./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix044.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix044.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7 --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 bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:48:33,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:48:33,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:48:33,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:48:33,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:48:33,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:48:33,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:48:33,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:48:33,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:48:33,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:48:33,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:48:33,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:48:33,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:48:33,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:48:33,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:48:33,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:48:33,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:48:33,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:48:33,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:48:33,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:48:33,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:48:33,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:48:33,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:48:33,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:48:33,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:48:33,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:48:33,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:48:33,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:48:33,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:48:33,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:48:33,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:48:33,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:48:33,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:48:33,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:48:33,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:48:33,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:48:33,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:48:33,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:48:33,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:48:33,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:48:33,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:48:33,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 17:48:33,456 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:48:33,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:48:33,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:48:33,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:48:33,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:48:33,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:48:33,458 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:48:33,458 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:48:33,458 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:48:33,459 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:48:33,459 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:48:33,459 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:48:33,459 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:48:33,459 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:48:33,460 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:48:33,460 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:48:33,460 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:48:33,460 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:48:33,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:48:33,461 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:48:33,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:48:33,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:48:33,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:48:33,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:48:33,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:48:33,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:48:33,463 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:48:33,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:48:33,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:48:33,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:48:33,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:48:33,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:48:33,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:48:33,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:48:33,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:48:33,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:48:33,465 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:48:33,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:48:33,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:48:33,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:48:33,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:48:33,466 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_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb408c890b0d52a937687fd58d564d57121120b7f4647156375768e776a678b4 [2021-11-25 17:48:33,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:48:33,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:48:33,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:48:33,729 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:48:33,730 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:48:33,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/pthread-wmm/mix044.opt.i [2021-11-25 17:48:33,807 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/data/ceee262c5/e0eead37ac5a4f248f7757a0a2d24e98/FLAG1162e1818 [2021-11-25 17:48:34,346 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:48:34,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/sv-benchmarks/c/pthread-wmm/mix044.opt.i [2021-11-25 17:48:34,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/data/ceee262c5/e0eead37ac5a4f248f7757a0a2d24e98/FLAG1162e1818 [2021-11-25 17:48:34,650 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/data/ceee262c5/e0eead37ac5a4f248f7757a0a2d24e98 [2021-11-25 17:48:34,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:48:34,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:48:34,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:48:34,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:48:34,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:48:34,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:48:34" (1/1) ... [2021-11-25 17:48:34,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f28a6f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:34, skipping insertion in model container [2021-11-25 17:48:34,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:48:34" (1/1) ... [2021-11-25 17:48:34,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:48:34,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:48:34,928 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_69a32a40-71a5-4966-b6be-a91938b6dd97/sv-benchmarks/c/pthread-wmm/mix044.opt.i[944,957] [2021-11-25 17:48:35,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:48:35,210 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:48:35,223 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_69a32a40-71a5-4966-b6be-a91938b6dd97/sv-benchmarks/c/pthread-wmm/mix044.opt.i[944,957] [2021-11-25 17:48:35,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:48:35,346 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:48:35,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:35 WrapperNode [2021-11-25 17:48:35,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:48:35,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:48:35,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:48:35,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:48:35,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:35" (1/1) ... [2021-11-25 17:48:35,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:35" (1/1) ... [2021-11-25 17:48:35,454 INFO L137 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 298 [2021-11-25 17:48:35,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:48:35,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:48:35,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:48:35,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:48:35,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:35" (1/1) ... [2021-11-25 17:48:35,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:35" (1/1) ... [2021-11-25 17:48:35,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:35" (1/1) ... [2021-11-25 17:48:35,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:35" (1/1) ... [2021-11-25 17:48:35,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:35" (1/1) ... [2021-11-25 17:48:35,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:35" (1/1) ... [2021-11-25 17:48:35,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:35" (1/1) ... [2021-11-25 17:48:35,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:48:35,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:48:35,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:48:35,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:48:35,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:35" (1/1) ... [2021-11-25 