./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0a03a5fc32da65217c1f578a6fea0c2c0e07a09fd6b8159429f8d1aa4c1c45a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:47:02,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:47:02,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:47:02,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:47:02,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:47:02,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:47:02,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:47:02,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:47:02,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:47:02,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:47:02,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:47:02,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:47:02,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:47:02,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:47:02,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:47:02,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:47:02,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:47:02,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:47:02,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:47:02,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:47:02,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:47:02,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:47:02,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:47:02,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:47:02,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:47:02,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:47:02,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:47:02,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:47:02,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:47:02,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:47:02,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:47:02,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:47:02,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:47:02,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:47:02,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:47:02,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:47:02,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:47:02,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:47:02,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:47:02,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:47:02,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:47:02,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:47:02,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:47:02,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:47:02,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:47:02,365 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:47:02,365 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:47:02,365 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:47:02,365 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:47:02,365 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:47:02,372 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:47:02,372 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:47:02,373 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:47:02,374 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:47:02,374 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:47:02,374 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:47:02,374 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:47:02,375 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:47:02,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:47:02,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:47:02,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:47:02,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:47:02,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:47:02,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:47:02,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:47:02,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:47:02,377 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:47:02,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:47:02,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:47:02,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:47:02,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:47:02,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:47:02,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:47:02,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:47:02,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:47:02,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:47:02,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:47:02,380 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:47:02,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:47:02,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:47:02,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:47:02,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:47:02,380 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_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a03a5fc32da65217c1f578a6fea0c2c0e07a09fd6b8159429f8d1aa4c1c45a8 [2021-11-19 15:47:02,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:47:02,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:47:02,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:47:02,704 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:47:02,705 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:47:02,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2021-11-19 15:47:02,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/data/5676d9dd9/445672adf8d849c0ade580780220aa08/FLAG8ed857c75 [2021-11-19 15:47:03,400 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:47:03,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2021-11-19 15:47:03,419 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/data/5676d9dd9/445672adf8d849c0ade580780220aa08/FLAG8ed857c75 [2021-11-19 15:47:03,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/data/5676d9dd9/445672adf8d849c0ade580780220aa08 [2021-11-19 15:47:03,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:47:03,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:47:03,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:47:03,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:47:03,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:47:03,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:47:03" (1/1) ... [2021-11-19 15:47:03,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@80c443d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:03, skipping insertion in model container [2021-11-19 15:47:03,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:47:03" (1/1) ... [2021-11-19 15:47:03,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:47:03,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:47:04,034 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_b5800b07-bfed-43d0-bc37-f3a993116795/sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2021-11-19 15:47:04,266 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:47:04,278 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:47:04,292 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_b5800b07-bfed-43d0-bc37-f3a993116795/sv-benchmarks/c/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2021-11-19 15:47:04,381 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:47:04,436 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:47:04,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:04 WrapperNode [2021-11-19 15:47:04,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:47:04,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:47:04,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:47:04,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:47:04,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:04" (1/1) ... [2021-11-19 15:47:04,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:04" (1/1) ... [2021-11-19 15:47:04,539 INFO L137 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 274 [2021-11-19 15:47:04,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:47:04,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:47:04,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:47:04,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:47:04,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:04" (1/1) ... [2021-11-19 15:47:04,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:04" (1/1) ... [2021-11-19 15:47:04,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:04" (1/1) ... [2021-11-19 15:47:04,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:04" (1/1) ... [2021-11-19 15:47:04,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:04" (1/1) ... [2021-11-19 15:47:04,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:04" (1/1) ... [2021-11-19 15:47:04,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:04" (1/1) ... [2021-11-19 15:47:04,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:47:04,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:47:04,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:47:04,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:47:04,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:04" (1/1) ... [2021-11-19 15:47:04,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:47:04,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:04,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:47:04,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:47:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 