59:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:59:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 13:59:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:59:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:59:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:59:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:59:49,542 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 13:59:49,687 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:59:49,689 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:59:50,203 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:59:50,217 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:59:50,217 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:59:50,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:50 BoogieIcfgContainer [2021-11-19 13:59:50,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:59:50,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:59:50,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:59:50,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:59:50,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:59:48" (1/3) ... [2021-11-19 13:59:50,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c647d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:59:50, skipping insertion in model container [2021-11-19 13:59:50,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:49" (2/3) ... [2021-11-19 13:59:50,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c647d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:59:50, skipping insertion in model container [2021-11-19 13:59:50,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:50" (3/3) ... [2021-11-19 13:59:50,237 INFO L111 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2021-11-19 13:59:50,244 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 13:59:50,245 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:59:50,245 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 13:59:50,245 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 13:59:50,317 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,317 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,317 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,318 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,318 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,318 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,318 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,319 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,319 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,319 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,320 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,320 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,321 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,321 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,322 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,323 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,323 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,323 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,324 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,324 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,325 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,325 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,325 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,326 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,326 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,326 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,326 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,327 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,327 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,327 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,327 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,328 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,328 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,328 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,329 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,329 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,329 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,330 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,330 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,330 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,331 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,331 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,331 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,331 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,332 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,333 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,333 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,334 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,335 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,335 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,335 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,335 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,336 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,336 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,336 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,336 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,337 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,337 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,337 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,337 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,340 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,340 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,340 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,340 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,341 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,341 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,341 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,341 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,342 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,342 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,342 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,343 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,344 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,347 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,347 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,348 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,348 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,348 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,349 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,349 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,350 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,378 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,384 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,384 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,385 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,385 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,385 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,385 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,386 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,386 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,386 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,386 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,386 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,388 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,388 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,388 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,388 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,389 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,389 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,389 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,389 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,390 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,390 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,390 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,390 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,390 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,391 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,391 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,394 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,394 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,395 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,395 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,395 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,395 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,396 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,396 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,396 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,396 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,397 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,397 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,397 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,397 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,397 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,398 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,398 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,398 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,398 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,405 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,405 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,405 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,406 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,406 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,406 