17:48:35,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:48:35,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:48:35,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:48:35,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:48:35,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:48:35,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-25 17:48:35,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:48:35,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:48:35,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:48:35,643 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-25 17:48:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-25 17:48:35,643 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-25 17:48:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-25 17:48:35,643 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-25 17:48:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-25 17:48:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-11-25 17:48:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-11-25 17:48:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:48:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-25 17:48:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:48:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:48:35,646 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-25 17:48:35,786 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:48:35,788 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:48:36,418 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:48:36,766 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:48:36,767 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 17:48:36,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:48:36 BoogieIcfgContainer [2021-11-25 17:48:36,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:48:36,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:48:36,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:48:36,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:48:36,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:48:34" (1/3) ... [2021-11-25 17:48:36,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b04e52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:48:36, skipping insertion in model container [2021-11-25 17:48:36,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:48:35" (2/3) ... [2021-11-25 17:48:36,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b04e52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:48:36, skipping insertion in model container [2021-11-25 17:48:36,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:48:36" (3/3) ... [2021-11-25 17:48:36,778 INFO L111 eAbstractionObserver]: Analyzing ICFG mix044.opt.i [2021-11-25 17:48:36,784 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-25 17:48:36,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:48:36,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 17:48:36,784 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-25 17:48:36,826 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,826 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,826 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,826 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,827 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,827 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,827 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,827 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,828 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,828 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,828 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,828 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,829 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,829 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,829 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,829 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,830 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,830 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,830 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,830 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,831 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,831 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,831 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,831 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,832 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,832 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,832 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,832 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,833 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,833 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,833 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,833 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,834 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,834 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,834 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,834 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,834 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,835 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,835 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,835 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,836 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,836 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,836 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,836 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,836 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,837 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,837 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,837 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,838 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,838 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,838 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,839 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,839 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,839 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,839 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,840 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,840 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,840 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,840 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,840 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,841 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,841 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,841 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,841 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,842 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,842 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,842 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,843 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,843 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,843 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,843 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,844 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,844 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,844 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,845 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,845 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,845 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,845 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,845 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,846 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,846 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,846 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,847 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,847 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,850 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,850 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,851 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,851 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,852 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,852 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,852 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,853 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,853 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,853 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,853 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,854 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,854 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,854 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,855 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,855 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,855 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,856 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,856 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,857 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,857 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,857 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,857 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,857 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,858 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,858 