15:47:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-19 15:47:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:47:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:47:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:47:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-19 15:47:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-19 15:47:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-19 15:47:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-19 15:47:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-19 15:47:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-19 15:47:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 15:47:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-19 15:47:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:47:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:47:04,727 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 15:47:04,905 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:47:04,907 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:47:05,466 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:47:05,767 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:47:05,767 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 15:47:05,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:47:05 BoogieIcfgContainer [2021-11-19 15:47:05,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:47:05,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:47:05,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:47:05,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:47:05,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:47:03" (1/3) ... [2021-11-19 15:47:05,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e94102f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:47:05, skipping insertion in model container [2021-11-19 15:47:05,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:04" (2/3) ... [2021-11-19 15:47:05,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e94102f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:47:05, skipping insertion in model container [2021-11-19 15:47:05,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:47:05" (3/3) ... [2021-11-19 15:47:05,778 INFO L111 eAbstractionObserver]: Analyzing ICFG mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2021-11-19 15:47:05,784 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 15:47:05,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:47:05,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 15:47:05,785 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 15:47:05,844 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,845 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,845 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,845 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,846 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,846 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,846 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,846 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,847 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,847 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,847 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,847 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,849 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,849 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,849 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,850 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,850 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,850 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,850 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,851 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,851 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,852 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,852 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,852 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,852 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,852 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,852 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,853 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,853 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,853 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,853 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,854 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,854 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,854 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,854 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,855 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,855 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,855 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,855 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,856 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,856 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,856 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,856 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,857 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,857 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,857 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,857 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,857 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,858 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,858 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,858 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,858 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,858 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,858 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,859 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,859 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,859 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,859 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,859 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,860 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,860 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,861 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,861 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,861 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,861 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,861 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,861 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,862 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,862 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,862 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,863 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,863 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,871 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,872 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,875 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,875 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,876 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,876 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,877 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,877 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,877 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,878 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,879 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,885 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,885 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,885 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,886 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,886 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,886 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,886 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,886 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,886 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,887 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,887 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,887 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,888 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,888 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,888 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 15:47:05,888 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-19 15:47:05,953 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:47:05,963 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:47:05,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-19 15:47:05,985 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 15:47:06,000 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 113 transitions, 241 flow [2021-11-19 15:47:06,008 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 113 transitions, 241 flow [2021-11-19 15:47:06,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 113 transitions, 241 flow [2021-11-19 15:47:06,092 INFO L129 PetriNetUnfolder]: 2/110 cut-off events. [2021-11-19 15:47:06,092 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-19 15:47:06,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 110 events. 