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,406 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,407 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,407 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,408 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,409 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,414 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,415 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,415 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,417 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,418 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,418 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,418 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,418 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,419 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,419 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,419 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:59:50,424 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-19 13:59:50,503 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:59:50,511 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 [2021-11-19 13:59:50,512 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-19 13:59:50,535 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:59:50,557 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 147 transitions, 310 flow [2021-11-19 13:59:50,562 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 147 transitions, 310 flow [2021-11-19 13:59:50,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 147 transitions, 310 flow [2021-11-19 13:59:50,669 INFO L129 PetriNetUnfolder]: 10/145 cut-off events. [2021-11-19 13:59:50,670 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-19 13:59:50,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 145 events. 10/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 251 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-11-19 13:59:50,685 INFO L116 LiptonReduction]: Number of co-enabled transitions 4020 [2021-11-19 14:00:57,202 INFO L131 LiptonReduction]: Checked pairs total: 7807 [2021-11-19 14:00:57,203 INFO L133 LiptonReduction]: Total number of compositions: 139 [2021-11-19 14:00:57,222 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 35 transitions, 86 flow [2021-11-19 14:00:57,257 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 238 states, 235 states have (on average 2.8127659574468087) internal successors, (661), 237 states have internal predecessors, (661), 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) [2021-11-19 14:00:57,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 235 states have (on average 2.8127659574468087) internal successors, (661), 237 states have internal predecessors, (661), 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) [2021-11-19 14:00:57,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 14:00:57,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:57,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 14:00:57,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 14:00:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash 17962110, now seen corresponding path program 1 times [2021-11-19 14:00:57,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:57,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956983250] [2021-11-19 14:00:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:57,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:57,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:57,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:57,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:00:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:57,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:00:57,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:57,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:57,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:57,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956983250] [2021-11-19 14:00:57,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956983250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:57,481 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:57,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-11-19 14:00:57,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697993958] [2021-11-19 14:00:57,483 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:57,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:00:57,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:57,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:00:57,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:00:57,526 INFO L87 Difference]: Start difference. First operand has 238 states, 235 states have (on average 2.8127659574468087) internal successors, (661), 237 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-19 14:00:57,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:57,688 INFO L93 Difference]: Finished difference Result 216 states and 603 transitions. [2021-11-19 14:00:57,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:00:57,692 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-19 14:00:57,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:57,705 INFO L225 Difference]: With dead ends: 216 [2021-11-19 14:00:57,705 INFO L226 Difference]: Without dead ends: 200 [2021-11-19 14:00:57,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:00:57,710 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:57,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:00:57,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-19 14:00:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-11-19 14:00:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.809045226130653) internal successors, (559), 199 states have internal predecessors, (559), 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) [2021-11-19 14:00:57,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 559 transitions. [2021-11-19 14:00:57,768 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 559 transitions. Word has length 4 [2021-11-19 14:00:57,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:57,769 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 559 transitions. [2021-11-19 14:00:57,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-19 14:00:57,769 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 559 transitions. [2021-11-19 14:00:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 14:00:57,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:57,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:57,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:57,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:57,984 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 14:00:57,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:57,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1596754651, now seen corresponding path program 1 times [2021-11-19 14:00:57,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:57,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138394423] [2021-11-19 14:00:57,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:57,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:57,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:57,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:57,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:00:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:58,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:00:58,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:58,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:58,140 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:58,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138394423] [2021-11-19 14:00:58,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138394423] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:58,141 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:58,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:00:58,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309298181] [2021-11-19 14:00:58,142 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:58,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:00:58,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:58,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:00:58,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:00:58,144 INFO L87 Difference]: Start difference. First operand 200 states and 559 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:58,370 INFO L93 Difference]: Finished difference Result 316 states and 859 transitions. [2021-11-19 14:00:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:00:58,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 14:00:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:58,374 INFO L225 Difference]: With dead ends: 316 [2021-11-19 14:00:58,374 INFO L226 Difference]: Without dead ends: 290 [2021-11-19 14:00:58,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:00:58,376 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:58,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 7 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:00:58,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-19 14:00:58,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-19 14:00:58,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.7439446366782008) internal successors, (793), 289 states have internal predecessors, (793), 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) [2021-11-19 14:00:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 793 transitions. [2021-11-19 14:00:58,403 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 793 transitions. Word has length 8 [2021-11-19 