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,858 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,858 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,859 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,859 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 17:48:36,859 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 17:48:36,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:48:36,913 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 [2021-11-25 17:48:36,914 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-25 17:48:36,928 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 17:48:36,942 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 137 transitions, 294 flow [2021-11-25 17:48:36,945 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 137 transitions, 294 flow [2021-11-25 17:48:36,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2021-11-25 17:48:37,007 INFO L129 PetriNetUnfolder]: 2/133 cut-off events. [2021-11-25 17:48:37,007 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-25 17:48:37,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-11-25 17:48:37,018 INFO L116 LiptonReduction]: Number of co-enabled transitions 3168 [2021-11-25 17:48:56,177 INFO L131 LiptonReduction]: Checked pairs total: 6552 [2021-11-25 17:48:56,177 INFO L133 LiptonReduction]: Total number of compositions: 114 [2021-11-25 17:48:56,185 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 32 transitions, 84 flow [2021-11-25 17:48:56,340 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2602 states, 2599 states have (on average 3.841477491342824) internal successors, (9984), 2601 states have internal predecessors, (9984), 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) [2021-11-25 17:48:56,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 2602 states, 2599 states have (on average 3.841477491342824) internal successors, (9984), 2601 states have internal predecessors, (9984), 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) [2021-11-25 17:48:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 17:48:56,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:56,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:48:56,361 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:48:56,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:56,366 INFO L85 PathProgramCache]: Analyzing trace with hash 2025843606, now seen corresponding path program 1 times [2021-11-25 17:48:56,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:56,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393900711] [2021-11-25 17:48:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:56,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:48:56,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:56,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393900711] [2021-11-25 17:48:56,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393900711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:56,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:56,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 17:48:56,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112782994] [2021-11-25 17:48:56,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:56,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:48:56,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:56,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:48:56,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:48:56,738 INFO L87 Difference]: Start difference. First operand has 2602 states, 2599 states have (on average 3.841477491342824) internal successors, (9984), 2601 states have internal predecessors, (9984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:48:56,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:56,919 INFO L93 Difference]: Finished difference Result 2202 states and 8344 transitions. [2021-11-25 17:48:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:48:56,922 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 [2021-11-25 17:48:56,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:56,981 INFO L225 Difference]: With dead ends: 2202 [2021-11-25 17:48:56,982 INFO L226 Difference]: Without dead ends: 2122 [2021-11-25 17:48:56,983 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 [2021-11-25 17:48:56,989 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:56,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:48:57,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-11-25 17:48:57,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2122. [2021-11-25 17:48:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 3.8095238095238093) internal successors, (8080), 2121 states have internal predecessors, (8080), 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) [2021-11-25 17:48:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 8080 transitions. [2021-11-25 17:48:57,216 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 8080 transitions. Word has length 9 [2021-11-25 17:48:57,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:57,217 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 8080 transitions. [2021-11-25 17:48:57,218 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) [2021-11-25 17:48:57,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 8080 transitions. [2021-11-25 17:48:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 17:48:57,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:57,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:48:57,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:48:57,221 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:48:57,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:57,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1215613815, now seen corresponding path program 1 times [2021-11-25 17:48:57,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:57,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535130463] [2021-11-25 17:48:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:57,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:57,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:48:57,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:57,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535130463] [2021-11-25 17:48:57,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535130463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:57,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:57,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:48:57,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526828296] [2021-11-25 17:48:57,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:57,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:48:57,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:57,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:48:57,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:48:57,460 INFO L87 Difference]: Start difference. First operand 2122 states and 8080 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) [2021-11-25 17:48:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:57,605 INFO L93 Difference]: Finished difference Result 2186 states and 8144 transitions. [2021-11-25 17:48:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:48:57,606 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 [2021-11-25 17:48:57,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:57,632 INFO L225 Difference]: With dead ends: 2186 [2021-11-25 17:48:57,633 INFO L226 Difference]: Without dead ends: 2186 [2021-11-25 17:48:57,634 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 [2021-11-25 17:48:57,637 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:57,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 13 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:48:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2021-11-25 17:48:57,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2186. [2021-11-25 17:48:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 2185 states have (on average 3.7272311212814646) internal successors, (8144), 2185 states have internal predecessors, (8144), 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) [2021-11-25 17:48:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 8144 transitions. [2021-11-25 17:48:57,757 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 8144 transitions. Word has length 11 [2021-11-25 17:48:57,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:57,757 INFO L470 AbstractCegarLoop]: Abstraction has 2186 states and 8144 transitions. [2021-11-25 17:48:57,758 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) [2021-11-25 17:48:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 8144 transitions. [2021-11-25 17:48:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 17:48:57,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:57,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:48:57,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:48:57,765 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:48:57,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:57,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1264159618, now seen corresponding path program 1 times [2021-11-25 17:48:57,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:57,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478514314] [2021-11-25 17:48:57,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:57,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:57,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:48:57,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:57,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478514314] [2021-11-25 17:48:57,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478514314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:57,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:57,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 17:48:57,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595845102] [2021-11-25 17:48:57,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:57,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:48:57,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:57,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:48:57,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:48:57,954 INFO L87 Difference]: Start difference. First operand 2186 states and 8144 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:48:58,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:58,092 INFO L93 Difference]: Finished difference Result 2154 states and 8004 transitions. [2021-11-25 17:48:58,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:48:58,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-25 17:48:58,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:58,121 INFO L225 Difference]: With dead ends: 2154 [2021-11-25 17:48:58,121 INFO L226 Difference]: Without dead ends: 2154 [2021-11-25 17:48:58,121 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 [2021-11-25 17:48:58,123 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:58,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 9 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:48:58,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2021-11-25 17:48:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2154. [2021-11-25 17:48:58,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 2153 states have (on average 3.717603344170924) internal successors, (8004), 2153 states have internal predecessors, (8004), 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) [2021-11-25 17:48:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 8004 transitions. [2021-11-25 17:48:58,222 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 8004 transitions. Word has length 15 [2021-11-25 17:48:58,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:58,222 INFO L470 AbstractCegarLoop]: Abstraction has 2154 states and 8004 transitions. [2021-11-25 17:48:58,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:48:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 8004 transitions. [2021-11-25 17:48:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 17:48:58,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:58,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:48:58,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:48:58,228 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:48:58,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:58,228 INFO L85 PathProgramCache]: Analyzing trace with hash -749709575, now seen corresponding path program 1 times [2021-11-25 17:48:58,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:58,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578854281] [2021-11-25 17:48:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:58,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:48:58,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:58,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578854281] [2021-11-25 17:48:58,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578854281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:58,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:58,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:48:58,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746337470] [2021-11-25 17:48:58,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:58,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:48:58,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:58,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:48:58,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:48:58,405 INFO L87 Difference]: Start difference. First operand 2154 states and 8004 transitions. Second operand has 5 states, 4 states have (on average 4.0) 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) [2021-11-25 17:48:58,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:58,564 INFO L93 Difference]: Finished difference Result 2126 states and 7894 transitions. [2021-11-25 17:48:58,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:48:58,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) 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 [2021-11-25 17:48:58,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:58,589 INFO L225 Difference]: With dead ends: 2126 [2021-11-25 17:48:58,590 INFO L226 Difference]: Without dead ends: 2126 [2021-11-25 17:48:58,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 17:48:58,596 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:58,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 17 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:48:58,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-11-25 17:48:58,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2126. [2021-11-25 17:48:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2125 states have (on average 3.7148235294117646) internal successors, (7894), 2125 states have internal predecessors, (7894), 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) [2021-11-25 17:48:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 7894 transitions. [2021-11-25 17:48:58,711 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 7894 transitions. Word has length 16 [2021-11-25 17:48:58,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:58,712 INFO L470 AbstractCegarLoop]: Abstraction has 2126 states and 7894 transitions. [2021-11-25 17:48:58,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) 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) [2021-11-25 17:48:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 7894 transitions. [2021-11-25 17:48:58,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 17:48:58,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:58,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:48:58,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 17:48:58,719 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:48:58,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:58,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1444378358, now seen corresponding path program 1 times [2021-11-25 17:48:58,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:58,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531366829] [2021-11-25 17:48:58,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:58,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:48:58,922 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:58,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531366829] [2021-11-25 17:48:58,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531366829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:58,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:58,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:48:58,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901245715] [2021-11-25 17:48:58,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:58,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:48:58,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:58,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:48:58,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:48:58,924 INFO L87 Difference]: Start difference. First operand 2126 states and 7894 transitions. Second operand has 4 states, 4 states have (on average 4.0) 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) [2021-11-25 17:48:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:59,067 INFO L93 Difference]: Finished difference Result 2246 states and 7613 transitions. [2021-11-25 17:48:59,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:48:59,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) 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 [2021-11-25 17:48:59,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:59,085 INFO L225 Difference]: With dead ends: 2246 [2021-11-25 17:48:59,085 INFO L226 Difference]: Without dead ends: 1670 [2021-11-25 17:48:59,086 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 [2021-11-25 17:48:59,087 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:59,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 25 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:48:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-11-25 17:48:59,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1670. [2021-11-25 17:48:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1669 states have (on average 3.3636908328340325) internal successors, (5614), 1669 states have internal predecessors, (5614), 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) [2021-11-25 17:48:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 5614 transitions. [2021-11-25 17:48:59,159 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 5614 transitions. Word has length 16 [2021-11-25 17:48:59,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:59,159 INFO L470 AbstractCegarLoop]: Abstraction has 1670 states and 5614 transitions. [2021-11-25 17:48:59,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) 