2/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2021-11-19 15:47:06,101 INFO L116 LiptonReduction]: Number of co-enabled transitions 1944 [2021-11-19 15:47:27,420 INFO L131 LiptonReduction]: Checked pairs total: 4617 [2021-11-19 15:47:27,420 INFO L133 LiptonReduction]: Total number of compositions: 100 [2021-11-19 15:47:27,429 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 26 transitions, 67 flow [2021-11-19 15:47:27,481 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 570 states, 567 states have (on average 3.2874779541446206) internal successors, (1864), 569 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 567 states have (on average 3.2874779541446206) internal successors, (1864), 569 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:27,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 15:47:27,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:27,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:27,495 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:27,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:27,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2041888110, now seen corresponding path program 1 times [2021-11-19 15:47:27,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:27,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064011381] [2021-11-19 15:47:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:27,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:27,765 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:27,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064011381] [2021-11-19 15:47:27,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064011381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:27,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:27,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 15:47:27,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242476061] [2021-11-19 15:47:27,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:27,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:27,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:27,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:27,800 INFO L87 Difference]: Start difference. First operand has 570 states, 567 states have (on average 3.2874779541446206) internal successors, (1864), 569 states have internal predecessors, (1864), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:27,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:27,931 INFO L93 Difference]: Finished difference Result 470 states and 1409 transitions. [2021-11-19 15:47:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:27,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-19 15:47:27,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:27,952 INFO L225 Difference]: With dead ends: 470 [2021-11-19 15:47:27,952 INFO L226 Difference]: Without dead ends: 450 [2021-11-19 15:47:27,953 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 [2021-11-19 15:47:27,957 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 7 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:27,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 6 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:27,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-19 15:47:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-19 15:47:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 3.024498886414254) internal successors, (1358), 449 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:28,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1358 transitions. [2021-11-19 15:47:28,035 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1358 transitions. Word has length 7 [2021-11-19 15:47:28,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:28,036 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1358 transitions. [2021-11-19 15:47:28,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1358 transitions. [2021-11-19 15:47:28,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 15:47:28,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:28,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:28,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 15:47:28,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:28,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash -545492254, now seen corresponding path program 1 times [2021-11-19 15:47:28,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:28,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788598585] [2021-11-19 15:47:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:28,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:28,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:28,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788598585] [2021-11-19 15:47:28,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788598585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:28,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:28,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 15:47:28,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533708182] [2021-11-19 15:47:28,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:28,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:28,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:28,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:28,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:28,195 INFO L87 Difference]: Start difference. First operand 450 states and 1358 transitions. 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) [2021-11-19 15:47:28,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:28,258 INFO L93 Difference]: Finished difference Result 440 states and 1320 transitions. [2021-11-19 15:47:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:28,258 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 [2021-11-19 15:47:28,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:28,264 INFO L225 Difference]: With dead ends: 440 [2021-11-19 15:47:28,265 INFO L226 Difference]: Without dead ends: 440 [2021-11-19 15:47:28,265 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 [2021-11-19 15:47:28,267 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:28,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 5 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:28,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-19 15:47:28,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2021-11-19 15:47:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.0068337129840548) internal successors, (1320), 439 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:28,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1320 transitions. [2021-11-19 15:47:28,307 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1320 transitions. Word has length 9 [2021-11-19 15:47:28,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:28,311 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1320 transitions. [2021-11-19 15:47:28,311 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) [2021-11-19 15:47:28,312 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1320 transitions. [2021-11-19 15:47:28,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 15:47:28,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:28,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:28,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 15:47:28,314 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:28,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:28,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1712781615, now seen corresponding path program 1 times [2021-11-19 15:47:28,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:28,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055598808] [2021-11-19 15:47:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:28,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:28,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:28,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055598808] [2021-11-19 15:47:28,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055598808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:28,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:28,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 15:47:28,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786818149] [2021-11-19 15:47:28,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:28,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:47:28,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:28,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:47:28,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:47:28,495 INFO L87 Difference]: Start difference. First operand 440 states and 1320 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:28,575 INFO L93 Difference]: Finished difference Result 434 states and 1298 transitions. [2021-11-19 15:47:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:28,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-11-19 15:47:28,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:28,581 INFO L225 Difference]: With dead ends: 434 [2021-11-19 15:47:28,582 INFO L226 Difference]: Without dead ends: 434 [2021-11-19 15:47:28,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:47:28,584 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:28,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 7 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-19 15:47:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2021-11-19 15:47:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.9976905311778292) internal successors, (1298), 433 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:28,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1298 transitions. [2021-11-19 15:47:28,609 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1298 transitions. Word has length 10 [2021-11-19 15:47:28,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:28,610 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1298 transitions. [2021-11-19 15:47:28,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:28,610 