14:00:58,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:58,410 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 793 transitions. [2021-11-19 14:00:58,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:00:58,411 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 793 transitions. [2021-11-19 14:00:58,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 14:00:58,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:58,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:58,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:58,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:58,626 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 14:00:58,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:58,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1210853860, now seen corresponding path program 1 times [2021-11-19 14:00:58,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:58,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213495489] [2021-11-19 14:00:58,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:58,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:58,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:58,629 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:58,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:00:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:58,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:00:58,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:58,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 14:00:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:58,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:58,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:58,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213495489] [2021-11-19 14:00:58,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213495489] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:58,877 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:58,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:00:58,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536718561] [2021-11-19 14:00:58,878 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:58,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:00:58,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:58,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:00:58,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:00:58,881 INFO L87 Difference]: Start difference. First operand 290 states and 793 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-19 14:00:59,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:59,172 INFO L93 Difference]: Finished difference Result 184 states and 440 transitions. [2021-11-19 14:00:59,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:00:59,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-11-19 14:00:59,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:59,175 INFO L225 Difference]: With dead ends: 184 [2021-11-19 14:00:59,175 INFO L226 Difference]: Without dead ends: 178 [2021-11-19 14:00:59,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:00:59,177 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:59,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 2 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:00:59,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-19 14:00:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 146. [2021-11-19 14:00:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.420689655172414) internal successors, (351), 145 states have internal predecessors, (351), 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) [2021-11-19 14:00:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 351 transitions. [2021-11-19 14:00:59,210 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 351 transitions. Word has length 12 [2021-11-19 14:00:59,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:59,211 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 351 transitions. [2021-11-19 14:00:59,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-19 14:00:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 351 transitions. [2021-11-19 14:00:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 14:00:59,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:59,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:59,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:59,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:59,428 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 14:00:59,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:59,429 INFO L85 PathProgramCache]: Analyzing trace with hash -397199381, now seen corresponding path program 1 times [2021-11-19 14:00:59,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:59,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678558694] [2021-11-19 14:00:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:59,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:59,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:59,436 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:59,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:00:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:59,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:00:59,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:59,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:00:59,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:59,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678558694] [2021-11-19 14:00:59,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678558694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:00:59,740 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:00:59,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 14:00:59,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223796061] [2021-11-19 14:00:59,740 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:59,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:00:59,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:59,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:00:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:00:59,742 INFO L87 Difference]: Start difference. First operand 146 states and 351 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-11-19 14:01:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:00,020 INFO L93 Difference]: Finished difference Result 178 states and 417 transitions. [2021-11-19 14:01:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:01:00,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-19 14:01:00,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:00,023 INFO L225 Difference]: With dead ends: 178 [2021-11-19 14:01:00,023 INFO L226 Difference]: Without dead ends: 178 [2021-11-19 14:01:00,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:01:00,025 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:00,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 8 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:01:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-19 14:01:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 146. [2021-11-19 14:01:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.3655172413793104) internal successors, (343), 145 states have internal predecessors, (343), 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) [2021-11-19 14:01:00,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 343 transitions. [2021-11-19 14:01:00,036 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 343 transitions. Word has length 13 [2021-11-19 14:01:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:00,037 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 343 transitions. [2021-11-19 14:01:00,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-11-19 14:01:00,037 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 343 transitions. [2021-11-19 14:01:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 14:01:00,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:00,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:00,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:00,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:00,248 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 14:01:00,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:00,249 INFO L85 PathProgramCache]: Analyzing trace with hash -681184283, now seen corresponding path program 1 times [2021-11-19 14:01:00,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:00,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9416631] [2021-11-19 14:01:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:00,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:00,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:00,251 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:00,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:01:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:00,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:01:00,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:00,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:01,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:01,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9416631] [2021-11-19 14:01:01,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9416631] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:01,946 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:01,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 14:01:01,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478433724] [2021-11-19 14:01:01,947 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:01,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:01:01,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:01,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:01:01,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:01:01,948 INFO L87 Difference]: Start difference. First operand 146 states and 343 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-19 14:01:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:05,276 INFO L93 Difference]: Finished difference Result 488 states and 1141 transitions. [2021-11-19 14:01:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:01:05,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-19 14:01:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:05,281 INFO L225 Difference]: With dead ends: 488 [2021-11-19 14:01:05,282 INFO L226 Difference]: Without dead ends: 488 [2021-11-19 14:01:05,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:01:05,283 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 104 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:05,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 23 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 14:01:05,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-19 14:01:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 400. [2021-11-19 14:01:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 2.4411027568922306) internal successors, (974), 399 states have internal predecessors, (974), 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) [2021-11-19 14:01:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 974 transitions. [2021-11-19 14:01:05,307 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 974 transitions. Word has length 15 [2021-11-19 14:01:05,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:05,307 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 974 transitions. [2021-11-19 14:01:05,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-19 14:01:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 974 transitions. [2021-11-19 14:01:05,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:01:05,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:05,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:05,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:05,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:05,525 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 14:01:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:05,526 INFO L85 PathProgramCache]: Analyzing trace with hash 358118185, now seen corresponding path program 1 times [2021-11-19 14:01:05,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:05,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608884787] [2021-11-19 14:01:05,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:05,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:05,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:05,527 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:05,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:01:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:05,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:01:05,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:05,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-11-19 14:01:06,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-19 14:01:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:06,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:06,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-11-19 14:01:06,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-19 14:01:06,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:06,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:06,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608884787] [2021-11-19 14:01:06,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608884787] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:06,480 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:06,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-19 14:01:06,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741107634] [2021-11-19 14:01:06,481 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:06,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:01:06,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:06,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:01:06,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:01:06,482 INFO L87 Difference]: Start difference. First operand 400 states and 974 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2021-11-19 14:01:08,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:08,089 INFO L93 Difference]: Finished difference Result 536 states and 1289 transitions. [2021-11-19 14:01:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:01:08,090 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 16 [2021-11-19 14:01:08,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:08,094 INFO L225 Difference]: With dead ends: 536 [2021-11-19 14:01:08,095 INFO L226 Difference]: Without dead ends: 520 [2021-11-19 14:01:08,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:01:08,101 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 71 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:08,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 102 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:01:08,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-11-19 14:01:08,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 430. [2021-11-19 14:01:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 2.4265734265734267) internal successors, (1041), 429 states have internal predecessors, (1041), 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) [2021-11-19 14:01:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1041 transitions. [2021-11-19 14:01:08,147 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1041 transitions. Word has length 16 [2021-11-19 14:01:08,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:08,148 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 1041 transitions. [2021-11-19 14:01:08,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2021-11-19 14:01:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1041 transitions. [2021-11-19 14:01:08,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:01:08,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:08,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:08,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:08,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:08,369 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 14:01:08,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:08,369 INFO L85 PathProgramCache]: Analyzing trace with hash 512555703, now seen corresponding path program 2 times [2021-11-19 14:01:08,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:08,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161321125] [2021-11-19 14:01:08,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:01:08,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:08,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:08,371 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:08,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:01:08,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 14:01:08,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:01:08,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:01:08,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:08,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-11-19 14:01:08,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-19 14:01:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:08,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:09,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-11-19 14:01:09,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-19 14:01:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:09,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:09,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161321125] [2021-11-19 14:01:09,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161321125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:09,253 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:09,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-19 14:01:09,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083274837] [2021-11-19 14:01:09,253 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:09,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:01:09,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:09,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:01:09,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:01:09,254 INFO L87 Difference]: Start difference. First operand 430 states and 1041 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2021-11-19 14:01:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:10,826 INFO L93 Difference]: Finished difference Result 582 states and 1393 transitions. [2021-11-19 14:01:10,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:01:10,827 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 16 [2021-11-19 14:01:10,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:10,837 INFO L225 Difference]: With dead ends: 582 [2021-11-19 14:01:10,838 INFO L226 Difference]: Without dead ends: 566 [2021-11-19 14:01:10,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:01:10,840 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 84 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:10,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 84 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:01:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-11-19 14:01:10,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 438. [2021-11-19 14:01:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 2.4324942791762014) internal successors, (1063), 437 states have internal predecessors, (1063), 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) [2021-11-19 14:01:10,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1063 transitions. [2021-11-19 14:01:10,861 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1063 transitions. Word has length 16 [2021-11-19 14:01:10,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:10,862 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1063 transitions. [2021-11-19 14:01:10,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2021-11-19 14:01:10,862 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1063 transitions. [2021-11-19 14:01:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:01:10,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:10,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:10,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:11,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:11,079 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 14:01:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:11,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1892428373, now seen corresponding path program 3 times [2021-11-19 14:01:11,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:11,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873937769] [2021-11-19 14:01:11,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:01:11,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:11,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:11,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:11,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:01:11,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-19 14:01:11,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:01:11,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 14:01:11,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:11,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-11-19 14:01:11,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-19 14:01:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:11,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:11,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-11-19 14:01:11,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-19 14:01:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:11,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:11,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873937769] [2021-11-19 14:01:11,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873937769] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:11,971 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:11,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-19 14:01:11,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202425598] [2021-11-19 14:01:11,972 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:11,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:01:11,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:11,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:01:11,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:01:11,973 INFO L87 Difference]: Start difference. First operand 438 states and 1063 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2021-11-19 14:01:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:13,420 INFO L93 Difference]: Finished difference Result 635 states and 1517 transitions. [2021-11-19 14:01:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:01:13,420 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 16 [2021-11-19 14:01:13,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:13,425 INFO L225 Difference]: With dead ends: 635 [2021-11-19 14:01:13,425 INFO L226 Difference]: Without dead ends: 614 [2021-11-19 14:01:13,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:01:13,426 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 145 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:13,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 84 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:01:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-19 14:01:13,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 456. [2021-11-19 14:01:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.435164835164835) internal successors, (1108), 455 states have internal predecessors, (1108), 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) [2021-11-19 14:01:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1108 transitions. [2021-11-19 14:01:13,446 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1108 transitions. Word has length 16 [2021-11-19 14:01:13,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:13,446 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 1108 transitions. [2021-11-19 14:01:13,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2021-11-19 14:01:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1108 transitions. [2021-11-19 14:01:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 14:01:13,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:13,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:13,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:13,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:13,666 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 14:01:13,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:13,667 INFO L85 PathProgramCache]: Analyzing trace with hash 352598995, now seen corresponding path program 4 times [2021-11-19 14:01:13,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:13,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817004001] [2021-11-19 14:01:13,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:01:13,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:13,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:13,668 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:13,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:01:13,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:01:13,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:01:13,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:01:13,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:13,893 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-19 14:01:13,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 39 [2021-11-19 14:01:14,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-11-19 14:01:14,110 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 14:01:14,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-19 14:01:14,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-19 14:01:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:14,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:16,539 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~pre11#1_73| (_ BitVec 32)) (|ULTIMATE.start_main_~#id2~0#1.offset| (_ BitVec 32))) (= ((_ sign_extend 24) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre11#1_73|)) |c_~#buffer~0.base|) (bvadd |c_~#buffer~0.offset| c_~first~0)))) (_ bv0 32))) is different from false [2021-11-19 14:01:16,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 182 [2021-11-19 14:01:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:01:16,866 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:16,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817004001] [2021-11-19 14:01:16,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817004001] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:16,866 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:16,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-19 14:01:16,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599588356] [2021-11-19 14:01:16,866 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:16,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:01:16,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:16,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:01:16,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=171, Unknown=1, NotChecked=26, Total=240 [2021-11-19 14:01:16,868 INFO L87 Difference]: Start difference. First operand 456 states and 1108 transitions. Second operand has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 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) [2021-11-19 14:01:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:18,850 INFO L93 Difference]: Finished difference Result 704 states and 1689 transitions. [2021-11-19 14:01:18,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:01:18,851 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 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 16 [2021-11-19 14:01:18,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:18,857 INFO L225 Difference]: With dead ends: 704 [2021-11-19 14:01:18,857 INFO L226 Difference]: Without dead ends: 682 [2021-11-19 14:01:18,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=98, Invalid=325, Unknown=1, NotChecked=38, Total=462 [2021-11-19 14:01:18,858 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 112 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:18,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 92 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 522 Invalid, 0 Unknown, 91 Unchecked, 1.6s Time] [2021-11-19 14:01:18,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-11-19 14:01:18,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 462. [2021-11-19 14:01:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 2.4316702819956615) internal successors, (1121), 461 states have internal predecessors, (1121), 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) [2021-11-19 14:01:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1121 transitions. [2021-11-19 14:01:18,879 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1121 transitions. Word has length 16 [2021-11-19 14:01:18,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:18,880 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 1121 transitions. [2021-11-19 14:01:18,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 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) [2021-11-19 14:01:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1121 transitions. [2021-11-19 14:01:18,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 14:01:18,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:18,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:18,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:19,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:19,097 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 14:01:19,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash -461731021, now seen corresponding path program 1 times [2021-11-19 14:01:19,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:19,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388567647] [2021-11-19 14:01:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:19,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:19,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:19,099 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:19,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:01:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:01:19,263 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:01:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:01:19,446 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-19 14:01:19,447 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:01:19,447 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-19 14:01:19,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 6 remaining) [2021-11-19 14:01:19,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 6 remaining) [2021-11-19 14:01:19,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-11-19 14:01:19,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-19 14:01:19,455 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-19 14:01:19,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:19,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:19,657 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:19,661 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-19 14:01:19,661 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:01:19,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:01:19 BasicIcfg [2021-11-19 14:01:19,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:01:19,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:01:19,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:01:19,746 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:01:19,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:50" (3/4) ... [2021-11-19 14:01:19,748 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 14:01:19,843 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:01:19,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:01:19,844 INFO L158 Benchmark]: Toolchain (without parser) took 91248.15ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 37.3MB in the beginning and 42.2MB in the end (delta: -4.9MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2021-11-19 14:01:19,844 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 58.7MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:01:19,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 651.75ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 30.3MB in the end (delta: 6.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:01:19,845 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.44ms. Allocated memory is still 58.7MB. Free memory was 30.3MB in the beginning and 28.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:01:19,845 INFO L158 Benchmark]: Boogie Preprocessor took 107.03ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 28.0MB in the beginning and 60.2MB in the end (delta: -32.1MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-11-19 14:01:19,846 INFO L158 Benchmark]: RCFGBuilder took 778.32ms. Allocated memory is still 77.6MB. Free memory was 60.2MB in the beginning and 44.9MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 14:01:19,846 INFO L158 Benchmark]: TraceAbstraction took 89518.08ms. Allocated memory is still 77.6MB. Free memory was 44.6MB in the beginning and 48.5MB in the end (delta: -3.9MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2021-11-19 14:01:19,847 INFO L158 Benchmark]: Witness Printer took 98.16ms. Allocated memory is still 77.6MB. Free memory was 48.5MB in the beginning and 42.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 14:01:19,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 58.7MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 651.75ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 30.3MB in the end (delta: 6.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.44ms. Allocated memory is still 58.7MB. Free memory was 30.3MB in the beginning and 28.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.03ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 28.0MB in the beginning and 60.2MB in the end (delta: -32.1MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * RCFGBuilder took 778.32ms. Allocated memory is still 77.6MB. Free memory was 60.2MB in the beginning and 44.9MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 89518.08ms. Allocated memory is still 77.6MB. Free memory was 44.6MB in the beginning and 48.5MB in the end (delta: -3.9MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * Witness Printer took 98.16ms. Allocated memory is still 77.6MB. Free memory was 48.5MB in the beginning and 42.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 66.6s, 144 PlacesBefore, 36 PlacesAfterwards, 147 TransitionsBefore, 35 TransitionsAfterwards, 4020 CoEnabledTransitionPairs, 8 FixpointIterations, 53 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 139 TotalNumberOfCompositions, 7807 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5528, positive: 5307, positive conditional: 0, positive unconditional: 5307, negative: 221, negative conditional: 0, negative unconditional: 221, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2946, positive: 2891, positive conditional: 0, positive unconditional: 2891, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2946, positive: 2856, positive conditional: 0, positive unconditional: 2856, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 90, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10166, positive: 244, positive conditional: 0, positive unconditional: 244, negative: 625, negative conditional: 0, negative unconditional: 625, unknown: 9298, unknown conditional: 0, unknown unconditional: 9298] ], Cache Queries: [ total: 5528, positive: 2416, positive conditional: 0, positive unconditional: 2416, negative: 166, negative conditional: 0, negative unconditional: 166, unknown: 2946, unknown conditional: 0, unknown unconditional: 2946] , Statistics on independence cache: Total cache size (in pairs): 243, Positive cache size: 224, Positive conditional cache size: 0, Positive unconditional cache size: 224, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - 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 - CounterExampleResult [Line: 746]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={11:0}, buffer_size=10, first=0, id1={7:0}, id2={-2147483637:0}, m={15:0}, next=0, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-1, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={11:0}, buffer_size=10, first=0, id1={7:0}, id2={-2147483637:0}, m={15:0}, next=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=0, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [arg={0:0}, arg={0:0}, buffer={11:0}, buffer_size=10, first=0, i=0, m={15:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 [L743] COND FALSE 2 !(\read(receive)) VAL [arg={0:0}, arg={0:0}, buffer={11:0}, buffer_size=10, first=0, i=0, m={15:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={11:0}, buffer_size=10, first=0, i=1, m={15:0}, next=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [arg={0:0}, arg={0:0}, buffer={11:0}, buffer_size=10, first=0, i=0, m={15:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 [L709] 1 buffer[next] = b VAL [\old(b)=0, b=0, buffer={11:0}, buffer_size=10, first=0, m={15:0}, next=0, receive=0, send=1] [L710] 1 next = (next+1)%buffer_size [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] 2 reach_error() VAL [arg={0:0}, arg={0:0}, buffer={11:0}, buffer_size=10, first=1, i=1, m={15:0}, next=1, receive=1, send=0] - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 208 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 89.2s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 66.7s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 581 SdHoareTripleChecker+Valid, 9.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 581 mSDsluCounter, 406 SdHoareTripleChecker+Invalid, 8.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 91 IncrementalHoareTripleChecker+Unchecked, 1109 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2272 IncrementalHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 65 mSDtfsCounter, 2272 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 231 GetRequests, 155 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=462occurred in iteration=9, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 748 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 1 QuantifiedInterpolants, 1927 SizeOfPredicates, 63 NumberOfNonLiveVariables, 825 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 14:01:19,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931571da-b919-4fa8-a473-6fd9f4ba0ec9/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE