./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V --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 a650c00976061981bc34910bafee4d11d94c16289374f008af5a1f8d17e97036 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:46:21,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:46:21,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:46:21,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:46:21,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:46:21,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:46:21,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:46:21,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:46:21,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:46:21,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:46:21,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:46:21,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:46:21,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:46:21,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:46:21,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:46:21,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:46:21,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:46:21,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:46:21,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:46:21,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:46:21,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:46:21,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:46:21,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:46:21,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:46:21,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:46:21,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:46:21,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:46:21,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:46:21,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:46:21,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:46:21,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:46:21,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:46:21,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:46:21,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:46:21,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:46:21,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:46:21,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:46:21,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:46:21,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:46:21,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:46:21,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:46:21,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:46:21,352 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:46:21,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:46:21,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:46:21,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:46:21,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:46:21,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:46:21,356 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:46:21,357 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:46:21,357 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:46:21,358 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:46:21,358 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:46:21,358 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:46:21,359 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:46:21,359 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:46:21,360 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:46:21,360 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:46:21,360 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:46:21,361 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:46:21,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:46:21,362 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:46:21,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:46:21,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:46:21,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:46:21,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:46:21,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:46:21,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:46:21,365 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:46:21,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:46:21,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:46:21,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:46:21,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:46:21,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:46:21,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:46:21,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:46:21,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:46:21,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:46:21,369 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:46:21,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:46:21,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:46:21,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:46:21,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:46:21,370 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_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a650c00976061981bc34910bafee4d11d94c16289374f008af5a1f8d17e97036 [2021-11-23 02:46:21,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:46:21,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:46:21,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:46:21,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:46:21,668 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:46:21,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2021-11-23 02:46:21,758 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/data/9542dfa8e/0445146cd2e7460fb886d01bfb7a0ba6/FLAGa033a9d39 [2021-11-23 02:46:22,272 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:46:22,272 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2021-11-23 02:46:22,289 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/data/9542dfa8e/0445146cd2e7460fb886d01bfb7a0ba6/FLAGa033a9d39 [2021-11-23 02:46:22,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/data/9542dfa8e/0445146cd2e7460fb886d01bfb7a0ba6 [2021-11-23 02:46:22,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:46:22,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:46:22,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:46:22,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:46:22,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:46:22,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:46:22" (1/1) ... [2021-11-23 02:46:22,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628326d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:22, skipping insertion in model container [2021-11-23 02:46:22,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:46:22" (1/1) ... [2021-11-23 02:46:22,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:46:22,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:46:22,878 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_4c27be91-3512-49e8-89f1-a88e2eb345be/sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2021-11-23 02:46:23,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:46:23,084 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:46:23,108 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_4c27be91-3512-49e8-89f1-a88e2eb345be/sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2021-11-23 02:46:23,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:46:23,239 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:46:23,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:23 WrapperNode [2021-11-23 02:46:23,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:46:23,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:46:23,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:46:23,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:46:23,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:23" (1/1) ... [2021-11-23 02:46:23,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:23" (1/1) ... [2021-11-23 02:46:23,308 INFO L137 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 289 [2021-11-23 02:46:23,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:46:23,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:46:23,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:46:23,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:46:23,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:23" (1/1) ... [2021-11-23 02:46:23,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:23" (1/1) ... [2021-11-23 02:46:23,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:23" (1/1) ... [2021-11-23 02:46:23,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:23" (1/1) ... [2021-11-23 02:46:23,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:23" (1/1) ... [2021-11-23 02:46:23,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:23" (1/1) ... [2021-11-23 02:46:23,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:23" (1/1) ... [2021-11-23 02:46:23,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:46:23,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:46:23,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:46:23,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:46:23,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:23" (1/1) ... [2021-11-23 02:46:23,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:46:23,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:46:23,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:46:23,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:46:23,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:46:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 02:46:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:46:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:46:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:46:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-23 02:46:23,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-23 02:46:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-23 02:46:23,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-23 02:46:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-23 02:46:23,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-23 02:46:23,448 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-11-23 02:46:23,448 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-11-23 02:46:23,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:46:23,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 02:46:23,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:46:23,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:46:23,451 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 02:46:23,644 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:46:23,646 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:46:24,243 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:46:24,665 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:46:24,665 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:46:24,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:24 BoogieIcfgContainer [2021-11-23 02:46:24,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:46:24,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:46:24,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:46:24,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:46:24,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:46:22" (1/3) ... [2021-11-23 02:46:24,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@833b876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:46:24, skipping insertion in model container [2021-11-23 02:46:24,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:23" (2/3) ... [2021-11-23 02:46:24,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@833b876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:46:24, skipping insertion in model container [2021-11-23 02:46:24,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:24" (3/3) ... [2021-11-23 02:46:24,677 INFO L111 eAbstractionObserver]: Analyzing ICFG mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2021-11-23 02:46:24,687 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 02:46:24,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:46:24,688 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 02:46:24,688 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 02:46:24,724 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,724 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,724 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,725 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,725 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,725 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,725 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,726 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,726 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,726 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,726 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,727 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,727 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,727 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,727 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,728 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,728 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,728 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,728 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,728 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,729 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,729 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,729 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,729 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,730 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,730 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,730 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,730 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,730 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,731 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,731 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,731 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,731 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,733 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,733 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,733 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,734 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,734 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,734 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,734 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,735 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,735 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,735 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,735 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,736 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,736 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,736 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,736 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,737 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,737 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,737 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,737 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,737 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,738 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,738 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,738 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,738 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,739 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,739 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,739 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,739 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,740 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,740 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,740 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,740 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,740 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,741 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,741 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,741 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,742 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,742 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,742 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,742 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,742 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,743 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,743 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,743 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,744 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,747 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,747 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,747 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,748 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,748 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,748 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,748 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,748 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,749 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,749 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,750 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,750 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,750 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,751 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,751 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,751 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,752 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,752 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,752 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,752 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,752 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,753 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,753 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,753 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,753 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,753 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,754 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,754 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,754 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,755 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:46:24,755 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-23 02:46:24,800 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:46:24,807 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 [2021-11-23 02:46:24,807 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-23 02:46:24,822 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-23 02:46:24,835 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 132 transitions, 284 flow [2021-11-23 02:46:24,838 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 132 transitions, 284 flow [2021-11-23 02:46:24,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 284 flow [2021-11-23 02:46:24,894 INFO L129 PetriNetUnfolder]: 2/128 cut-off events. [2021-11-23 02:46:24,894 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-23 02:46:24,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2021-11-23 02:46:24,903 INFO L116 LiptonReduction]: Number of co-enabled transitions 2952 [2021-11-23 02:46:33,792 INFO L131 LiptonReduction]: Checked pairs total: 7591 [2021-11-23 02:46:33,793 INFO L133 LiptonReduction]: Total number of compositions: 111 [2021-11-23 02:46:33,801 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 33 transitions, 86 flow [2021-11-23 02:46:33,964 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2762 states, 2759 states have (on average 4.042044218919899) internal successors, (11152), 2761 states have internal predecessors, (11152), 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) [2021-11-23 02:46:33,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 2762 states, 2759 states have (on average 4.042044218919899) internal successors, (11152), 2761 states have internal predecessors, (11152), 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) [2021-11-23 02:46:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:46:33,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:33,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:33,986 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash -914405973, now seen corresponding path program 1 times [2021-11-23 02:46:34,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:34,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206037987] [2021-11-23 02:46:34,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:34,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:34,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:34,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206037987] [2021-11-23 02:46:34,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206037987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:34,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:34,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:46:34,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542841288] [2021-11-23 02:46:34,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:34,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:46:34,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:34,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:46:34,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:34,383 INFO L87 Difference]: Start difference. First operand has 2762 states, 2759 states have (on average 4.042044218919899) internal successors, (11152), 2761 states have internal predecessors, (11152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:46:34,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:34,576 INFO L93 Difference]: Finished difference Result 2282 states and 8688 transitions. [2021-11-23 02:46:34,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:46:34,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 02:46:34,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:34,653 INFO L225 Difference]: With dead ends: 2282 [2021-11-23 02:46:34,653 INFO L226 Difference]: Without dead ends: 2202 [2021-11-23 02:46:34,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:46:34,656 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:34,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:34,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2021-11-23 02:46:34,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 2202. [2021-11-23 02:46:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2201 states have (on average 3.8273512039981825) internal successors, (8424), 2201 states have internal predecessors, (8424), 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) [2021-11-23 02:46:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 8424 transitions. [2021-11-23 02:46:34,842 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 8424 transitions. Word has length 9 [2021-11-23 02:46:34,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:34,844 INFO L470 AbstractCegarLoop]: Abstraction has 2202 states and 8424 transitions. [2021-11-23 02:46:34,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:46:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 8424 transitions. [2021-11-23 02:46:34,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:46:34,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:34,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:34,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:46:34,849 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:34,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1912180752, now seen corresponding path program 1 times [2021-11-23 02:46:34,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:34,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931178766] [2021-11-23 02:46:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:34,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:34,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:34,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:34,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931178766] [2021-11-23 02:46:34,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931178766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:34,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:34,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:46:34,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440903677] [2021-11-23 02:46:34,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:34,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:46:34,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:34,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:46:34,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:46:34,974 INFO L87 Difference]: Start difference. First operand 2202 states and 8424 transitions. Second operand has 4 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) [2021-11-23 02:46:35,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:35,150 INFO L93 Difference]: Finished difference Result 2522 states and 9340 transitions. [2021-11-23 02:46:35,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:46:35,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2021-11-23 02:46:35,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:35,176 INFO L225 Difference]: With dead ends: 2522 [2021-11-23 02:46:35,177 INFO L226 Difference]: Without dead ends: 2122 [2021-11-23 02:46:35,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:35,181 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:35,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 18 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:35,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-11-23 02:46:35,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2122. [2021-11-23 02:46:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 3.8000942951438) internal successors, (8060), 2121 states have internal predecessors, (8060), 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) [2021-11-23 02:46:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 8060 transitions. [2021-11-23 02:46:35,355 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 8060 transitions. Word has length 12 [2021-11-23 02:46:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:35,356 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 8060 transitions. [2021-11-23 02:46:35,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2021-11-23 02:46:35,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 8060 transitions. [2021-11-23 02:46:35,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:46:35,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:35,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:35,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:46:35,361 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:35,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:35,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1243152337, now seen corresponding path program 1 times [2021-11-23 02:46:35,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:35,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701556891] [2021-11-23 02:46:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:35,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:35,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:35,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701556891] [2021-11-23 02:46:35,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701556891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:35,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:35,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:46:35,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917308362] [2021-11-23 02:46:35,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:35,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:46:35,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:35,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:46:35,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:46:35,496 INFO L87 Difference]: Start difference. First operand 2122 states and 8060 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-11-23 02:46:35,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:35,653 INFO L93 Difference]: Finished difference Result 2362 states and 8712 transitions. [2021-11-23 02:46:35,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:46:35,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 [2021-11-23 02:46:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:35,676 INFO L225 Difference]: With dead ends: 2362 [2021-11-23 02:46:35,677 INFO L226 Difference]: Without dead ends: 2042 [2021-11-23 02:46:35,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:35,679 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 32 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:35,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 18 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:35,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2021-11-23 02:46:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 2042. [2021-11-23 02:46:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 2041 states have (on average 3.770700636942675) internal successors, (7696), 2041 states have internal predecessors, (7696), 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) [2021-11-23 02:46:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 7696 transitions. [2021-11-23 02:46:35,849 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 7696 transitions. Word has length 13 [2021-11-23 02:46:35,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:35,850 INFO L470 AbstractCegarLoop]: Abstraction has 2042 states and 7696 transitions. [2021-11-23 02:46:35,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-11-23 02:46:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 7696 transitions. [2021-11-23 02:46:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:46:35,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:35,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:35,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:46:35,858 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:35,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:35,859 INFO L85 PathProgramCache]: Analyzing trace with hash -876622820, now seen corresponding path program 1 times [2021-11-23 02:46:35,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:35,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842688788] [2021-11-23 02:46:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:35,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:36,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:36,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842688788] [2021-11-23 02:46:36,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842688788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:36,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:36,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:36,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756598816] [2021-11-23 02:46:36,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:36,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:46:36,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:46:36,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:36,105 INFO L87 Difference]: Start difference. First operand 2042 states and 7696 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-23 02:46:36,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:36,276 INFO L93 Difference]: Finished difference Result 2290 states and 8372 transitions. [2021-11-23 02:46:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:46:36,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-11-23 02:46:36,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:36,341 INFO L225 Difference]: With dead ends: 2290 [2021-11-23 02:46:36,341 INFO L226 Difference]: Without dead ends: 1970 [2021-11-23 02:46:36,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:46:36,343 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:36,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 24 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2021-11-23 02:46:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1970. [2021-11-23 02:46:36,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1969 states have (on average 3.7480954799390553) internal successors, (7380), 1969 states have internal predecessors, (7380), 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) [2021-11-23 02:46:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 7380 transitions. [2021-11-23 02:46:36,451 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 7380 transitions. Word has length 14 [2021-11-23 02:46:36,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:36,451 INFO L470 AbstractCegarLoop]: Abstraction has 1970 states and 7380 transitions. [2021-11-23 02:46:36,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-23 02:46:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 7380 transitions. [2021-11-23 02:46:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 02:46:36,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:36,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:36,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:46:36,456 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:36,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1466565069, now seen corresponding path program 1 times [2021-11-23 02:46:36,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:36,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352367119] [2021-11-23 02:46:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:36,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:36,536 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:36,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352367119] [2021-11-23 02:46:36,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352367119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:36,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:36,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:36,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263024626] [2021-11-23 02:46:36,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:36,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:46:36,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:36,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:46:36,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:46:36,547 INFO L87 Difference]: Start difference. First operand 1970 states and 7380 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:46:36,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:36,712 INFO L93 Difference]: Finished difference Result 3042 states and 10936 transitions. [2021-11-23 02:46:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:46:36,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 02:46:36,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:36,736 INFO L225 Difference]: With dead ends: 3042 [2021-11-23 02:46:36,736 INFO L226 Difference]: Without dead ends: 2194 [2021-11-23 02:46:36,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:36,737 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:36,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 24 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:36,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2021-11-23 02:46:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 1906. [2021-11-23 02:46:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1905 states have (on average 3.5968503937007874) internal successors, (6852), 1905 states have internal predecessors, (6852), 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) [2021-11-23 02:46:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 6852 transitions. [2021-11-23 02:46:36,861 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 6852 transitions. Word has length 15 [2021-11-23 02:46:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:36,861 INFO L470 AbstractCegarLoop]: Abstraction has 1906 states and 6852 transitions. [2021-11-23 02:46:36,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:46:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 6852 transitions. [2021-11-23 02:46:36,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 02:46:36,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:36,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:36,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:46:36,865 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:36,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:36,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1081281422, now seen corresponding path program 1 times [2021-11-23 02:46:36,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:36,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412999312] [2021-11-23 02:46:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:36,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:37,046 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:37,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412999312] [2021-11-23 02:46:37,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412999312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:37,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:37,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:46:37,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69886452] [2021-11-23 02:46:37,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:37,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:46:37,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:37,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:46:37,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:46:37,051 INFO L87 Difference]: Start difference. First operand 1906 states and 6852 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:46:37,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:37,291 INFO L93 Difference]: Finished difference Result 2238 states and 7834 transitions. [2021-11-23 02:46:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:46:37,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 02:46:37,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:37,312 INFO L225 Difference]: With dead ends: 2238 [2021-11-23 02:46:37,312 INFO L226 Difference]: Without dead ends: 1930 [2021-11-23 02:46:37,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:46:37,313 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 78 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:37,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 26 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:46:37,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2021-11-23 02:46:37,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1930. [2021-11-23 02:46:37,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 3.52099533437014) internal successors, (6792), 1929 states have internal predecessors, (6792), 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) [2021-11-23 02:46:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 6792 transitions. [2021-11-23 02:46:37,390 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 6792 transitions. Word has length 15 [2021-11-23 02:46:37,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:37,390 INFO L470 AbstractCegarLoop]: Abstraction has 1930 states and 6792 transitions. [2021-11-23 02:46:37,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:46:37,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 6792 transitions. [2021-11-23 02:46:37,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:46:37,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:37,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:37,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:46:37,395 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:37,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1782229555, now seen corresponding path program 1 times [2021-11-23 02:46:37,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:37,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214021619] [2021-11-23 02:46:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:37,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:37,482 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:37,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214021619] [2021-11-23 02:46:37,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214021619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:37,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:37,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:37,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167133807] [2021-11-23 02:46:37,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:37,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:46:37,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:37,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:46:37,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:46:37,484 INFO L87 Difference]: Start difference. First operand 1930 states and 6792 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-23 02:46:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:37,644 INFO L93 Difference]: Finished difference Result 2000 states and 6404 transitions. [2021-11-23 02:46:37,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:46:37,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-11-23 02:46:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:37,663 INFO L225 Difference]: With dead ends: 2000 [2021-11-23 02:46:37,670 INFO L226 Difference]: Without dead ends: 1536 [2021-11-23 02:46:37,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:37,672 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:37,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 20 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:37,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2021-11-23 02:46:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1536. [2021-11-23 02:46:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1535 states have (on average 3.1960912052117263) internal successors, (4906), 1535 states have internal predecessors, (4906), 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) [2021-11-23 02:46:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 4906 transitions. [2021-11-23 02:46:37,729 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 4906 transitions. Word has length 17 [2021-11-23 02:46:37,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:37,729 INFO L470 AbstractCegarLoop]: Abstraction has 1536 states and 4906 transitions. [2021-11-23 02:46:37,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-23 02:46:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 4906 transitions. [2021-11-23 02:46:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:46:37,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:37,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:37,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:46:37,737 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:37,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:37,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1034882798, now seen corresponding path program 1 times [2021-11-23 02:46:37,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:37,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828634407] [2021-11-23 02:46:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:37,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:37,881 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:37,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828634407] [2021-11-23 02:46:37,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828634407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:37,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:37,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:46:37,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760262169] [2021-11-23 02:46:37,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:37,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:46:37,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:37,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:46:37,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:37,885 INFO L87 Difference]: Start difference. First operand 1536 states and 4906 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-11-23 02:46:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:38,033 INFO L93 Difference]: Finished difference Result 1298 states and 3756 transitions. [2021-11-23 02:46:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:46:38,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2021-11-23 02:46:38,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:38,038 INFO L225 Difference]: With dead ends: 1298 [2021-11-23 02:46:38,038 INFO L226 Difference]: Without dead ends: 996 [2021-11-23 02:46:38,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:46:38,039 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 58 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:38,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 28 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:38,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-23 02:46:38,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 996. [2021-11-23 02:46:38,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 2.842211055276382) internal successors, (2828), 995 states have internal predecessors, (2828), 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) [2021-11-23 02:46:38,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 2828 transitions. [2021-11-23 02:46:38,094 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 2828 transitions. Word has length 18 [2021-11-23 02:46:38,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:38,094 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 2828 transitions. [2021-11-23 02:46:38,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-11-23 02:46:38,095 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 2828 transitions. [2021-11-23 02:46:38,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:46:38,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:38,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:38,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:46:38,100 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:38,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:38,100 INFO L85 PathProgramCache]: Analyzing trace with hash -378261409, now seen corresponding path program 1 times [2021-11-23 02:46:38,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:38,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316935727] [2021-11-23 02:46:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:38,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:38,186 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:38,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316935727] [2021-11-23 02:46:38,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316935727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:38,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:38,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:46:38,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287338738] [2021-11-23 02:46:38,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:38,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:46:38,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:38,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:46:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:46:38,189 INFO L87 Difference]: Start difference. First operand 996 states and 2828 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-11-23 02:46:38,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:38,325 INFO L93 Difference]: Finished difference Result 1457 states and 3955 transitions. [2021-11-23 02:46:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:46:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-11-23 02:46:38,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:38,329 INFO L225 Difference]: With dead ends: 1457 [2021-11-23 02:46:38,330 INFO L226 Difference]: Without dead ends: 1016 [2021-11-23 02:46:38,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:38,331 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:38,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 24 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-11-23 02:46:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 972. [2021-11-23 02:46:38,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 2.695159629248198) internal successors, (2617), 971 states have internal predecessors, (2617), 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) [2021-11-23 02:46:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 2617 transitions. [2021-11-23 02:46:38,369 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 2617 transitions. Word has length 20 [2021-11-23 02:46:38,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:38,369 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 2617 transitions. [2021-11-23 02:46:38,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-11-23 02:46:38,370 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 2617 transitions. [2021-11-23 02:46:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:46:38,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:38,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:38,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:46:38,373 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:38,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:38,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1109421042, now seen corresponding path program 1 times [2021-11-23 02:46:38,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:38,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549279577] [2021-11-23 02:46:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:38,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:38,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:38,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:38,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549279577] [2021-11-23 02:46:38,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549279577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:38,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:38,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:46:38,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481118091] [2021-11-23 02:46:38,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:38,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:46:38,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:38,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:46:38,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:46:38,471 INFO L87 Difference]: Start difference. First operand 972 states and 2617 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-11-23 02:46:38,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:38,644 INFO L93 Difference]: Finished difference Result 820 states and 2148 transitions. [2021-11-23 02:46:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:46:38,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2021-11-23 02:46:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:38,647 INFO L225 Difference]: With dead ends: 820 [2021-11-23 02:46:38,648 INFO L226 Difference]: Without dead ends: 660 [2021-11-23 02:46:38,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:46:38,649 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 70 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:38,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 34 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:46:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-23 02:46:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 620. [2021-11-23 02:46:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 2.5864297253634896) internal successors, (1601), 619 states have internal predecessors, (1601), 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) [2021-11-23 02:46:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1601 transitions. [2021-11-23 02:46:38,671 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1601 transitions. Word has length 20 [2021-11-23 02:46:38,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:38,672 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 1601 transitions. [2021-11-23 02:46:38,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-11-23 02:46:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1601 transitions. [2021-11-23 02:46:38,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 02:46:38,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:38,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:38,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:46:38,675 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:38,675 INFO L85 PathProgramCache]: Analyzing trace with hash 316143839, now seen corresponding path program 1 times [2021-11-23 02:46:38,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:38,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103106514] [2021-11-23 02:46:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:38,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:38,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:38,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103106514] [2021-11-23 02:46:38,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103106514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:38,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:38,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:46:38,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448197825] [2021-11-23 02:46:38,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:38,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:46:38,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:38,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:46:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:38,744 INFO L87 Difference]: Start difference. First operand 620 states and 1601 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-23 02:46:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:38,932 INFO L93 Difference]: Finished difference Result 828 states and 2075 transitions. [2021-11-23 02:46:38,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:46:38,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 02:46:38,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:38,934 INFO L225 Difference]: With dead ends: 828 [2021-11-23 02:46:38,934 INFO L226 Difference]: Without dead ends: 450 [2021-11-23 02:46:38,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:46:38,935 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:38,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 28 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:46:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-23 02:46:38,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 444. [2021-11-23 02:46:38,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 2.3205417607223477) internal successors, (1028), 443 states have internal predecessors, (1028), 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) [2021-11-23 02:46:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1028 transitions. [2021-11-23 02:46:38,948 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1028 transitions. Word has length 23 [2021-11-23 02:46:38,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:38,949 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1028 transitions. [2021-11-23 02:46:38,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-23 02:46:38,949 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1028 transitions. [2021-11-23 02:46:38,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 02:46:38,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:38,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:38,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:46:38,951 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:38,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:38,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1565933523, now seen corresponding path program 1 times [2021-11-23 02:46:38,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:38,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792660756] [2021-11-23 02:46:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:38,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:39,149 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:39,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792660756] [2021-11-23 02:46:39,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792660756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:39,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:39,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:46:39,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476279524] [2021-11-23 02:46:39,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:39,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:46:39,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:39,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:46:39,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:46:39,151 INFO L87 Difference]: Start difference. First operand 444 states and 1028 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-11-23 02:46:39,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:39,377 INFO L93 Difference]: Finished difference Result 589 states and 1326 transitions. [2021-11-23 02:46:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:46:39,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 02:46:39,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:39,378 INFO L225 Difference]: With dead ends: 589 [2021-11-23 02:46:39,378 INFO L226 Difference]: Without dead ends: 338 [2021-11-23 02:46:39,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:46:39,379 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 50 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:39,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 40 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:46:39,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-11-23 02:46:39,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 306. [2021-11-23 02:46:39,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 2.180327868852459) internal successors, (665), 305 states have internal predecessors, (665), 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) [2021-11-23 02:46:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 665 transitions. [2021-11-23 02:46:39,388 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 665 transitions. Word has length 23 [2021-11-23 02:46:39,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:39,388 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 665 transitions. [2021-11-23 02:46:39,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-11-23 02:46:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 665 transitions. [2021-11-23 02:46:39,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 02:46:39,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:39,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:39,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:46:39,391 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:39,391 INFO L85 PathProgramCache]: Analyzing trace with hash 275639718, now seen corresponding path program 1 times [2021-11-23 02:46:39,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:39,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732943460] [2021-11-23 02:46:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:39,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:46:39,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:39,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732943460] [2021-11-23 02:46:39,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732943460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:39,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:39,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:46:39,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549777750] [2021-11-23 02:46:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:39,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:46:39,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:39,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:46:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:46:39,481 INFO L87 Difference]: Start difference. First operand 306 states and 665 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-11-23 02:46:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:39,620 INFO L93 Difference]: Finished difference Result 277 states and 608 transitions. [2021-11-23 02:46:39,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:46:39,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 02:46:39,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:39,621 INFO L225 Difference]: With dead ends: 277 [2021-11-23 02:46:39,621 INFO L226 Difference]: Without dead ends: 64 [2021-11-23 02:46:39,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:46:39,622 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 65 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:39,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 16 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:46:39,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-23 02:46:39,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-23 02:46:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.9365079365079365) internal successors, (122), 63 states have internal predecessors, (122), 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) [2021-11-23 02:46:39,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 122 transitions. [2021-11-23 02:46:39,625 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 122 transitions. Word has length 23 [2021-11-23 02:46:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:39,626 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 122 transitions. [2021-11-23 02:46:39,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-11-23 02:46:39,626 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 122 transitions. [2021-11-23 02:46:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 02:46:39,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:39,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:39,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:46:39,627 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-23 02:46:39,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:39,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1131289747, now seen corresponding path program 1 times [2021-11-23 02:46:39,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:39,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217392591] [2021-11-23 02:46:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:39,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:46:39,671 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:46:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:46:39,750 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:46:39,750 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:46:39,751 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-23 02:46:39,753 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-23 02:46:39,753 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 7 remaining) [2021-11-23 02:46:39,753 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 7 remaining) [2021-11-23 02:46:39,753 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 7 remaining) [2021-11-23 02:46:39,754 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION (1 of 7 remaining) [2021-11-23 02:46:39,754 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-23 02:46:39,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 02:46:39,756 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:39,761 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-23 02:46:39,761 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:46:39,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:46:39 BasicIcfg [2021-11-23 02:46:39,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:46:39,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:46:39,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:46:39,881 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:46:39,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:24" (3/4) ... [2021-11-23 02:46:39,883 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 02:46:39,987 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:46:39,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:46:39,988 INFO L158 Benchmark]: Toolchain (without parser) took 17385.33ms. Allocated memory was 83.9MB in the beginning and 308.3MB in the end (delta: 224.4MB). Free memory was 47.8MB in the beginning and 198.6MB in the end (delta: -150.8MB). Peak memory consumption was 185.4MB. Max. memory is 16.1GB. [2021-11-23 02:46:39,988 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory was 57.7MB in the beginning and 57.7MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:46:39,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 631.64ms. Allocated memory is still 83.9MB. Free memory was 47.6MB in the beginning and 45.4MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:46:39,989 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.04ms. Allocated memory is still 83.9MB. Free memory was 45.4MB in the beginning and 42.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:46:39,989 INFO L158 Benchmark]: Boogie Preprocessor took 36.40ms. Allocated memory is still 83.9MB. Free memory was 42.2MB in the beginning and 40.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:46:39,990 INFO L158 Benchmark]: RCFGBuilder took 1321.54ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 40.1MB in the beginning and 62.5MB in the end (delta: -22.4MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2021-11-23 02:46:39,990 INFO L158 Benchmark]: TraceAbstraction took 15210.82ms. Allocated memory was 102.8MB in the beginning and 308.3MB in the end (delta: 205.5MB). Free memory was 62.5MB in the beginning and 91.6MB in the end (delta: -29.1MB). Peak memory consumption was 177.1MB. Max. memory is 16.1GB. [2021-11-23 02:46:39,990 INFO L158 Benchmark]: Witness Printer took 106.32ms. Allocated memory is still 308.3MB. Free memory was 91.6MB in the beginning and 198.6MB in the end (delta: -107.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:46:39,993 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory was 57.7MB in the beginning and 57.7MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 631.64ms. Allocated memory is still 83.9MB. Free memory was 47.6MB in the beginning and 45.4MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.04ms. Allocated memory is still 83.9MB. Free memory was 45.4MB in the beginning and 42.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.40ms. Allocated memory is still 83.9MB. Free memory was 42.2MB in the beginning and 40.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1321.54ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 40.1MB in the beginning and 62.5MB in the end (delta: -22.4MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15210.82ms. Allocated memory was 102.8MB in the beginning and 308.3MB in the end (delta: 205.5MB). Free memory was 62.5MB in the beginning and 91.6MB in the end (delta: -29.1MB). Peak memory consumption was 177.1MB. Max. memory is 16.1GB. * Witness Printer took 106.32ms. Allocated memory is still 308.3MB. Free memory was 91.6MB in the beginning and 198.6MB in the end (delta: -107.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.0s, 143 PlacesBefore, 45 PlacesAfterwards, 132 TransitionsBefore, 33 TransitionsAfterwards, 2952 CoEnabledTransitionPairs, 8 FixpointIterations, 43 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 111 TotalNumberOfCompositions, 7591 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4110, positive: 3901, positive conditional: 0, positive unconditional: 3901, negative: 209, negative conditional: 0, negative unconditional: 209, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2071, positive: 2018, positive conditional: 0, positive unconditional: 2018, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2071, positive: 1993, positive conditional: 0, positive unconditional: 1993, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 78, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 490, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 448, negative conditional: 0, negative unconditional: 448, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4110, positive: 1883, positive conditional: 0, positive unconditional: 1883, negative: 156, negative conditional: 0, negative unconditional: 156, unknown: 2071, unknown conditional: 0, unknown unconditional: 2071] , Statistics on independence cache: Total cache size (in pairs): 259, Positive cache size: 236, Positive conditional cache size: 0, Positive unconditional cache size: 236, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - 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: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p3_EAX = 0; [L714] 0 int a = 0; [L715] 0 _Bool main$tmp_guard0; [L716] 0 _Bool main$tmp_guard1; [L718] 0 int x = 0; [L720] 0 int y = 0; [L722] 0 int z = 0; [L723] 0 _Bool z$flush_delayed; [L724] 0 int z$mem_tmp; [L725] 0 _Bool z$r_buff0_thd0; [L726] 0 _Bool z$r_buff0_thd1; [L727] 0 _Bool z$r_buff0_thd2; [L728] 0 _Bool z$r_buff0_thd3; [L729] 0 _Bool z$r_buff0_thd4; [L730] 0 _Bool z$r_buff1_thd0; [L731] 0 _Bool z$r_buff1_thd1; [L732] 0 _Bool z$r_buff1_thd2; [L733] 0 _Bool z$r_buff1_thd3; [L734] 0 _Bool z$r_buff1_thd4; [L735] 0 _Bool z$read_delayed; [L736] 0 int *z$read_delayed_var; [L737] 0 int z$w_buff0; [L738] 0 _Bool z$w_buff0_used; [L739] 0 int z$w_buff1; [L740] 0 _Bool z$w_buff1_used; [L741] 0 _Bool weak$$choice0; [L742] 0 _Bool weak$$choice2; [L834] 0 pthread_t t1517; [L835] FCALL, FORK 0 pthread_create(&t1517, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1517, ((void *)0), P0, ((void *)0))=-2, t1517={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L836] 0 pthread_t t1518; [L837] FCALL, FORK 0 pthread_create(&t1518, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1518, ((void *)0), P1, ((void *)0))=-1, t1517={5:0}, t1518={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L838] 0 pthread_t t1519; [L839] FCALL, FORK 0 pthread_create(&t1519, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1519, ((void *)0), P2, ((void *)0))=0, t1517={5:0}, t1518={6:0}, t1519={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L840] 0 pthread_t t1520; [L841] FCALL, FORK 0 pthread_create(&t1520, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1520, ((void *)0), P3, ((void *)0))=1, t1517={5:0}, t1518={6:0}, t1519={7:0}, t1520={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L796] 4 z$w_buff1 = z$w_buff0 [L797] 4 z$w_buff0 = 2 [L798] 4 z$w_buff1_used = z$w_buff0_used [L799] 4 z$w_buff0_used = (_Bool)1 [L800] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L800] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L801] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L802] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L803] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L804] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L805] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L806] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L809] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L746] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L749] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L761] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L764] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L776] 3 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L769] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L771] 2 return 0; [L754] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L756] 1 return 0; [L779] 3 z = 1 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L812] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L812] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L813] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L813] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L814] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L814] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L815] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L815] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L816] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L816] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L819] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L821] 4 return 0; [L782] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L782] EXPR 3 z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z [L782] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L782] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L783] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L783] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L784] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L784] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L785] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L785] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L786] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L786] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L789] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L791] 3 return 0; [L843] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L845] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L845] RET 0 assume_abort_if_not(main$tmp_guard0) [L847] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L847] EXPR 0 z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z [L847] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L847] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L848] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L848] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L849] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L849] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L850] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L850] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L851] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L851] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L854] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L855] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L856] 0 z$flush_delayed = weak$$choice2 [L857] 0 z$mem_tmp = z [L858] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L858] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L859] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L859] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0) [L859] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L859] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L860] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L860] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1) [L860] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L860] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L861] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L861] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used) [L861] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L861] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L862] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L862] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L862] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L862] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L863] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L863] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0) [L863] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L863] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L864] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L864] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L864] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L864] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L865] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2 && __unbuffered_p3_EAX == 0) [L866] EXPR 0 z$flush_delayed ? z$mem_tmp : z [L866] 0 z = z$flush_delayed ? z$mem_tmp : z [L867] 0 z$flush_delayed = (_Bool)0 [L869] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=55, weak$$choice2=0, x=2, y=2, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 841]: 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: 839]: 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: 835]: 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: 837]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 166 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 15.0s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 554 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 554 mSDsluCounter, 308 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 946 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1470 IncrementalHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 110 mSDtfsCounter, 1470 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2762occurred in iteration=0, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 410 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 248 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 1129 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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! [2021-11-23 02:46:40,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c27be91-3512-49e8-89f1-a88e2eb345be/bin/utaipan-EQgc7hIp5V/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