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) [2021-11-25 17:48:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 5614 transitions. [2021-11-25 17:48:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 17:48:59,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:59,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:48:59,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 17:48:59,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:48:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1213340727, now seen corresponding path program 1 times [2021-11-25 17:48:59,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:59,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521137885] [2021-11-25 17:48:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:59,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:48:59,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:59,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521137885] [2021-11-25 17:48:59,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521137885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:59,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:59,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:48:59,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806128704] [2021-11-25 17:48:59,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:59,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:48:59,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:59,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:48:59,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:48:59,362 INFO L87 Difference]: Start difference. First operand 1670 states and 5614 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2021-11-25 17:48:59,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:59,525 INFO L93 Difference]: Finished difference Result 1462 states and 4516 transitions. [2021-11-25 17:48:59,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:48:59,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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 [2021-11-25 17:48:59,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:59,540 INFO L225 Difference]: With dead ends: 1462 [2021-11-25 17:48:59,540 INFO L226 Difference]: Without dead ends: 1093 [2021-11-25 17:48:59,541 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 [2021-11-25 17:48:59,545 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 62 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:59,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 35 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:48:59,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2021-11-25 17:48:59,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1093. [2021-11-25 17:48:59,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 3.0274725274725274) internal successors, (3306), 1092 states have internal predecessors, (3306), 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) [2021-11-25 17:48:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 3306 transitions. [2021-11-25 17:48:59,587 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 3306 transitions. Word has length 17 [2021-11-25 17:48:59,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:59,587 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 3306 transitions. [2021-11-25 17:48:59,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2021-11-25 17:48:59,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 3306 transitions. [2021-11-25 17:48:59,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 17:48:59,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:59,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:48:59,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 17:48:59,591 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:48:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:59,592 INFO L85 PathProgramCache]: Analyzing trace with hash 554280561, now seen corresponding path program 1 times [2021-11-25 17:48:59,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:59,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737926056] [2021-11-25 17:48:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:59,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:48:59,773 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:59,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737926056] [2021-11-25 17:48:59,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737926056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:59,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:59,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:48:59,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094469308] [2021-11-25 17:48:59,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:59,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 17:48:59,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:59,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 17:48:59,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 17:48:59,775 INFO L87 Difference]: Start difference. First operand 1093 states and 3306 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-25 17:48:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:59,930 INFO L93 Difference]: Finished difference Result 953 states and 2847 transitions. [2021-11-25 17:48:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:48:59,931 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2021-11-25 17:48:59,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:59,938 INFO L225 Difference]: With dead ends: 953 [2021-11-25 17:48:59,938 INFO L226 Difference]: Without dead ends: 830 [2021-11-25 17:48:59,938 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 [2021-11-25 17:48:59,939 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:59,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 40 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:48:59,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-11-25 17:48:59,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2021-11-25 17:48:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 3.0361881785283473) internal successors, (2517), 829 states have internal predecessors, (2517), 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) [2021-11-25 17:48:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 2517 transitions. [2021-11-25 17:48:59,967 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 2517 transitions. Word has length 19 [2021-11-25 17:48:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:59,968 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 2517 transitions. [2021-11-25 17:48:59,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-25 17:48:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 2517 transitions. [2021-11-25 17:48:59,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 17:48:59,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:59,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:48:59,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 17:48:59,971 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:48:59,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:59,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2023774137, now seen corresponding path program 1 times [2021-11-25 17:48:59,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:59,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525607187] [2021-11-25 17:48:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:59,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:49:00,079 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:00,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525607187] [2021-11-25 17:49:00,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525607187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:00,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:00,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:49:00,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116423159] [2021-11-25 17:49:00,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:00,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:49:00,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:00,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:49:00,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:49:00,086 INFO L87 Difference]: Start difference. First operand 830 states and 2517 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-25 17:49:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:00,274 INFO L93 Difference]: Finished difference Result 1063 states and 3158 transitions. [2021-11-25 17:49:00,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:00,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2021-11-25 17:49:00,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:00,280 INFO L225 Difference]: With dead ends: 1063 [2021-11-25 17:49:00,281 INFO L226 Difference]: Without dead ends: 707 [2021-11-25 17:49:00,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:49:00,282 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 55 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:00,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 31 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:49:00,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-11-25 17:49:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 704. [2021-11-25 17:49:00,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 2.869132290184922) internal successors, (2017), 703 states have internal predecessors, (2017), 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) [2021-11-25 17:49:00,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 2017 transitions. [2021-11-25 17:49:00,310 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 2017 transitions. Word has length 22 [2021-11-25 17:49:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:00,310 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 2017 transitions. [2021-11-25 17:49:00,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-11-25 17:49:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 2017 transitions. [2021-11-25 17:49:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 17:49:00,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:00,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:49:00,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 17:49:00,314 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:49:00,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:00,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1188229731, now seen corresponding path program 2 times [2021-11-25 17:49:00,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:00,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707537317] [2021-11-25 17:49:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:00,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:49:00,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:00,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707537317] [2021-11-25 17:49:00,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707537317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:00,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:00,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:49:00,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068696989] [2021-11-25 17:49:00,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:00,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:49:00,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:00,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:49:00,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:49:00,464 INFO L87 Difference]: Start difference. First operand 704 states and 2017 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-25 17:49:00,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:00,574 INFO L93 Difference]: Finished difference Result 959 states and 2660 transitions. [2021-11-25 17:49:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:49:00,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2021-11-25 17:49:00,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:00,580 INFO L225 Difference]: With dead ends: 959 [2021-11-25 17:49:00,580 INFO L226 Difference]: Without dead ends: 642 [2021-11-25 17:49:00,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:49:00,581 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:00,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 19 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:49:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-11-25 17:49:00,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 616. [2021-11-25 17:49:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 2.6422764227642275) internal successors, (1625), 615 states have internal predecessors, (1625), 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) [2021-11-25 17:49:00,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1625 transitions. [2021-11-25 17:49:00,602 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1625 transitions. Word has length 22 [2021-11-25 17:49:00,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:00,603 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 1625 transitions. [2021-11-25 17:49:00,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-25 17:49:00,603 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1625 transitions. [2021-11-25 17:49:00,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 17:49:00,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:00,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:49:00,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 17:49:00,605 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:49:00,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:00,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1483962205, now seen corresponding path program 3 times [2021-11-25 17:49:00,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:00,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634005614] [2021-11-25 17:49:00,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:00,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:49:00,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:00,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634005614] [2021-11-25 17:49:00,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634005614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:00,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:00,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:00,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370409926] [2021-11-25 17:49:00,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:00,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:49:00,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:00,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:49:00,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:49:00,769 INFO L87 Difference]: Start difference. First operand 616 states and 1625 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-25 17:49:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:00,934 INFO L93 Difference]: Finished difference Result 590 states and 1573 transitions. [2021-11-25 17:49:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:49:00,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2021-11-25 17:49:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:00,937 INFO L225 Difference]: With dead ends: 590 [2021-11-25 17:49:00,937 INFO L226 Difference]: Without dead ends: 208 [2021-11-25 17:49:00,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:49:00,938 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 89 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:00,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 32 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:49:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-25 17:49:00,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 184. [2021-11-25 17:49:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.480874316939891) internal successors, (454), 183 states have internal predecessors, (454), 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) [2021-11-25 17:49:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 454 transitions. [2021-11-25 17:49:00,945 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 454 transitions. Word has length 22 [2021-11-25 17:49:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:00,945 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 454 transitions. [2021-11-25 17:49:00,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-25 17:49:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 454 transitions. [2021-11-25 17:49:00,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 17:49:00,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:00,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:49:00,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 17:49:00,948 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:49:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1959492556, now seen corresponding path program 1 times [2021-11-25 17:49:00,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:00,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730801176] [2021-11-25 17:49:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:00,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:49:01,081 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:01,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730801176] [2021-11-25 17:49:01,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730801176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:01,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:01,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:49:01,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632861391] [2021-11-25 17:49:01,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:01,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 17:49:01,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:01,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 17:49:01,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 17:49:01,084 INFO L87 Difference]: Start difference. First operand 184 states and 454 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-25 17:49:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:01,261 INFO L93 Difference]: Finished difference Result 234 states and 572 transitions. [2021-11-25 17:49:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:01,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2021-11-25 17:49:01,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:01,262 INFO L225 Difference]: With dead ends: 234 [2021-11-25 17:49:01,263 INFO L226 Difference]: Without dead ends: 92 [2021-11-25 17:49:01,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:49:01,263 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 45 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:01,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 29 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:49:01,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-25 17:49:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-25 17:49:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.1758241758241756) internal successors, (198), 91 states have internal predecessors, (198), 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) [2021-11-25 17:49:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 198 transitions. [2021-11-25 17:49:01,267 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 198 transitions. Word has length 26 [2021-11-25 17:49:01,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:01,267 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 198 transitions. [2021-11-25 17:49:01,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-25 17:49:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 198 transitions. [2021-11-25 17:49:01,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 17:49:01,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:01,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:49:01,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 17:49:01,269 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:49:01,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:01,269 INFO L85 PathProgramCache]: Analyzing trace with hash 751775604, now seen corresponding path program 2 times [2021-11-25 17:49:01,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:01,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822360211] [2021-11-25 17:49:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:01,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:49:01,703 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:01,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822360211] [2021-11-25 17:49:01,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822360211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:01,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:49:01,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:49:01,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933264190] [2021-11-25 17:49:01,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:01,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:49:01,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:01,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:49:01,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:49:01,705 INFO L87 Difference]: Start difference. First operand 92 states and 198 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-11-25 17:49:01,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:01,917 INFO L93 Difference]: Finished difference Result 118 states and 252 transitions. [2021-11-25 17:49:01,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:49:01,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 26 [2021-11-25 17:49:01,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:01,919 INFO L225 Difference]: With dead ends: 118 [2021-11-25 17:49:01,919 INFO L226 Difference]: Without dead ends: 64 [2021-11-25 17:49:01,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:49:01,920 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 38 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:01,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 25 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:49:01,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-25 17:49:01,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-25 17:49:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.9365079365079365) internal successors, (122), 63 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:49:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 122 transitions. [2021-11-25 17:49:01,923 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 122 transitions. Word has length 26 [2021-11-25 17:49:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:01,923 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 122 transitions. [2021-11-25 17:49:01,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-11-25 17:49:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 122 transitions. [2021-11-25 17:49:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 17:49:01,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:01,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:49:01,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 17:49:01,924 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-25 17:49:01,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:01,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1490567244, now seen corresponding path program 3 times [2021-11-25 17:49:01,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:01,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365879730] [2021-11-25 17:49:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:01,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:49:01,998 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 17:49:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 17:49:02,108 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 17:49:02,109 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 17:49:02,109 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-25 17:49:02,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-25 17:49:02,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 7 remaining) [2021-11-25 17:49:02,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 7 remaining) [2021-11-25 17:49:02,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 7 remaining) [2021-11-25 17:49:02,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION (1 of 7 remaining) [2021-11-25 17:49:02,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-25 17:49:02,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 17:49:02,115 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:49:02,119 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-25 17:49:02,119 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 17:49:02,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:49:02 BasicIcfg [2021-11-25 17:49:02,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 17:49:02,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 17:49:02,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 17:49:02,253 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 17:49:02,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:48:36" (3/4) ... [2021-11-25 17:49:02,255 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 17:49:02,399 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 17:49:02,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 17:49:02,400 INFO L158 Benchmark]: Toolchain (without parser) took 27746.15ms. Allocated memory was 146.8MB in the beginning and 253.8MB in the end (delta: 107.0MB). Free memory was 102.2MB in the beginning and 76.1MB in the end (delta: 26.1MB). Peak memory consumption was 132.3MB. Max. memory is 16.1GB. [2021-11-25 17:49:02,400 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 146.8MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 17:49:02,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 693.74ms. Allocated memory is still 146.8MB. Free memory was 102.0MB in the beginning and 106.5MB in the end (delta: -4.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 17:49:02,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.96ms. Allocated memory is still 146.8MB. Free memory was 106.5MB in the beginning and 103.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 17:49:02,401 INFO L158 Benchmark]: Boogie Preprocessor took 67.21ms. Allocated memory is still 146.8MB. Free memory was 103.7MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 17:49:02,402 INFO L158 Benchmark]: RCFGBuilder took 1243.08ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 101.6MB in the beginning and 165.4MB in the end (delta: -63.8MB). Peak memory consumption was 65.6MB. Max. memory is 16.1GB. [2021-11-25 17:49:02,402 INFO L158 Benchmark]: TraceAbstraction took 25480.83ms. Allocated memory was 207.6MB in the beginning and 253.8MB in the end (delta: 46.1MB). Free memory was 165.4MB in the beginning and 93.9MB in the end (delta: 71.5MB). Peak memory consumption was 118.7MB. Max. memory is 16.1GB. [2021-11-25 17:49:02,403 INFO L158 Benchmark]: Witness Printer took 146.91ms. Allocated memory is still 253.8MB. Free memory was 93.9MB in the beginning and 76.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-25 17:49:02,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 146.8MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 693.74ms. Allocated memory is still 146.8MB. Free memory was 102.0MB in the beginning and 106.5MB in the end (delta: -4.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.96ms. Allocated memory is still 146.8MB. Free memory was 106.5MB in the beginning and 103.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.21ms. Allocated memory is still 146.8MB. Free memory was 103.7MB in the beginning and 101.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1243.08ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 101.6MB in the beginning and 165.4MB in the end (delta: -63.8MB). Peak memory consumption was 65.6MB. Max. memory is 16.1GB. * TraceAbstraction took 25480.83ms. Allocated memory was 207.6MB in the beginning and 253.8MB in the end (delta: 46.1MB). Free memory was 165.4MB in the beginning and 93.9MB in the end (delta: 71.5MB). Peak memory consumption was 118.7MB. Max. memory is 16.1GB. * Witness Printer took 146.91ms. Allocated memory is still 253.8MB. Free memory was 93.9MB in the beginning and 76.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.2s, 148 PlacesBefore, 45 PlacesAfterwards, 137 TransitionsBefore, 32 TransitionsAfterwards, 3168 CoEnabledTransitionPairs, 6 FixpointIterations, 46 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 114 TotalNumberOfCompositions, 6552 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3129, positive: 2959, positive conditional: 0, positive unconditional: 2959, negative: 170, negative conditional: 0, negative unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1999, positive: 1913, positive conditional: 0, positive unconditional: 1913, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1999, positive: 1898, positive conditional: 0, positive unconditional: 1898, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 101, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1245, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 1172, negative conditional: 0, negative unconditional: 1172, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3129, positive: 1046, positive conditional: 0, positive unconditional: 1046, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 1999, unknown conditional: 0, unknown unconditional: 1999] , Statistics on independence cache: Total cache size (in pairs): 190, Positive cache size: 167, Positive conditional cache size: 0, Positive unconditional cache size: 167, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int __unbuffered_p3_EBX = 0; [L718] 0 int a = 0; [L720] 0 int b = 0; [L721] 0 _Bool main$tmp_guard0; [L722] 0 _Bool main$tmp_guard1; [L724] 0 int x = 0; [L726] 0 int y = 0; [L728] 0 int z = 0; [L729] 0 _Bool z$flush_delayed; [L730] 0 int z$mem_tmp; [L731] 0 _Bool z$r_buff0_thd0; [L732] 0 _Bool z$r_buff0_thd1; [L733] 0 _Bool z$r_buff0_thd2; [L734] 0 _Bool z$r_buff0_thd3; [L735] 0 _Bool z$r_buff0_thd4; [L736] 0 _Bool z$r_buff1_thd0; [L737] 0 _Bool z$r_buff1_thd1; [L738] 0 _Bool z$r_buff1_thd2; [L739] 0 _Bool z$r_buff1_thd3; [L740] 0 _Bool z$r_buff1_thd4; [L741] 0 _Bool z$read_delayed; [L742] 0 int *z$read_delayed_var; [L743] 0 int z$w_buff0; [L744] 0 _Bool z$w_buff0_used; [L745] 0 int z$w_buff1; [L746] 0 _Bool z$w_buff1_used; [L747] 0 _Bool weak$$choice0; [L748] 0 _Bool weak$$choice2; [L846] 0 pthread_t t1165; [L847] FCALL, FORK 0 pthread_create(&t1165, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1165, ((void *)0), P0, ((void *)0))=-2, t1165={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L848] 0 pthread_t t1166; [L849] FCALL, FORK 0 pthread_create(&t1166, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1166, ((void *)0), P1, ((void *)0))=-1, t1165={5:0}, t1166={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L850] 0 pthread_t t1167; [L851] FCALL, FORK 0 pthread_create(&t1167, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1167, ((void *)0), P2, ((void *)0))=0, t1165={5:0}, t1166={6:0}, t1167={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L852] 0 pthread_t t1168; [L853] FCALL, FORK 0 pthread_create(&t1168, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1168, ((void *)0), P3, ((void *)0))=1, t1165={5:0}, t1166={6:0}, t1167={7:0}, t1168={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L802] 4 z$w_buff1 = z$w_buff0 [L803] 4 z$w_buff0 = 2 [L804] 4 z$w_buff1_used = z$w_buff0_used [L805] 4 z$w_buff0_used = (_Bool)1 [L806] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L806] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L807] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L808] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L809] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L810] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L811] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L812] 4 z$r_buff0_thd4 = (_Bool)1 [L815] 4 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L818] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L821] 4 __unbuffered_p3_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L752] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L755] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L767] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L770] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L782] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L785] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L824] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L824] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L825] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L825] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L826] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L826] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L827] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L827] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L828] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L828] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L831] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L833] 4 return 0; [L788] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L788] EXPR 3 z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z [L788] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L788] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L789] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L789] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L790] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L790] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L791] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L791] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L792] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L792] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L795] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L797] 3 return 0; [L760] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L762] 1 return 0; [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L855] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L857] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L857] RET 0 assume_abort_if_not(main$tmp_guard0) [L859] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L859] EXPR 0 z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z [L859] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L859] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L860] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L860] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L861] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L861] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L862] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L862] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L863] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L863] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L866] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L867] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L868] 0 z$flush_delayed = weak$$choice2 [L869] 0 z$mem_tmp = z [L870] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L870] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L871] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L871] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L872] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L872] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L873] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L873] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L874] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L874] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L875] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L876] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L876] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L877] 0 main$tmp_guard1 = !(x == 2 && z == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L878] EXPR 0 z$flush_delayed ? z$mem_tmp : z [L878] 0 z = z$flush_delayed ? z$mem_tmp : z [L879] 0 z$flush_delayed = (_Bool)0 [L881] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=1, x=2, y=1, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 853]: 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: 849]: 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: 847]: 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: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 173 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 25.2s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 19.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 537 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 537 mSDsluCounter, 285 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 671 mSDsCounter, 102 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1103 IncrementalHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 102 mSolverCounterUnsat, 93 mSDtfsCounter, 1103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2602occurred in iteration=0, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 53 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 247 NumberOfCodeBlocks, 247 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 1465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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! [2021-11-25 17:49:02,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69a32a40-71a5-4966-b6be-a91938b6dd97/bin/utaipan-eEHZpOm5b7/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