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1298 transitions. [2021-11-19 15:47:28,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 15:47:28,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:28,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:28,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 15:47:28,614 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:28,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash -160178974, now seen corresponding path program 1 times [2021-11-19 15:47:28,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:28,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845618792] [2021-11-19 15:47:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:28,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:28,779 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:28,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845618792] [2021-11-19 15:47:28,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845618792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:28,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:28,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 15:47:28,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530374181] [2021-11-19 15:47:28,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:28,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:47:28,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:28,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:47:28,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:28,782 INFO L87 Difference]: Start difference. First operand 434 states and 1298 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:28,881 INFO L93 Difference]: Finished difference Result 422 states and 1257 transitions. [2021-11-19 15:47:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:47:28,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 15:47:28,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:28,886 INFO L225 Difference]: With dead ends: 422 [2021-11-19 15:47:28,887 INFO L226 Difference]: Without dead ends: 422 [2021-11-19 15:47:28,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:28,888 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:28,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 11 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:28,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-11-19 15:47:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2021-11-19 15:47:28,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 2.985748218527316) internal successors, (1257), 421 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1257 transitions. [2021-11-19 15:47:28,909 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1257 transitions. Word has length 11 [2021-11-19 15:47:28,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:28,909 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 1257 transitions. [2021-11-19 15:47:28,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:28,910 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1257 transitions. [2021-11-19 15:47:28,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 15:47:28,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:28,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:28,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 15:47:28,913 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:28,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1556686663, now seen corresponding path program 1 times [2021-11-19 15:47:28,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:28,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195590962] [2021-11-19 15:47:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:28,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:29,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:29,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195590962] [2021-11-19 15:47:29,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195590962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:29,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:29,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 15:47:29,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449843095] [2021-11-19 15:47:29,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:29,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:47:29,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:29,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:47:29,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:47:29,054 INFO L87 Difference]: Start difference. First operand 422 states and 1257 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:29,140 INFO L93 Difference]: Finished difference Result 410 states and 1213 transitions. [2021-11-19 15:47:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:47:29,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 15:47:29,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:29,145 INFO L225 Difference]: With dead ends: 410 [2021-11-19 15:47:29,145 INFO L226 Difference]: Without dead ends: 410 [2021-11-19 15:47:29,146 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 [2021-11-19 15:47:29,147 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:29,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 8 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-19 15:47:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-11-19 15:47:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 2.965770171149144) internal successors, (1213), 409 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1213 transitions. [2021-11-19 15:47:29,191 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1213 transitions. Word has length 11 [2021-11-19 15:47:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:29,191 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 1213 transitions. [2021-11-19 15:47:29,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1213 transitions. [2021-11-19 15:47:29,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 15:47:29,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:29,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:29,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 15:47:29,194 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:29,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash -670645048, now seen corresponding path program 1 times [2021-11-19 15:47:29,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:29,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35109214] [2021-11-19 15:47:29,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:29,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:29,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:29,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35109214] [2021-11-19 15:47:29,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35109214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:29,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:29,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 15:47:29,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009038430] [2021-11-19 15:47:29,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:29,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:47:29,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:29,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:47:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:29,315 INFO L87 Difference]: Start difference. First operand 410 states and 1213 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:29,425 INFO L93 Difference]: Finished difference Result 438 states and 1306 transitions. [2021-11-19 15:47:29,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:47:29,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-19 15:47:29,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:29,430 INFO L225 Difference]: With dead ends: 438 [2021-11-19 15:47:29,430 INFO L226 Difference]: Without dead ends: 438 [2021-11-19 15:47:29,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:29,432 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 17 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:29,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 15 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-11-19 15:47:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2021-11-19 15:47:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 2.988558352402746) internal successors, (1306), 437 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1306 transitions. [2021-11-19 15:47:29,452 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1306 transitions. Word has length 12 [2021-11-19 15:47:29,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:29,452 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1306 transitions. [2021-11-19 15:47:29,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1306 transitions. [2021-11-19 15:47:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 15:47:29,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:29,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:29,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 15:47:29,455 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:29,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash -670581808, now seen corresponding path program 2 times [2021-11-19 15:47:29,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:29,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281459301] [2021-11-19 15:47:29,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:29,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:29,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:29,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281459301] [2021-11-19 15:47:29,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281459301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:29,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:29,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 15:47:29,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158016493] [2021-11-19 15:47:29,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:29,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:47:29,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:29,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:47:29,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:47:29,575 INFO L87 Difference]: Start difference. First operand 438 states and 1306 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:29,708 INFO L93 Difference]: Finished difference Result 478 states and 1416 transitions. [2021-11-19 15:47:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:47:29,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-19 15:47:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:29,714 INFO L225 Difference]: With dead ends: 478 [2021-11-19 15:47:29,714 INFO L226 Difference]: Without dead ends: 478 [2021-11-19 15:47:29,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:47:29,715 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 47 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:29,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 10 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-19 15:47:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 450. [2021-11-19 15:47:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 2.9465478841870825) internal successors, (1323), 449 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1323 transitions. [2021-11-19 15:47:29,735 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1323 transitions. Word has length 12 [2021-11-19 15:47:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:29,735 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1323 transitions. [2021-11-19 15:47:29,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1323 transitions. [2021-11-19 15:47:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 15:47:29,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:29,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:29,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 15:47:29,738 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:29,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:29,738 INFO L85 PathProgramCache]: Analyzing trace with hash 684741246, now seen corresponding path program 1 times [2021-11-19 15:47:29,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:29,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467139403] [2021-11-19 15:47:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:29,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:29,908 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:29,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467139403] [2021-11-19 15:47:29,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467139403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:29,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:29,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 15:47:29,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100279204] [2021-11-19 15:47:29,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:29,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:47:29,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:47:29,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:47:29,910 INFO L87 Difference]: Start difference. First operand 450 states and 1323 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:30,118 INFO L93 Difference]: Finished difference Result 438 states and 1282 transitions. [2021-11-19 15:47:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:47:30,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-19 15:47:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:30,124 INFO L225 Difference]: With dead ends: 438 [2021-11-19 15:47:30,124 INFO L226 Difference]: Without dead ends: 438 [2021-11-19 15:47:30,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:47:30,125 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:30,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 17 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:47:30,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-11-19 15:47:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 386. [2021-11-19 15:47:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 2.9376623376623376) internal successors, (1131), 385 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1131 transitions. [2021-11-19 15:47:30,142 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1131 transitions. Word has length 13 [2021-11-19 15:47:30,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:30,143 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 1131 transitions. [2021-11-19 15:47:30,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,143 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1131 transitions. [2021-11-19 15:47:30,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 15:47:30,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:30,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:30,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 15:47:30,145 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:30,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:30,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1330118502, now seen corresponding path program 1 times [2021-11-19 15:47:30,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:30,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017269901] [2021-11-19 15:47:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:30,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:30,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:30,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017269901] [2021-11-19 15:47:30,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017269901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:30,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:30,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 15:47:30,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143706470] [2021-11-19 15:47:30,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:30,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:47:30,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:30,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:47:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:47:30,306 INFO L87 Difference]: Start difference. First operand 386 states and 1131 transitions. Second operand has 4 states, 4 states have (on average 3.25) 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) [2021-11-19 15:47:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:30,410 INFO L93 Difference]: Finished difference Result 380 states and 990 transitions. [2021-11-19 15:47:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:47:30,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) 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 [2021-11-19 15:47:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:30,414 INFO L225 Difference]: With dead ends: 380 [2021-11-19 15:47:30,414 INFO L226 Difference]: Without dead ends: 280 [2021-11-19 15:47:30,415 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 [2021-11-19 15:47:30,416 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 23 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:30,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 15 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:30,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-19 15:47:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-11-19 15:47:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.5340501792114694) internal successors, (707), 279 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 707 transitions. [2021-11-19 15:47:30,429 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 707 transitions. Word has length 13 [2021-11-19 15:47:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:30,429 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 707 transitions. [2021-11-19 15:47:30,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) 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) [2021-11-19 15:47:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 707 transitions. [2021-11-19 15:47:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 15:47:30,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:30,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:30,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 15:47:30,432 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:30,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:30,432 INFO L85 PathProgramCache]: Analyzing trace with hash 950589409, now seen corresponding path program 1 times [2021-11-19 15:47:30,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:30,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336483714] [2021-11-19 15:47:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:30,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:30,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:30,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336483714] [2021-11-19 15:47:30,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336483714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:30,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:30,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 15:47:30,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909312153] [2021-11-19 15:47:30,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:30,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:47:30,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:30,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:47:30,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:47:30,520 INFO L87 Difference]: Start difference. First operand 280 states and 707 transitions. Second operand has 5 states, 5 states have (on average 2.8) 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) [2021-11-19 15:47:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:30,653 INFO L93 Difference]: Finished difference Result 235 states and 547 transitions. [2021-11-19 15:47:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:47:30,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) 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 [2021-11-19 15:47:30,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:30,656 INFO L225 Difference]: With dead ends: 235 [2021-11-19 15:47:30,656 INFO L226 Difference]: Without dead ends: 183 [2021-11-19 15:47:30,657 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 [2021-11-19 15:47:30,657 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:30,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 21 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-19 15:47:30,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-19 15:47:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.2857142857142856) internal successors, (416), 182 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 416 transitions. [2021-11-19 15:47:30,665 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 416 transitions. Word has length 14 [2021-11-19 15:47:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:30,666 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 416 transitions. [2021-11-19 15:47:30,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) 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) [2021-11-19 15:47:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 416 transitions. [2021-11-19 15:47:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 15:47:30,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:30,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:30,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 15:47:30,668 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:30,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:30,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1649180820, now seen corresponding path program 1 times [2021-11-19 15:47:30,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:30,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246409812] [2021-11-19 15:47:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:30,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:30,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:30,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246409812] [2021-11-19 15:47:30,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246409812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:30,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:30,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 15:47:30,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123723799] [2021-11-19 15:47:30,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:30,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:47:30,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:30,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:47:30,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 15:47:30,753 INFO L87 Difference]: Start difference. First operand 183 states and 416 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:30,845 INFO L93 Difference]: Finished difference Result 246 states and 546 transitions. [2021-11-19 15:47:30,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:47:30,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-19 15:47:30,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:30,847 INFO L225 Difference]: With dead ends: 246 [2021-11-19 15:47:30,847 INFO L226 Difference]: Without dead ends: 113 [2021-11-19 15:47:30,847 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 [2021-11-19 15:47:30,848 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:30,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 10 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-19 15:47:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-19 15:47:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 2.0357142857142856) internal successors, (228), 112 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 228 transitions. [2021-11-19 15:47:30,853 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 228 transitions. Word has length 16 [2021-11-19 15:47:30,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:30,854 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 228 transitions. [2021-11-19 15:47:30,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 228 transitions. [2021-11-19 15:47:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 15:47:30,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:30,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:30,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 15:47:30,855 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:30,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash 120514148, now seen corresponding path program 2 times [2021-11-19 15:47:30,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:30,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231107780] [2021-11-19 15:47:30,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:30,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:30,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:30,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231107780] [2021-11-19 15:47:30,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231107780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:30,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:30,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 15:47:30,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997792687] [2021-11-19 15:47:30,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:30,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:30,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:30,946 INFO L87 Difference]: Start difference. First operand 113 states and 228 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:30,996 INFO L93 Difference]: Finished difference Result 152 states and 299 transitions. [2021-11-19 15:47:30,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:30,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-19 15:47:30,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:31,000 INFO L225 Difference]: With dead ends: 152 [2021-11-19 15:47:31,000 INFO L226 Difference]: Without dead ends: 114 [2021-11-19 15:47:31,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:31,002 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:31,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:31,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-19 15:47:31,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2021-11-19 15:47:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.90990990990991) internal successors, (212), 111 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 212 transitions. [2021-11-19 15:47:31,008 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 212 transitions. Word has length 16 [2021-11-19 15:47:31,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:31,008 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 212 transitions. [2021-11-19 15:47:31,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:31,009 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 212 transitions. [2021-11-19 15:47:31,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 15:47:31,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:31,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:31,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 15:47:31,010 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:31,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:31,011 INFO L85 PathProgramCache]: Analyzing trace with hash -352452055, now seen corresponding path program 1 times [2021-11-19 15:47:31,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:31,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905760384] [2021-11-19 15:47:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:31,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:31,157 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:31,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905760384] [2021-11-19 15:47:31,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905760384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:31,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:31,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 15:47:31,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749361916] [2021-11-19 15:47:31,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:31,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:47:31,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:31,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:47:31,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:47:31,160 INFO L87 Difference]: Start difference. First operand 112 states and 212 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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) [2021-11-19 15:47:31,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:31,274 INFO L93 Difference]: Finished difference Result 97 states and 181 transitions. [2021-11-19 15:47:31,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:47:31,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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 [2021-11-19 15:47:31,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:31,275 INFO L225 Difference]: With dead ends: 97 [2021-11-19 15:47:31,275 INFO L226 Difference]: Without dead ends: 47 [2021-11-19 15:47:31,276 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 [2021-11-19 15:47:31,276 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 55 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:31,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 13 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:31,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-19 15:47:31,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-19 15:47:31,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.7391304347826086) internal successors, (80), 46 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 80 transitions. [2021-11-19 15:47:31,279 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 80 transitions. Word has length 17 [2021-11-19 15:47:31,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:31,280 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 80 transitions. [2021-11-19 15:47:31,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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) [2021-11-19 15:47:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 80 transitions. [2021-11-19 15:47:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 15:47:31,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:31,281 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] [2021-11-19 15:47:31,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 15:47:31,281 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:31,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:31,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1284907477, now seen corresponding path program 1 times [2021-11-19 15:47:31,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:31,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681399380] [2021-11-19 15:47:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:31,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:31,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:31,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681399380] [2021-11-19 15:47:31,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681399380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:31,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:31,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 15:47:31,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248661774] [2021-11-19 15:47:31,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:31,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:47:31,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:47:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:47:31,528 INFO L87 Difference]: Start difference. First operand 47 states and 80 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-11-19 15:47:31,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:31,724 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2021-11-19 15:47:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:47:31,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 [2021-11-19 15:47:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:31,725 INFO L225 Difference]: With dead ends: 72 [2021-11-19 15:47:31,725 INFO L226 Difference]: Without dead ends: 46 [2021-11-19 15:47:31,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:47:31,726 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 43 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:31,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 19 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:31,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-19 15:47:31,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2021-11-19 15:47:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2021-11-19 15:47:31,730 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 52 transitions. Word has length 20 [2021-11-19 15:47:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:31,730 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 52 transitions. [2021-11-19 15:47:31,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-11-19 15:47:31,731 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 52 transitions. [2021-11-19 15:47:31,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 15:47:31,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:31,731 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] [2021-11-19 15:47:31,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 15:47:31,732 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-19 15:47:31,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:31,733 INFO L85 PathProgramCache]: Analyzing trace with hash 994305771, now seen corresponding path program 2 times [2021-11-19 15:47:31,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:31,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781293590] [2021-11-19 15:47:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:31,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 15:47:31,773 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 15:47:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 15:47:31,857 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 15:47:31,858 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 15:47:31,859 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-19 15:47:31,861 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-19 15:47:31,861 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-11-19 15:47:31,862 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-11-19 15:47:31,862 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 6 remaining) [2021-11-19 15:47:31,862 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-19 15:47:31,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 15:47:31,865 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:31,870 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-19 15:47:31,870 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 15:47:31,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 03:47:31 BasicIcfg [2021-11-19 15:47:31,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 15:47:31,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 15:47:31,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 15:47:31,970 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 15:47:31,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:47:05" (3/4) ... [2021-11-19 15:47:31,973 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 15:47:32,102 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 15:47:32,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 15:47:32,103 INFO L158 Benchmark]: Toolchain (without parser) took 28380.36ms. Allocated memory was 98.6MB in the beginning and 234.9MB in the end (delta: 136.3MB). Free memory was 55.8MB in the beginning and 135.3MB in the end (delta: -79.5MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2021-11-19 15:47:32,104 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 98.6MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:47:32,104 INFO L158 Benchmark]: CACSL2BoogieTranslator took 710.52ms. Allocated memory is still 98.6MB. Free memory was 55.6MB in the beginning and 59.2MB in the end (delta: -3.6MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2021-11-19 15:47:32,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.62ms. Allocated memory is still 98.6MB. Free memory was 59.2MB in the beginning and 56.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:47:32,106 INFO L158 Benchmark]: Boogie Preprocessor took 84.80ms. Allocated memory is still 98.6MB. Free memory was 56.2MB in the beginning and 54.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:47:32,106 INFO L158 Benchmark]: RCFGBuilder took 1142.06ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 54.1MB in the beginning and 96.2MB in the end (delta: -42.1MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2021-11-19 15:47:32,107 INFO L158 Benchmark]: TraceAbstraction took 26197.32ms. Allocated memory was 125.8MB in the beginning and 234.9MB in the end (delta: 109.1MB). Free memory was 95.3MB in the beginning and 146.8MB in the end (delta: -51.5MB). Peak memory consumption was 57.2MB. Max. memory is 16.1GB. [2021-11-19 15:47:32,107 INFO L158 Benchmark]: Witness Printer took 133.61ms. Allocated memory is still 234.9MB. Free memory was 146.8MB in the beginning and 135.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 15:47:32,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 98.6MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 710.52ms. Allocated memory is still 98.6MB. Free memory was 55.6MB in the beginning and 59.2MB in the end (delta: -3.6MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.62ms. Allocated memory is still 98.6MB. Free memory was 59.2MB in the beginning and 56.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.80ms. Allocated memory is still 98.6MB. Free memory was 56.2MB in the beginning and 54.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1142.06ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 54.1MB in the beginning and 96.2MB in the end (delta: -42.1MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. * TraceAbstraction took 26197.32ms. Allocated memory was 125.8MB in the beginning and 234.9MB in the end (delta: 109.1MB). Free memory was 95.3MB in the beginning and 146.8MB in the end (delta: -51.5MB). Peak memory consumption was 57.2MB. Max. memory is 16.1GB. * Witness Printer took 133.61ms. Allocated memory is still 234.9MB. Free memory was 146.8MB in the beginning and 135.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.4s, 121 PlacesBefore, 35 PlacesAfterwards, 113 TransitionsBefore, 26 TransitionsAfterwards, 1944 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 100 TotalNumberOfCompositions, 4617 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2490, positive: 2343, positive conditional: 0, positive unconditional: 2343, negative: 147, negative conditional: 0, negative unconditional: 147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1400, positive: 1341, positive conditional: 0, positive unconditional: 1341, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1400, positive: 1327, positive conditional: 0, positive unconditional: 1327, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 73, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 953, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 899, negative conditional: 0, negative unconditional: 899, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2490, positive: 1002, positive conditional: 0, positive unconditional: 1002, negative: 88, negative conditional: 0, negative unconditional: 88, unknown: 1400, unknown conditional: 0, unknown unconditional: 1400] , Statistics on independence cache: Total cache size (in pairs): 107, Positive cache size: 91, Positive conditional cache size: 0, Positive unconditional cache size: 91, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - 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: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L712] 0 _Bool main$tmp_guard0; [L713] 0 _Bool main$tmp_guard1; [L715] 0 int x = 0; [L717] 0 int y = 0; [L718] 0 _Bool y$flush_delayed; [L719] 0 int y$mem_tmp; [L720] 0 _Bool y$r_buff0_thd0; [L721] 0 _Bool y$r_buff0_thd1; [L722] 0 _Bool y$r_buff0_thd2; [L723] 0 _Bool y$r_buff0_thd3; [L724] 0 _Bool y$r_buff1_thd0; [L725] 0 _Bool y$r_buff1_thd1; [L726] 0 _Bool y$r_buff1_thd2; [L727] 0 _Bool y$r_buff1_thd3; [L728] 0 _Bool y$read_delayed; [L729] 0 int *y$read_delayed_var; [L730] 0 int y$w_buff0; [L731] 0 _Bool y$w_buff0_used; [L732] 0 int y$w_buff1; [L733] 0 _Bool y$w_buff1_used; [L735] 0 int z = 0; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L813] 0 pthread_t t1492; [L814] FCALL, FORK 0 pthread_create(&t1492, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1492, ((void *)0), P0, ((void *)0))=-1, t1492={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L815] 0 pthread_t t1493; [L816] FCALL, FORK 0 pthread_create(&t1493, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1493, ((void *)0), P1, ((void *)0))=0, t1492={5:0}, t1493={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L817] 0 pthread_t t1494; [L818] FCALL, FORK 0 pthread_create(&t1494, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1494, ((void *)0), P2, ((void *)0))=1, t1492={5:0}, t1493={6:0}, t1494={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L776] 3 y$w_buff1 = y$w_buff0 [L777] 3 y$w_buff0 = 2 [L778] 3 y$w_buff1_used = y$w_buff0_used [L779] 3 y$w_buff0_used = (_Bool)1 [L780] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L780] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L781] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L782] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L783] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L784] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L785] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L788] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=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, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L741] 1 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=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, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L744] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=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, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L749] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L751] 1 return 0; [L756] 2 x = 2 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=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, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L759] 2 y = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=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, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L762] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L762] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L762] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L762] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L763] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L763] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L764] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L764] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L765] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L765] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L766] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L766] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L791] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L791] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L792] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L792] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L793] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L793] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L794] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L794] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L795] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L795] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L798] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L800] 3 return 0; [L769] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L771] 2 return 0; [L820] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L822] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L822] RET 0 assume_abort_if_not(main$tmp_guard0) [L824] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L824] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L824] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L824] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L825] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L825] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L826] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L826] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L827] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L827] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L828] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L828] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L831] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L832] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L833] 0 y$flush_delayed = weak$$choice2 [L834] 0 y$mem_tmp = y [L835] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L835] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L836] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L836] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L837] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L837] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L838] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L838] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L839] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L839] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L840] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L840] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L841] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L841] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L842] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0) [L843] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L843] 0 y = y$flush_delayed ? y$mem_tmp : y [L844] 0 y$flush_delayed = (_Bool)0 [L846] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=54, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] - 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: 816]: 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: 818]: 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: 814]: 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 7 procedures, 139 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 25.9s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 21.5s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 348 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 348 mSDsluCounter, 163 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 509 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 959 IncrementalHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 63 mSDtfsCounter, 959 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=570occurred in iteration=0, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 93 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 201 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 167 ConstructedInterpolants, 0 QuantifiedInterpolants, 1262 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 15:47:32,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5800b07-bfed-43d0-bc37-f3a993116795/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE