./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1924d97c04cfa5367e34b409aac63a4fd986c243eb4aa0af30578d8598fbdf71 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:51:33,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:51:33,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:51:33,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:51:33,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:51:33,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:51:33,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:51:33,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:51:33,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:51:33,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:51:33,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:51:33,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:51:33,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:51:33,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:51:33,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:51:33,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:51:33,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:51:33,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:51:33,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:51:33,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:51:33,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:51:33,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:51:33,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:51:33,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:51:33,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:51:33,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:51:33,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:51:33,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:51:33,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:51:33,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:51:33,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:51:33,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:51:33,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:51:33,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:51:33,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:51:33,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:51:33,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:51:33,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:51:33,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:51:33,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:51:33,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:51:33,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 01:51:33,534 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:51:33,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:51:33,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:51:33,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:51:33,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:51:33,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:51:33,544 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:51:33,545 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:51:33,545 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:51:33,545 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:51:33,547 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:51:33,547 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:51:33,547 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:51:33,548 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:51:33,548 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:51:33,548 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:51:33,548 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:51:33,549 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:51:33,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:51:33,550 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:51:33,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:51:33,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:51:33,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:51:33,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:51:33,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:51:33,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:51:33,554 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:51:33,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:51:33,554 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:51:33,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:51:33,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:51:33,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:51:33,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:51:33,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:51:33,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:51:33,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:51:33,557 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:51:33,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:51:33,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:51:33,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:51:33,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:51:33,558 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_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1924d97c04cfa5367e34b409aac63a4fd986c243eb4aa0af30578d8598fbdf71 [2021-11-23 01:51:33,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:51:33,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:51:33,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:51:33,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:51:33,855 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:51:33,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2021-11-23 01:51:33,967 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/data/783507830/cb2f12feb6cc4916900b06297ef0e37b/FLAGc85e02187 [2021-11-23 01:51:34,504 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:51:34,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2021-11-23 01:51:34,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/data/783507830/cb2f12feb6cc4916900b06297ef0e37b/FLAGc85e02187 [2021-11-23 01:51:34,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/data/783507830/cb2f12feb6cc4916900b06297ef0e37b [2021-11-23 01:51:34,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:51:34,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:51:34,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:51:34,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:51:34,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:51:34,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:34" (1/1) ... [2021-11-23 01:51:34,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78441ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:34, skipping insertion in model container [2021-11-23 01:51:34,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:34" (1/1) ... [2021-11-23 01:51:34,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:51:34,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:51:35,097 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_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2021-11-23 01:51:35,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:51:35,197 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:51:35,210 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_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2021-11-23 01:51:35,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:51:35,262 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:51:35,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:35 WrapperNode [2021-11-23 01:51:35,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:51:35,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:51:35,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:51:35,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:51:35,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:35" (1/1) ... [2021-11-23 01:51:35,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:35" (1/1) ... [2021-11-23 01:51:35,312 INFO L137 Inliner]: procedures = 24, calls = 22, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 202 [2021-11-23 01:51:35,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:51:35,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:51:35,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:51:35,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:51:35,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:35" (1/1) ... [2021-11-23 01:51:35,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:35" (1/1) ... [2021-11-23 01:51:35,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:35" (1/1) ... [2021-11-23 01:51:35,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:35" (1/1) ... [2021-11-23 01:51:35,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:35" (1/1) ... [2021-11-23 01:51:35,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:35" (1/1) ... [2021-11-23 01:51:35,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:35" (1/1) ... [2021-11-23 01:51:35,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:51:35,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:51:35,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:51:35,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:51:35,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:35" (1/1) ... [2021-11-23 01:51:35,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:51:35,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:51:35,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:51:35,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:51:35,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:51:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-23 01:51:35,437 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-23 01:51:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:51:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-23 01:51:35,438 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-23 01:51:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-11-23 01:51:35,438 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-11-23 01:51:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:51:35,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:51:35,553 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:51:35,555 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:51:35,892 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:51:35,977 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:51:35,977 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 01:51:35,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:35 BoogieIcfgContainer [2021-11-23 01:51:35,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:51:35,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:51:35,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:51:35,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:51:35,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:51:34" (1/3) ... [2021-11-23 01:51:35,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe04ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:51:35, skipping insertion in model container [2021-11-23 01:51:35,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:35" (2/3) ... [2021-11-23 01:51:35,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe04ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:51:35, skipping insertion in model container [2021-11-23 01:51:35,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:35" (3/3) ... [2021-11-23 01:51:35,995 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2021-11-23 01:51:36,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:51:36,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 01:51:36,062 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:51:36,081 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:51:36,082 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 01:51:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 40 states have (on average 1.575) internal successors, (63), 43 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 01:51:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 01:51:36,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:36,114 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, 1] [2021-11-23 01:51:36,115 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:51:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:36,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1268551181, now seen corresponding path program 1 times [2021-11-23 01:51:36,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:36,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115978598] [2021-11-23 01:51:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:36,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:36,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:36,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:36,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115978598] [2021-11-23 01:51:36,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115978598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:36,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:36,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:51:36,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733417190] [2021-11-23 01:51:36,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:36,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:51:36,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:51:36,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:51:36,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:36,420 INFO L87 Difference]: Start difference. First operand has 51 states, 40 states have (on average 1.575) internal successors, (63), 43 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:51:36,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:36,538 INFO L93 Difference]: Finished difference Result 140 states and 208 transitions. [2021-11-23 01:51:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:51:36,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-11-23 01:51:36,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:36,557 INFO L225 Difference]: With dead ends: 140 [2021-11-23 01:51:36,557 INFO L226 Difference]: Without dead ends: 86 [2021-11-23 01:51:36,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:36,565 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 47 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:36,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 128 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:51:36,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-23 01:51:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2021-11-23 01:51:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 69 states have internal predecessors, (97), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-23 01:51:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 113 transitions. [2021-11-23 01:51:36,618 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 113 transitions. Word has length 27 [2021-11-23 01:51:36,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:36,619 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 113 transitions. [2021-11-23 01:51:36,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:51:36,619 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 113 transitions. [2021-11-23 01:51:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 01:51:36,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:36,622 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, 1, 1] [2021-11-23 01:51:36,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:51:36,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:51:36,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1853077635, now seen corresponding path program 1 times [2021-11-23 01:51:36,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:36,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319482363] [2021-11-23 01:51:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:36,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:36,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:36,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319482363] [2021-11-23 01:51:36,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319482363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:36,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:36,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:51:36,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390974685] [2021-11-23 01:51:36,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:36,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:51:36,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:51:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:51:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:36,689 INFO L87 Difference]: Start difference. First operand 82 states and 113 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:51:36,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:36,749 INFO L93 Difference]: Finished difference Result 238 states and 330 transitions. [2021-11-23 01:51:36,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:51:36,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2021-11-23 01:51:36,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:36,753 INFO L225 Difference]: With dead ends: 238 [2021-11-23 01:51:36,754 INFO L226 Difference]: Without dead ends: 157 [2021-11-23 01:51:36,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:36,757 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 48 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:36,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 114 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:51:36,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-23 01:51:36,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2021-11-23 01:51:36,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 128 states have (on average 1.390625) internal successors, (178), 129 states have internal predecessors, (178), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 01:51:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 208 transitions. [2021-11-23 01:51:36,788 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 208 transitions. Word has length 28 [2021-11-23 01:51:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:36,789 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 208 transitions. [2021-11-23 01:51:36,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:51:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 208 transitions. [2021-11-23 01:51:36,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 01:51:36,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:36,792 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, 1, 1, 1] [2021-11-23 01:51:36,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:51:36,792 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:51:36,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:36,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1269386223, now seen corresponding path program 1 times [2021-11-23 01:51:36,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:36,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928461489] [2021-11-23 01:51:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:36,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:36,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:36,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928461489] [2021-11-23 01:51:36,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928461489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:36,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:36,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:51:36,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020003108] [2021-11-23 01:51:36,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:36,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:51:36,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:51:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:51:36,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:36,903 INFO L87 Difference]: Start difference. First operand 153 states and 208 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:51:36,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:36,976 INFO L93 Difference]: Finished difference Result 393 states and 536 transitions. [2021-11-23 01:51:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:51:36,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-11-23 01:51:36,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:36,982 INFO L225 Difference]: With dead ends: 393 [2021-11-23 01:51:36,982 INFO L226 Difference]: Without dead ends: 241 [2021-11-23 01:51:36,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:36,985 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 46 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:36,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 113 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:51:36,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-23 01:51:37,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 227. [2021-11-23 01:51:37,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 191 states have (on average 1.3769633507853403) internal successors, (263), 194 states have internal predecessors, (263), 22 states have call successors, (22), 14 states have call predecessors, (22), 13 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-23 01:51:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 305 transitions. [2021-11-23 01:51:37,039 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 305 transitions. Word has length 29 [2021-11-23 01:51:37,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:37,039 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 305 transitions. [2021-11-23 01:51:37,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:51:37,040 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 305 transitions. [2021-11-23 01:51:37,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 01:51:37,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:37,043 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:37,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:51:37,043 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:51:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:37,044 INFO L85 PathProgramCache]: Analyzing trace with hash -825438797, now seen corresponding path program 1 times [2021-11-23 01:51:37,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:37,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425144019] [2021-11-23 01:51:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:37,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 01:51:37,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:37,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425144019] [2021-11-23 01:51:37,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425144019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:37,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:37,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:51:37,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689710318] [2021-11-23 01:51:37,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:37,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:51:37,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:51:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:51:37,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:37,159 INFO L87 Difference]: Start difference. First operand 227 states and 305 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 01:51:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:37,214 INFO L93 Difference]: Finished difference Result 390 states and 523 transitions. [2021-11-23 01:51:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:51:37,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2021-11-23 01:51:37,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:37,219 INFO L225 Difference]: With dead ends: 390 [2021-11-23 01:51:37,219 INFO L226 Difference]: Without dead ends: 232 [2021-11-23 01:51:37,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:37,227 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 32 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:37,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 145 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:51:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-23 01:51:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 221. [2021-11-23 01:51:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 185 states have (on average 1.345945945945946) internal successors, (249), 188 states have internal predecessors, (249), 22 states have call successors, (22), 14 states have call predecessors, (22), 13 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-23 01:51:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 291 transitions. [2021-11-23 01:51:37,271 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 291 transitions. Word has length 42 [2021-11-23 01:51:37,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:37,271 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 291 transitions. [2021-11-23 01:51:37,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 01:51:37,272 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 291 transitions. [2021-11-23 01:51:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 01:51:37,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:37,275 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:37,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:51:37,275 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:51:37,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:37,276 INFO L85 PathProgramCache]: Analyzing trace with hash -858400330, now seen corresponding path program 1 times [2021-11-23 01:51:37,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:37,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263619011] [2021-11-23 01:51:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:37,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 01:51:37,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:37,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263619011] [2021-11-23 01:51:37,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263619011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:37,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:37,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:51:37,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297489390] [2021-11-23 01:51:37,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:37,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:51:37,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:51:37,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:51:37,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:37,365 INFO L87 Difference]: Start difference. First operand 221 states and 291 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 01:51:37,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:37,458 INFO L93 Difference]: Finished difference Result 470 states and 615 transitions. [2021-11-23 01:51:37,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:51:37,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2021-11-23 01:51:37,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:37,462 INFO L225 Difference]: With dead ends: 470 [2021-11-23 01:51:37,462 INFO L226 Difference]: Without dead ends: 267 [2021-11-23 01:51:37,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:37,466 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 34 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:37,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 112 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:51:37,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-23 01:51:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-11-23 01:51:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 224 states have (on average 1.3035714285714286) internal successors, (292), 227 states have internal predecessors, (292), 26 states have call successors, (26), 17 states have call predecessors, (26), 16 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-23 01:51:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 342 transitions. [2021-11-23 01:51:37,530 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 342 transitions. Word has length 45 [2021-11-23 01:51:37,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:37,530 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 342 transitions. [2021-11-23 01:51:37,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 01:51:37,534 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 342 transitions. [2021-11-23 01:51:37,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 01:51:37,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:37,543 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:37,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:51:37,544 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:51:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash 617778564, now seen corresponding path program 1 times [2021-11-23 01:51:37,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:37,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981465841] [2021-11-23 01:51:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:37,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 01:51:37,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:37,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981465841] [2021-11-23 01:51:37,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981465841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:37,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:37,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 01:51:37,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384271984] [2021-11-23 01:51:37,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:37,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:51:37,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:51:37,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:51:37,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:51:37,691 INFO L87 Difference]: Start difference. First operand 267 states and 342 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 01:51:37,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:37,817 INFO L93 Difference]: Finished difference Result 307 states and 389 transitions. [2021-11-23 01:51:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 01:51:37,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 46 [2021-11-23 01:51:37,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:37,821 INFO L225 Difference]: With dead ends: 307 [2021-11-23 01:51:37,821 INFO L226 Difference]: Without dead ends: 304 [2021-11-23 01:51:37,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:51:37,824 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 114 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:37,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 110 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:51:37,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-23 01:51:37,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 266. [2021-11-23 01:51:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 224 states have (on average 1.2946428571428572) internal successors, (290), 226 states have internal predecessors, (290), 25 states have call successors, (25), 17 states have call predecessors, (25), 16 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-23 01:51:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 339 transitions. [2021-11-23 01:51:37,855 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 339 transitions. Word has length 46 [2021-11-23 01:51:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:37,855 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 339 transitions. [2021-11-23 01:51:37,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 01:51:37,856 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 339 transitions. [2021-11-23 01:51:37,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 01:51:37,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:37,874 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:37,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:51:37,874 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:51:37,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1970942969, now seen corresponding path program 1 times [2021-11-23 01:51:37,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:37,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81681154] [2021-11-23 01:51:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:37,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 01:51:38,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:38,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81681154] [2021-11-23 01:51:38,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81681154] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:51:38,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132433707] [2021-11-23 01:51:38,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:38,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:51:38,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:51:38,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:51:38,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:51:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:38,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 01:51:38,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:51:38,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 01:51:38,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132433707] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:51:38,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1343489134] [2021-11-23 01:51:38,813 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-23 01:51:38,813 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:51:38,819 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:51:38,825 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:51:38,826 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:51:40,791 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 66 for LOIs [2021-11-23 01:51:40,802 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify_threads with input of size 147 for LOIs [2021-11-23 01:51:41,545 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:51:47,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1343489134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:47,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:51:47,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2021-11-23 01:51:47,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991413472] [2021-11-23 01:51:47,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:47,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 01:51:47,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:51:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 01:51:47,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2021-11-23 01:51:47,895 INFO L87 Difference]: Start difference. First operand 266 states and 339 transitions. Second operand has 26 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 01:51:51,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:51,486 INFO L93 Difference]: Finished difference Result 572 states and 729 transitions. [2021-11-23 01:51:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-23 01:51:51,487 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2021-11-23 01:51:51,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:51,493 INFO L225 Difference]: With dead ends: 572 [2021-11-23 01:51:51,493 INFO L226 Difference]: Without dead ends: 307 [2021-11-23 01:51:51,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 106 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 01:51:51,504 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 46 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:51,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 432 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 01:51:51,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-23 01:51:51,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 294. [2021-11-23 01:51:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 249 states have (on average 1.2690763052208835) internal successors, (316), 251 states have internal predecessors, (316), 26 states have call successors, (26), 19 states have call predecessors, (26), 18 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-23 01:51:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 367 transitions. [2021-11-23 01:51:51,564 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 367 transitions. Word has length 47 [2021-11-23 01:51:51,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:51,567 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 367 transitions. [2021-11-23 01:51:51,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 01:51:51,567 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 367 transitions. [2021-11-23 01:51:51,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 01:51:51,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:51,576 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:51,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 01:51:51,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:51:51,794 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:51:51,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:51,795 INFO L85 PathProgramCache]: Analyzing trace with hash -473088383, now seen corresponding path program 1 times [2021-11-23 01:51:51,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:51,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809306697] [2021-11-23 01:51:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:51,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 01:51:51,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:51,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809306697] [2021-11-23 01:51:51,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809306697] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:51:51,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557709947] [2021-11-23 01:51:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:51,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:51:51,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:51:51,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:51:51,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 01:51:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:52,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 01:51:52,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:51:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 01:51:52,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:51:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 01:51:52,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557709947] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:51:52,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [928163938] [2021-11-23 01:51:52,657 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-23 01:51:52,657 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:51:52,657 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:51:52,658 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:51:52,658 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:51:55,372 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 49 for LOIs [2021-11-23 01:51:55,385 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify_threads with input of size 147 for LOIs [2021-11-23 01:51:56,058 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:52:03,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [928163938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:03,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:52:03,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [5, 4, 4] total 36 [2021-11-23 01:52:03,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051867494] [2021-11-23 01:52:03,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:03,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-23 01:52:03,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-23 01:52:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1102, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 01:52:03,870 INFO L87 Difference]: Start difference. First operand 294 states and 367 transitions. Second operand has 28 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 01:52:10,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:10,507 INFO L93 Difference]: Finished difference Result 548 states and 695 transitions. [2021-11-23 01:52:10,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-23 01:52:10,508 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2021-11-23 01:52:10,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:10,511 INFO L225 Difference]: With dead ends: 548 [2021-11-23 01:52:10,512 INFO L226 Difference]: Without dead ends: 320 [2021-11-23 01:52:10,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 128 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 01:52:10,515 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 81 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:10,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 592 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 01:52:10,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-11-23 01:52:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 249. [2021-11-23 01:52:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 211 states have (on average 1.2654028436018958) internal successors, (267), 213 states have internal predecessors, (267), 22 states have call successors, (22), 16 states have call predecessors, (22), 15 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-23 01:52:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 310 transitions. [2021-11-23 01:52:10,545 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 310 transitions. Word has length 55 [2021-11-23 01:52:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:10,546 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 310 transitions. [2021-11-23 01:52:10,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 01:52:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 310 transitions. [2021-11-23 01:52:10,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 01:52:10,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:10,548 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:10,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:10,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:10,763 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:10,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:10,764 INFO L85 PathProgramCache]: Analyzing trace with hash 627845419, now seen corresponding path program 1 times [2021-11-23 01:52:10,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:10,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254964619] [2021-11-23 01:52:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:10,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 01:52:10,822 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:10,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254964619] [2021-11-23 01:52:10,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254964619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:52:10,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488400278] [2021-11-23 01:52:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:10,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:10,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:10,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:52:10,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 01:52:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:10,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 01:52:10,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 01:52:10,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 01:52:10,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488400278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:10,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 01:52:10,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-23 01:52:10,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170718720] [2021-11-23 01:52:10,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:10,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:10,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:52:10,990 INFO L87 Difference]: Start difference. First operand 249 states and 310 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 01:52:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:11,033 INFO L93 Difference]: Finished difference Result 425 states and 525 transitions. [2021-11-23 01:52:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:11,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56 [2021-11-23 01:52:11,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:11,037 INFO L225 Difference]: With dead ends: 425 [2021-11-23 01:52:11,037 INFO L226 Difference]: Without dead ends: 181 [2021-11-23 01:52:11,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:52:11,042 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 27 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:11,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 124 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:52:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-23 01:52:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-23 01:52:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 153 states have (on average 1.2026143790849673) internal successors, (184), 154 states have internal predecessors, (184), 16 states have call successors, (16), 12 states have call predecessors, (16), 11 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 01:52:11,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 215 transitions. [2021-11-23 01:52:11,065 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 215 transitions. Word has length 56 [2021-11-23 01:52:11,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:11,068 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 215 transitions. [2021-11-23 01:52:11,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 01:52:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 215 transitions. [2021-11-23 01:52:11,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 01:52:11,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:11,070 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:11,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:11,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:11,295 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash 523752351, now seen corresponding path program 1 times [2021-11-23 01:52:11,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:11,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960641830] [2021-11-23 01:52:11,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:11,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 01:52:11,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:11,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960641830] [2021-11-23 01:52:11,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960641830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:52:11,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069119466] [2021-11-23 01:52:11,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:11,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:11,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:11,359 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:52:11,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 01:52:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:11,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:52:11,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:11,535 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 01:52:11,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 01:52:11,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069119466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:11,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 01:52:11,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-23 01:52:11,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782607335] [2021-11-23 01:52:11,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:11,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:11,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:11,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:11,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:52:11,539 INFO L87 Difference]: Start difference. First operand 181 states and 215 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 01:52:11,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:11,572 INFO L93 Difference]: Finished difference Result 283 states and 346 transitions. [2021-11-23 01:52:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:11,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 60 [2021-11-23 01:52:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:11,575 INFO L225 Difference]: With dead ends: 283 [2021-11-23 01:52:11,575 INFO L226 Difference]: Without dead ends: 168 [2021-11-23 01:52:11,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:52:11,576 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 40 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:11,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 122 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:52:11,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-23 01:52:11,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2021-11-23 01:52:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 140 states have (on average 1.1714285714285715) internal successors, (164), 140 states have internal predecessors, (164), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 01:52:11,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 193 transitions. [2021-11-23 01:52:11,596 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 193 transitions. Word has length 60 [2021-11-23 01:52:11,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:11,597 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 193 transitions. [2021-11-23 01:52:11,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 01:52:11,597 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 193 transitions. [2021-11-23 01:52:11,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 01:52:11,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:11,598 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:11,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 01:52:11,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 01:52:11,819 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:11,820 INFO L85 PathProgramCache]: Analyzing trace with hash 96621917, now seen corresponding path program 1 times [2021-11-23 01:52:11,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:11,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117125912] [2021-11-23 01:52:11,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:11,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 01:52:11,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:11,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117125912] [2021-11-23 01:52:11,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117125912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:11,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:11,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 01:52:11,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691075472] [2021-11-23 01:52:11,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:11,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:52:11,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:11,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:52:11,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:52:11,862 INFO L87 Difference]: Start difference. First operand 166 states and 193 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 01:52:11,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:11,908 INFO L93 Difference]: Finished difference Result 264 states and 315 transitions. [2021-11-23 01:52:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 01:52:11,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2021-11-23 01:52:11,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:11,910 INFO L225 Difference]: With dead ends: 264 [2021-11-23 01:52:11,910 INFO L226 Difference]: Without dead ends: 164 [2021-11-23 01:52:11,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:52:11,912 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 61 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:11,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 115 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:52:11,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-23 01:52:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-23 01:52:11,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 138 states have (on average 1.1521739130434783) internal successors, (159), 138 states have internal predecessors, (159), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 01:52:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 188 transitions. [2021-11-23 01:52:11,930 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 188 transitions. Word has length 60 [2021-11-23 01:52:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:11,930 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 188 transitions. [2021-11-23 01:52:11,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 01:52:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 188 transitions. [2021-11-23 01:52:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 01:52:11,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:11,932 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:11,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 01:52:11,932 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:11,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:11,933 INFO L85 PathProgramCache]: Analyzing trace with hash 88585954, now seen corresponding path program 1 times [2021-11-23 01:52:11,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:11,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461468614] [2021-11-23 01:52:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:11,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-23 01:52:12,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:12,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461468614] [2021-11-23 01:52:12,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461468614] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:52:12,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982062335] [2021-11-23 01:52:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:12,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:52:12,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:52:12,008 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:52:12,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 01:52:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:12,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 01:52:12,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:52:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 01:52:12,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:52:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-23 01:52:12,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982062335] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:52:12,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [547931962] [2021-11-23 01:52:12,555 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2021-11-23 01:52:12,555 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:52:12,556 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:52:12,556 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:52:12,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:52:17,706 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 55 for LOIs [2021-11-23 01:52:17,716 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 75 for LOIs [2021-11-23 01:52:17,729 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify_threads with input of size 45 for LOIs [2021-11-23 01:52:17,889 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 01:52:23,990 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10527#(and (<= 0 ~p_dw_pc~0) (= ~q_free~0 1) (<= 0 ~p_num_write~0) (= 1 ~c_dr_i~0) (= ~c_dr_pc~0 1) (= ~c_num_read~0 1) (not (= ~c_num_read~0 ~p_num_write~0)) (= ~q_write_ev~0 2) (= ~c_last_read~0 ~q_buf_0~0) (= ~q_read_ev~0 2) (= ~p_dw_i~0 1) (= |#NULL.offset| 0) (= ~c_last_read~0 ~p_last_write~0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 01:52:23,990 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 01:52:23,990 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 01:52:23,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 01:52:23,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80465947] [2021-11-23 01:52:23,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 01:52:23,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 01:52:23,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:23,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 01:52:23,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 01:52:23,993 INFO L87 Difference]: Start difference. First operand 164 states and 188 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-23 01:52:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:24,175 INFO L93 Difference]: Finished difference Result 347 states and 398 transitions. [2021-11-23 01:52:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 01:52:24,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 61 [2021-11-23 01:52:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:24,179 INFO L225 Difference]: With dead ends: 347 [2021-11-23 01:52:24,179 INFO L226 Difference]: Without dead ends: 344 [2021-11-23 01:52:24,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 142 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 01:52:24,181 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 152 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:24,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 387 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:52:24,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-23 01:52:24,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 220. [2021-11-23 01:52:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 185 states have (on average 1.162162162162162) internal successors, (215), 186 states have internal predecessors, (215), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-23 01:52:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 254 transitions. [2021-11-23 01:52:24,225 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 254 transitions. Word has length 61 [2021-11-23 01:52:24,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:24,226 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 254 transitions. [2021-11-23 01:52:24,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-23 01:52:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 254 transitions. [2021-11-23 01:52:24,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 01:52:24,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:24,228 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:24,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-23 01:52:24,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 01:52:24,447 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:52:24,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash -807361363, now seen corresponding path program 2 times [2021-11-23 01:52:24,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:24,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478076590] [2021-11-23 01:52:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:24,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 01:52:24,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:24,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478076590] [2021-11-23 01:52:24,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478076590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:24,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:24,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:52:24,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40220092] [2021-11-23 01:52:24,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:24,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:24,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:24,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:24,492 INFO L87 Difference]: Start difference. First operand 220 states and 254 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 01:52:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:24,528 INFO L93 Difference]: Finished difference Result 344 states and 397 transitions. [2021-11-23 01:52:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:24,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 74 [2021-11-23 01:52:24,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:24,529 INFO L225 Difference]: With dead ends: 344 [2021-11-23 01:52:24,529 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 01:52:24,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:24,533 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 38 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:24,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 112 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:52:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 01:52:24,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 01:52:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:52:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 01:52:24,535 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2021-11-23 01:52:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:24,535 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 01:52:24,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 01:52:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 01:52:24,536 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 01:52:24,538 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 01:52:24,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 01:52:24,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 01:52:31,729 INFO L858 garLoopResultBuilder]: For program point L62(lines 62 67) no Hoare annotation was computed. [2021-11-23 01:52:31,730 INFO L854 garLoopResultBuilder]: At program point immediate_notify_threadsENTRY(lines 76 100) the Hoare annotation is: (let ((.cse24 (select |#memory_int| 1))) (let ((.cse0 (not (= ~a_t~0 0))) (.cse1 (not (= (select .cse24 0) 48))) (.cse2 (not (= |#NULL.offset| 0))) (.cse3 (not (= ~p_num_write~0 1))) (.cse4 (not (= 2 (select |#length| 1)))) (.cse5 (not (= ~c_dr_pc~0 0))) (.cse6 (not (< 0 |#StackHeapBarrier|))) (.cse7 (not (= (select |#valid| 3) 1))) (.cse8 (not (<= 0 (+ ~q_buf_0~0 2147483648)))) (.cse9 (not (= (select |#length| 3) 12))) (.cse11 (not (= (select |#valid| 0) 0))) (.cse12 (not (= (select .cse24 1) 0))) (.cse13 (not (= (select |#valid| 1) 1))) (.cse14 (not (= 19 (select |#length| 2)))) (.cse15 (not (= |#NULL.base| 0))) (.cse16 (not (= ~p_dw_i~0 1))) (.cse17 (not (= (select |#valid| 2) 1))) (.cse18 (not (<= ~p_last_write~0 2147483647))) (.cse19 (not (<= 2 |old(~p_dw_st~0)|))) (.cse10 (not (= ~p_last_write~0 ~q_buf_0~0))) (.cse21 (not (= ~q_write_ev~0 2))) (.cse22 (not (= ~q_free~0 1))) (.cse20 (<= 2 ~p_dw_st~0)) (.cse23 (not (= ~c_last_read~0 ~p_last_write~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (not (<= 1 ~c_dr_i~0)) .cse8 (not (= ~p_dw_pc~0 0)) .cse9 .cse10 .cse11 .cse12 (not (<= ~c_last_read~0 0)) (not (= ~c_num_read~0 0)) .cse13 .cse14 (not (<= ~q_free~0 0)) .cse15 (not (<= ~c_dr_i~0 1)) (not (= |old(~p_dw_st~0)| 1)) (not (= ~q_write_ev~0 1)) .cse16 .cse17 (and (<= ~c_dr_st~0 0) (<= 1 ~p_dw_st~0) (<= 0 ~c_dr_st~0) (<= ~p_dw_st~0 1)) (not (<= 0 ~q_free~0)) .cse18 (not (<= 0 ~c_last_read~0)) (not (= ~q_read_ev~0 2)) (not (<= |old(~c_dr_st~0)| 0)) (not (<= 0 |old(~c_dr_st~0)|))) (or .cse0 .cse19 .cse1 (not (<= |old(~p_dw_st~0)| 2)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (not (<= 1 ~c_num_read~0)) .cse8 .cse9 .cse10 .cse11 .cse12 (not (= ~p_dw_pc~0 1)) .cse13 .cse14 (and (<= ~p_dw_st~0 2) (<= 1 ~c_dr_st~0) (<= ~c_dr_st~0 1) .cse20) .cse15 (not (<= ~q_read_ev~0 1)) .cse21 .cse16 (not (<= 1 |old(~c_dr_st~0)|)) .cse17 .cse22 .cse18 (not (<= 1 ~q_read_ev~0)) .cse23 (not (<= |old(~c_dr_st~0)| 1)) (not (<= ~c_num_read~0 1)) (not (= 1 ~c_dr_i~0))) (or .cse19 (not (<= ~c_num_read~0 ~p_num_write~0)) .cse10 (not (<= ~p_num_write~0 ~c_num_read~0)) (not (= ~c_dr_pc~0 1)) .cse21 .cse22 .cse20 .cse23)))) [2021-11-23 01:52:31,730 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 51) no Hoare annotation was computed. [2021-11-23 01:52:31,730 INFO L858 garLoopResultBuilder]: For program point immediate_notify_threadsEXIT(lines 76 100) no Hoare annotation was computed. [2021-11-23 01:52:31,731 INFO L858 garLoopResultBuilder]: For program point L42-2(lines 42 51) no Hoare annotation was computed. [2021-11-23 01:52:31,731 INFO L858 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2021-11-23 01:52:31,731 INFO L858 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2021-11-23 01:52:31,732 INFO L854 garLoopResultBuilder]: At program point L53(lines 41 55) the Hoare annotation is: (let ((.cse24 (select |#memory_int| 1))) (let ((.cse0 (not (= ~a_t~0 0))) (.cse1 (not (= (select .cse24 0) 48))) (.cse2 (not (= |#NULL.offset| 0))) (.cse3 (not (= ~p_num_write~0 1))) (.cse4 (not (= 2 (select |#length| 1)))) (.cse5 (not (= ~c_dr_pc~0 0))) (.cse6 (not (< 0 |#StackHeapBarrier|))) (.cse7 (not (= (select |#valid| 3) 1))) (.cse8 (not (<= 0 (+ ~q_buf_0~0 2147483648)))) (.cse9 (not (= (select |#length| 3) 12))) (.cse11 (not (= (select |#valid| 0) 0))) (.cse12 (not (= (select .cse24 1) 0))) (.cse13 (not (= (select |#valid| 1) 1))) (.cse14 (not (= 19 (select |#length| 2)))) (.cse15 (not (= |#NULL.base| 0))) (.cse16 (not (= ~p_dw_i~0 1))) (.cse17 (not (= (select |#valid| 2) 1))) (.cse18 (not (<= ~p_last_write~0 2147483647))) (.cse19 (not (<= 2 |old(~p_dw_st~0)|))) (.cse10 (not (= ~p_last_write~0 ~q_buf_0~0))) (.cse20 (not (= ~q_write_ev~0 2))) (.cse21 (not (= ~q_free~0 1))) (.cse23 (<= 2 ~p_dw_st~0)) (.cse22 (not (= ~c_last_read~0 ~p_last_write~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (not (<= 1 ~c_dr_i~0)) .cse8 (not (= ~p_dw_pc~0 0)) .cse9 .cse10 .cse11 .cse12 (not (<= ~c_last_read~0 0)) (not (= ~c_num_read~0 0)) .cse13 .cse14 (and (= |immediate_notify_threads_is_do_write_p_triggered_~__retres1~0#1| 0) (<= 1 ~p_dw_st~0) (= ~c_dr_st~0 |old(~c_dr_st~0)|) (<= ~p_dw_st~0 1)) (not (<= ~q_free~0 0)) .cse15 (not (<= ~c_dr_i~0 1)) (not (= |old(~p_dw_st~0)| 1)) (not (= ~q_write_ev~0 1)) .cse16 .cse17 (not (<= 0 ~q_free~0)) .cse18 (not (<= 0 ~c_last_read~0)) (not (= ~q_read_ev~0 2)) (not (<= |old(~c_dr_st~0)| 0)) (not (<= 0 |old(~c_dr_st~0)|))) (or .cse0 .cse19 .cse1 (not (<= |old(~p_dw_st~0)| 2)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (not (<= 1 ~c_num_read~0)) .cse8 .cse9 .cse10 .cse11 .cse12 (not (= ~p_dw_pc~0 1)) .cse13 .cse14 .cse15 (not (<= ~q_read_ev~0 1)) .cse20 .cse16 (not (<= 1 |old(~c_dr_st~0)|)) .cse17 .cse21 .cse18 (not (<= 1 ~q_read_ev~0)) .cse22 (and (= |immediate_notify_threads_is_do_write_p_triggered_~__retres1~0#1| 1) (<= ~p_dw_st~0 2) (<= 1 ~c_dr_st~0) (<= ~c_dr_st~0 1) .cse23) (not (<= |old(~c_dr_st~0)| 1)) (not (<= ~c_num_read~0 1)) (not (= 1 ~c_dr_i~0))) (or .cse19 (not (<= ~c_num_read~0 ~p_num_write~0)) .cse10 (not (<= ~p_num_write~0 ~c_num_read~0)) (not (= ~c_dr_pc~0 1)) .cse20 .cse21 .cse23 .cse22)))) [2021-11-23 01:52:31,732 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 48) no Hoare annotation was computed. [2021-11-23 01:52:31,732 INFO L854 garLoopResultBuilder]: At program point L72(lines 60 74) the Hoare annotation is: (let ((.cse21 (select |#memory_int| 1))) (let ((.cse0 (not (= ~a_t~0 0))) (.cse1 (not (= (select .cse21 0) 48))) (.cse2 (not (= |#NULL.offset| 0))) (.cse3 (not (= ~p_num_write~0 1))) (.cse4 (not (= 2 (select |#length| 1)))) (.cse5 (not (= ~c_dr_pc~0 0))) (.cse6 (not (< 0 |#StackHeapBarrier|))) (.cse7 (not (= (select |#valid| 3) 1))) (.cse8 (not (<= 0 (+ ~q_buf_0~0 2147483648)))) (.cse9 (not (= (select |#length| 3) 12))) (.cse10 (not (= ~p_last_write~0 ~q_buf_0~0))) (.cse11 (not (= (select |#valid| 0) 0))) (.cse12 (not (= (select .cse21 1) 0))) (.cse13 (not (= (select |#valid| 1) 1))) (.cse14 (not (= 19 (select |#length| 2)))) (.cse19 (= |immediate_notify_threads_is_do_read_c_triggered_~__retres1~1#1| 0)) (.cse20 (= |immediate_notify_threads_is_do_write_p_triggered_#res#1| |immediate_notify_threads_is_do_write_p_triggered_~__retres1~0#1|)) (.cse15 (not (= |#NULL.base| 0))) (.cse16 (not (= ~p_dw_i~0 1))) (.cse17 (not (= (select |#valid| 2) 1))) (.cse18 (not (<= ~p_last_write~0 2147483647)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (not (<= 1 ~c_dr_i~0)) .cse8 (not (= ~p_dw_pc~0 0)) .cse9 .cse10 .cse11 .cse12 (not (<= ~c_last_read~0 0)) (not (= ~c_num_read~0 0)) .cse13 .cse14 (not (<= ~q_free~0 0)) .cse15 (not (<= ~c_dr_i~0 1)) (not (= |old(~p_dw_st~0)| 1)) (not (= ~q_write_ev~0 1)) .cse16 .cse17 (not (<= 0 ~q_free~0)) .cse18 (and (= |old(~p_dw_st~0)| ~p_dw_st~0) (= |immediate_notify_threads_is_do_write_p_triggered_~__retres1~0#1| 0) (= |immediate_notify_threads_~tmp~0#1| 0) (= ~c_dr_st~0 |old(~c_dr_st~0)|) .cse19 .cse20) (not (<= 0 ~c_last_read~0)) (not (= ~q_read_ev~0 2)) (not (<= |old(~c_dr_st~0)| 0)) (not (<= 0 |old(~c_dr_st~0)|))) (or .cse0 (not (<= 2 |old(~p_dw_st~0)|)) .cse1 (not (<= |old(~p_dw_st~0)| 2)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (not (<= 1 ~c_num_read~0)) .cse8 .cse9 .cse10 .cse11 .cse12 (not (= ~p_dw_pc~0 1)) .cse13 .cse14 (and (= |immediate_notify_threads_is_do_write_p_triggered_~__retres1~0#1| 1) (= |immediate_notify_threads_~tmp~0#1| |immediate_notify_threads_is_do_write_p_triggered_#res#1|) (<= 1 ~c_dr_st~0) .cse19 .cse20 (= ~p_dw_st~0 0) (<= ~c_dr_st~0 1)) .cse15 (not (<= ~q_read_ev~0 1)) (not (= ~q_write_ev~0 2)) .cse16 (not (<= 1 |old(~c_dr_st~0)|)) .cse17 (not (= ~q_free~0 1)) .cse18 (not (<= 1 ~q_read_ev~0)) (not (= ~c_last_read~0 ~p_last_write~0)) (not (<= |old(~c_dr_st~0)| 1)) (not (<= ~c_num_read~0 1)) (not (= 1 ~c_dr_i~0)))))) [2021-11-23 01:52:31,733 INFO L858 garLoopResultBuilder]: For program point exists_runnable_threadEXIT(lines 220 239) no Hoare annotation was computed. [2021-11-23 01:52:31,733 INFO L861 garLoopResultBuilder]: At program point exists_runnable_threadENTRY(lines 220 239) the Hoare annotation is: true [2021-11-23 01:52:31,733 INFO L854 garLoopResultBuilder]: At program point L192(line 192) the Hoare annotation is: false [2021-11-23 01:52:31,734 INFO L854 garLoopResultBuilder]: At program point L192-1(lines 148 200) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_write_ev~0 2))) (or (and .cse0 (<= ~c_num_read~0 ~p_num_write~0) (= ~q_free~0 1) (<= ~p_num_write~0 ~c_num_read~0) .cse1 (= ~c_last_read~0 ~p_last_write~0)) (let ((.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= ~c_num_read~0 0) (not (= |ULTIMATE.start_eval_~tmp___0~1#1| 0)) .cse0 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_eval_~tmp___0~1#1| 2147483648)) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= ~q_free~0 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_eval_~tmp___0~1#1| 2147483647) (<= 0 (+ ~q_buf_0~0 2147483648)) (= ~p_dw_pc~0 1) .cse1 (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (= ~q_read_ev~0 2) (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648)) (= ~c_dr_pc~0 0) (not (= |ULTIMATE.start_eval_~tmp~1#1| 0)) (= 2 ~p_dw_st~0) (= ~p_dw_i~0 1) (= (select |#valid| 0) 0) (= ~p_num_write~0 1) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (<= ~p_last_write~0 2147483647) (= ~a_t~0 0) (= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= (select .cse2 0) 48) (= (select .cse2 1) 0) (= ~c_dr_st~0 1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))) [2021-11-23 01:52:31,734 INFO L858 garLoopResultBuilder]: For program point L250(line 250) no Hoare annotation was computed. [2021-11-23 01:52:31,734 INFO L858 garLoopResultBuilder]: For program point L118(lines 117 137) no Hoare annotation was computed. [2021-11-23 01:52:31,734 INFO L854 garLoopResultBuilder]: At program point L300(line 300) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse5 (= ~c_dr_pc~0 1)) (.cse4 (= ~q_write_ev~0 2)) (.cse3 (<= 2 ~p_dw_st~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 0 ~q_free~0) (= ~c_num_read~0 0) (<= ~p_dw_pc~0 1) .cse1 (<= 0 ~p_dw_pc~0) (= ~c_last_read~0 0) (<= 0 ~p_num_write~0) (= 1 ~c_dr_i~0) (<= ~p_dw_st~0 2) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= ~p_num_write~0 1) (<= ~q_read_ev~0 2) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (<= 0 (+ ~q_buf_0~0 2147483648)) .cse4 (<= ~q_free~0 1) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1) (<= 2 ~q_read_ev~0) (= |#NULL.offset| 0) (<= ~p_last_write~0 2147483647) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (= ~a_t~0 0) .cse3 (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and .cse0 .cse1 (<= ~c_num_read~0 ~p_num_write~0) .cse2 (<= ~p_num_write~0 ~c_num_read~0) .cse5 .cse4) (let ((.cse6 (+ ~c_num_read~0 1))) (and .cse1 (= ~q_free~0 0) .cse5 .cse4 (<= .cse6 ~p_num_write~0) .cse3 (<= ~p_num_write~0 .cse6))))) [2021-11-23 01:52:31,735 INFO L854 garLoopResultBuilder]: At program point L300-1(line 300) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse5 (= ~c_dr_pc~0 1)) (.cse4 (= ~q_write_ev~0 2)) (.cse3 (<= 2 ~p_dw_st~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 0 ~q_free~0) (= ~c_num_read~0 0) (<= ~p_dw_pc~0 1) .cse1 (<= 0 ~p_dw_pc~0) (= ~c_last_read~0 0) (<= 0 ~p_num_write~0) (= 1 ~c_dr_i~0) (<= ~p_dw_st~0 2) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= ~p_num_write~0 1) (<= ~q_read_ev~0 2) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (<= 0 (+ ~q_buf_0~0 2147483648)) .cse4 (<= ~q_free~0 1) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1) (<= 2 ~q_read_ev~0) (= |#NULL.offset| 0) (<= ~p_last_write~0 2147483647) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (= ~a_t~0 0) .cse3 (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and .cse0 .cse1 (<= ~c_num_read~0 ~p_num_write~0) .cse2 (<= ~p_num_write~0 ~c_num_read~0) .cse5 .cse4) (let ((.cse6 (+ ~c_num_read~0 1))) (and .cse1 (= ~q_free~0 0) .cse5 .cse4 (<= .cse6 ~p_num_write~0) .cse3 (<= ~p_num_write~0 .cse6))))) [2021-11-23 01:52:31,735 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 01:52:31,735 INFO L854 garLoopResultBuilder]: At program point L152(lines 152 156) the Hoare annotation is: (let ((.cse0 (+ ~c_num_read~0 1))) (and (= ~p_last_write~0 ~q_buf_0~0) (= ~q_free~0 0) (= ~c_dr_pc~0 1) (= ~q_write_ev~0 2) (<= .cse0 ~p_num_write~0) (<= 2 ~p_dw_st~0) (<= ~p_num_write~0 .cse0))) [2021-11-23 01:52:31,735 INFO L854 garLoopResultBuilder]: At program point L119(lines 105 142) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_write_ev~0 2))) (or (let ((.cse2 (select |#memory_int| 1))) (and (= ~p_dw_pc~0 0) (= ~c_dr_st~0 0) (= ~p_num_write~0 0) (= (select |#length| 3) 12) (= ~c_num_read~0 0) .cse0 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647) (= ~p_last_write~0 0) (= ~q_free~0 1) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= ~q_read_ev~0 2) .cse1 (= ~p_dw_st~0 1) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648)) (= ~c_dr_pc~0 0) (not (= |ULTIMATE.start_eval_~tmp~1#1| 0)) (= ~p_dw_i~0 1) (= (select |#valid| 0) 0) (<= 2 ~q_read_ev~0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= ~a_t~0 0) (= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= (select .cse2 0) 48) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (and .cse0 (<= ~c_num_read~0 ~p_num_write~0) (<= ~p_num_write~0 ~c_num_read~0) (= ~c_dr_pc~0 1) .cse1))) [2021-11-23 01:52:31,735 INFO L858 garLoopResultBuilder]: For program point L276(lines 276 283) no Hoare annotation was computed. [2021-11-23 01:52:31,735 INFO L858 garLoopResultBuilder]: For program point L161(lines 160 195) no Hoare annotation was computed. [2021-11-23 01:52:31,735 INFO L858 garLoopResultBuilder]: For program point L252(lines 252 256) no Hoare annotation was computed. [2021-11-23 01:52:31,736 INFO L858 garLoopResultBuilder]: For program point L252-1(lines 247 287) no Hoare annotation was computed. [2021-11-23 01:52:31,736 INFO L858 garLoopResultBuilder]: For program point L261(lines 261 268) no Hoare annotation was computed. [2021-11-23 01:52:31,736 INFO L858 garLoopResultBuilder]: For program point L162-1(lines 162 172) no Hoare annotation was computed. [2021-11-23 01:52:31,736 INFO L854 garLoopResultBuilder]: At program point L187(line 187) the Hoare annotation is: false [2021-11-23 01:52:31,736 INFO L854 garLoopResultBuilder]: At program point L179(line 179) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_free~0 1)) (.cse2 (= ~q_write_ev~0 2)) (.cse3 (= ~c_last_read~0 ~p_last_write~0))) (or (let ((.cse4 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= |ULTIMATE.start_eval_~tmp___0~1#1| 0)) .cse0 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647) (= |ULTIMATE.start_do_read_c_~a~0#1| ~q_buf_0~0) (<= 0 (+ |ULTIMATE.start_eval_~tmp___0~1#1| 2147483648)) .cse1 (= ~q_read_ev~0 1) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= ~c_num_read~0 1) (<= |ULTIMATE.start_eval_~tmp___0~1#1| 2147483647) (<= 0 (+ ~q_buf_0~0 2147483648)) (= ~p_dw_pc~0 1) .cse2 (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648)) (= ~c_dr_pc~0 0) (not (= |ULTIMATE.start_eval_~tmp~1#1| 0)) (= 2 ~p_dw_st~0) (= ~p_dw_i~0 1) (= (select |#valid| 0) 0) (= ~p_num_write~0 1) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) .cse3 (<= ~p_last_write~0 2147483647) (= ~a_t~0 0) (= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= (select .cse4 0) 48) (= (select .cse4 1) 0) (= ~c_dr_st~0 1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (and .cse0 (<= ~c_num_read~0 ~p_num_write~0) .cse1 (<= ~p_num_write~0 ~c_num_read~0) (= ~c_dr_pc~0 1) .cse2 .cse3 (<= 2 ~p_dw_st~0)))) [2021-11-23 01:52:31,736 INFO L858 garLoopResultBuilder]: For program point L179-1(line 179) no Hoare annotation was computed. [2021-11-23 01:52:31,736 INFO L861 garLoopResultBuilder]: At program point L336(lines 313 341) the Hoare annotation is: true [2021-11-23 01:52:31,737 INFO L854 garLoopResultBuilder]: At program point L138(lines 101 143) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_free~0 0)) (.cse2 (= ~q_write_ev~0 2))) (or (let ((.cse3 (+ ~c_num_read~0 1))) (and .cse0 .cse1 (= ~c_dr_pc~0 1) .cse2 (<= .cse3 ~p_num_write~0) (<= 2 ~p_dw_st~0) (<= ~p_num_write~0 .cse3))) (let ((.cse4 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) .cse0 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647) (<= ~c_num_read~0 0) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) .cse1 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ ~q_buf_0~0 2147483648)) (= ~p_dw_pc~0 1) .cse2 (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (= ~q_read_ev~0 2) (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648)) (= ~c_dr_pc~0 0) (not (= |ULTIMATE.start_eval_~tmp~1#1| 0)) (= 2 ~p_dw_st~0) (= ~p_dw_i~0 1) (= (select |#valid| 0) 0) (= ~p_num_write~0 1) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (<= ~p_last_write~0 2147483647) (= ~a_t~0 0) (= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= (select .cse4 0) 48) (= (select .cse4 1) 0) (<= 0 ~c_num_read~0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))) [2021-11-23 01:52:31,737 INFO L854 garLoopResultBuilder]: At program point L196(lines 145 201) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse2 (= ~q_free~0 1))) (or (and .cse0 .cse1 .cse2 (<= 2 ~p_dw_st~0)) (and .cse0 .cse1 (<= ~c_num_read~0 ~p_num_write~0) .cse2 (<= ~p_num_write~0 ~c_num_read~0) (= ~c_dr_pc~0 1) (= ~q_write_ev~0 2)))) [2021-11-23 01:52:31,737 INFO L858 garLoopResultBuilder]: For program point L106(lines 106 114) no Hoare annotation was computed. [2021-11-23 01:52:31,737 INFO L854 garLoopResultBuilder]: At program point L288(lines 240 293) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse5 (= ~c_dr_pc~0 1)) (.cse4 (= ~q_write_ev~0 2)) (.cse3 (<= 2 ~p_dw_st~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 0 ~q_free~0) (= ~c_num_read~0 0) (<= ~p_dw_pc~0 1) .cse1 (<= 0 ~p_dw_pc~0) (= ~c_last_read~0 0) (<= 0 ~p_num_write~0) (= 1 ~c_dr_i~0) (<= ~p_dw_st~0 2) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= ~p_num_write~0 1) (<= ~q_read_ev~0 2) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (<= 0 (+ ~q_buf_0~0 2147483648)) .cse4 (<= ~q_free~0 1) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1) (<= 2 ~q_read_ev~0) (= |#NULL.offset| 0) (<= ~p_last_write~0 2147483647) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) (= ~a_t~0 0) .cse3 (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and .cse0 .cse1 (<= ~c_num_read~0 ~p_num_write~0) .cse2 (<= ~p_num_write~0 ~c_num_read~0) .cse5 .cse4) (let ((.cse6 (+ ~c_num_read~0 1))) (and .cse1 (= ~q_free~0 0) .cse5 .cse4 (<= .cse6 ~p_num_write~0) .cse3 (<= ~p_num_write~0 .cse6))))) [2021-11-23 01:52:31,738 INFO L854 garLoopResultBuilder]: At program point L272(lines 247 287) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse4 (<= 0 ~p_dw_pc~0)) (.cse5 (<= 0 ~p_num_write~0)) (.cse6 (<= ~q_read_ev~0 2)) (.cse7 (<= ~q_free~0 1)) (.cse8 (<= 2 ~q_read_ev~0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse10 (= ~c_dr_pc~0 1)) (.cse11 (= ~q_write_ev~0 2)) (.cse3 (<= 2 ~p_dw_st~0))) (or (and .cse0 .cse1 .cse2 .cse3) (let ((.cse9 (select |#memory_int| 1))) (and (<= ~p_last_write~0 0) (<= 1 ~p_dw_i~0) (<= 1 ~q_free~0) (<= 1 |ULTIMATE.start_start_simulation_~kernel_st~0#1|) (= (select |#length| 3) 12) (<= ~p_num_write~0 0) (<= ~c_dr_st~0 0) (<= 0 ~q_buf_0~0) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= 1 ~c_dr_i~0) (<= 0 ~c_dr_pc~0) (<= ~c_num_read~0 0) (<= ~c_last_read~0 0) (<= 0 ~p_last_write~0) (<= ~p_dw_pc~0 0) (<= ~c_dr_i~0 1) .cse4 .cse5 (<= ~a_t~0 0) (<= 2 ~q_write_ev~0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |#NULL.offset| 0) (<= ~p_dw_i~0 1) (<= 0 ~c_dr_st~0) .cse6 .cse7 (<= ~q_write_ev~0 2) (= ~p_dw_st~0 0) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (<= 0 ~a_t~0) (<= |#NULL.base| 0) (= (select |#valid| 0) 0) .cse8 (= (select |#valid| 2) 1) (<= ~c_dr_pc~0 0) (= (select .cse9 0) 48) (<= 0 |#NULL.offset|) (= (select .cse9 1) 0) (<= 0 ~c_num_read~0) (<= ~q_buf_0~0 0) (<= 0 ~c_last_read~0) (< 0 |#StackHeapBarrier|))) (and .cse0 .cse1 (<= ~c_num_read~0 ~p_num_write~0) .cse2 (<= ~p_num_write~0 ~c_num_read~0) .cse10 .cse11) (and (<= 0 ~q_free~0) (= ~c_num_read~0 0) (<= ~p_dw_pc~0 1) .cse1 .cse4 (= ~c_last_read~0 0) .cse5 (= 1 ~c_dr_i~0) (<= ~p_dw_st~0 2) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= ~p_num_write~0 1) .cse6 (<= 0 (+ ~q_buf_0~0 2147483648)) .cse11 .cse7 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1) .cse8 (= |#NULL.offset| 0) (<= ~p_last_write~0 2147483647) (= ~a_t~0 0) .cse3 (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (let ((.cse12 (+ ~c_num_read~0 1))) (and .cse1 (= ~q_free~0 0) .cse10 .cse11 (<= .cse12 ~p_num_write~0) .cse3 (<= ~p_num_write~0 .cse12))))) [2021-11-23 01:52:31,738 INFO L858 garLoopResultBuilder]: For program point L330(lines 330 334) no Hoare annotation was computed. [2021-11-23 01:52:31,738 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 01:52:31,738 INFO L854 garLoopResultBuilder]: At program point L248(line 248) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse4 (<= 0 ~p_dw_pc~0)) (.cse5 (<= 0 ~p_num_write~0)) (.cse6 (<= ~q_read_ev~0 2)) (.cse7 (<= ~q_free~0 1)) (.cse8 (<= 2 ~q_read_ev~0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse10 (= ~c_dr_pc~0 1)) (.cse11 (= ~q_write_ev~0 2)) (.cse3 (<= 2 ~p_dw_st~0))) (or (and .cse0 .cse1 .cse2 .cse3) (let ((.cse9 (select |#memory_int| 1))) (and (<= ~p_last_write~0 0) (<= 1 ~p_dw_i~0) (<= 1 ~q_free~0) (<= 1 |ULTIMATE.start_start_simulation_~kernel_st~0#1|) (= (select |#length| 3) 12) (<= ~p_num_write~0 0) (<= ~c_dr_st~0 0) (<= 0 ~q_buf_0~0) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= 1 ~c_dr_i~0) (<= 0 ~c_dr_pc~0) (<= ~c_num_read~0 0) (<= ~c_last_read~0 0) (<= 0 ~p_last_write~0) (<= ~p_dw_pc~0 0) (<= ~c_dr_i~0 1) .cse4 .cse5 (<= ~a_t~0 0) (<= 2 ~q_write_ev~0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |#NULL.offset| 0) (<= ~p_dw_i~0 1) (<= 0 ~c_dr_st~0) .cse6 .cse7 (<= ~q_write_ev~0 2) (= ~p_dw_st~0 0) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (<= 0 ~a_t~0) (<= |#NULL.base| 0) (= (select |#valid| 0) 0) .cse8 (= (select |#valid| 2) 1) (<= ~c_dr_pc~0 0) (= (select .cse9 0) 48) (<= 0 |#NULL.offset|) (= (select .cse9 1) 0) (<= 0 ~c_num_read~0) (<= ~q_buf_0~0 0) (<= 0 ~c_last_read~0) (< 0 |#StackHeapBarrier|))) (and .cse0 .cse1 (<= ~c_num_read~0 ~p_num_write~0) .cse2 (<= ~p_num_write~0 ~c_num_read~0) .cse10 .cse11) (and (<= 0 ~q_free~0) (= ~c_num_read~0 0) (<= ~p_dw_pc~0 1) .cse1 .cse4 (= ~c_last_read~0 0) .cse5 (= 1 ~c_dr_i~0) (<= ~p_dw_st~0 2) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= ~p_num_write~0 1) .cse6 (<= 0 (+ ~q_buf_0~0 2147483648)) .cse11 .cse7 (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1) .cse8 (= |#NULL.offset| 0) (<= ~p_last_write~0 2147483647) (= ~a_t~0 0) .cse3 (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (let ((.cse12 (+ ~c_num_read~0 1))) (and .cse1 (= ~q_free~0 0) .cse10 .cse11 (<= .cse12 ~p_num_write~0) .cse3 (<= ~p_num_write~0 .cse12))))) [2021-11-23 01:52:31,739 INFO L858 garLoopResultBuilder]: For program point L182(lines 182 194) no Hoare annotation was computed. [2021-11-23 01:52:31,739 INFO L858 garLoopResultBuilder]: For program point L149(lines 149 157) no Hoare annotation was computed. [2021-11-23 01:52:31,739 INFO L858 garLoopResultBuilder]: For program point L257(lines 247 287) no Hoare annotation was computed. [2021-11-23 01:52:31,739 INFO L854 garLoopResultBuilder]: At program point L323-2(lines 323 335) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse13 (= ~c_dr_pc~0 1)) (.cse3 (<= 2 ~p_dw_st~0)) (.cse4 (= ~c_num_read~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse2 (= ~q_free~0 1)) (.cse5 (= ~c_last_read~0 0)) (.cse6 (= 1 ~c_dr_i~0)) (.cse7 (= ~q_write_ev~0 2)) (.cse8 (= ~c_dr_pc~0 0)) (.cse9 (= ~p_dw_i~0 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= ~a_t~0 0)) (.cse12 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 0 ~q_free~0) .cse4 (<= ~p_dw_pc~0 1) .cse1 (<= 0 ~p_dw_pc~0) .cse5 (<= 0 ~p_num_write~0) .cse6 (<= ~p_dw_st~0 2) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= ~p_num_write~0 1) (<= ~q_read_ev~0 2) (<= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (<= 0 (+ ~q_buf_0~0 2147483648)) .cse7 (<= ~q_free~0 1) .cse8 .cse9 (<= 2 ~q_read_ev~0) .cse10 (<= ~p_last_write~0 2147483647) (<= 0 |ULTIMATE.start_eval_~tmp___1~0#1|) .cse11 .cse3 (<= 0 |#StackHeapBarrier|) .cse12) (and .cse0 .cse1 (<= ~c_num_read~0 ~p_num_write~0) .cse2 (<= ~p_num_write~0 ~c_num_read~0) .cse13 .cse7) (let ((.cse14 (+ ~c_num_read~0 1))) (and .cse1 (= ~q_free~0 0) .cse13 .cse7 (<= .cse14 ~p_num_write~0) .cse3 (<= ~p_num_write~0 .cse14))) (let ((.cse15 (select |#memory_int| 1))) (and (= ~p_dw_pc~0 0) (= ~c_dr_st~0 0) (= ~p_num_write~0 0) (= (select |#length| 3) 12) .cse4 .cse1 (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 0) (= ~q_write_ev~0 ~q_read_ev~0) .cse2 .cse5 .cse6 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) .cse7 (= ~p_dw_st~0 0) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) .cse8 .cse9 (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) .cse10 (= ~c_last_read~0 ~p_last_write~0) .cse11 (= (select .cse15 0) 48) (= (select .cse15 1) 0) (< 0 |#StackHeapBarrier|) .cse12)))) [2021-11-23 01:52:31,739 INFO L858 garLoopResultBuilder]: For program point L183(lines 183 189) no Hoare annotation was computed. [2021-11-23 01:52:31,740 INFO L854 garLoopResultBuilder]: At program point L117-1(lines 105 142) the Hoare annotation is: (let ((.cse30 (select |#memory_int| 1))) (let ((.cse5 (= ~q_free~0 1)) (.cse0 (= ~p_dw_pc~0 0)) (.cse1 (= (select |#length| 3) 12)) (.cse2 (= ~c_num_read~0 0)) (.cse4 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647)) (.cse6 (= ~c_last_read~0 0)) (.cse7 (= 1 ~c_dr_i~0)) (.cse8 (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1)) (.cse9 (= 2 (select |#length| 1))) (.cse10 (= (select |#valid| 3) 1)) (.cse12 (= (select |#valid| 1) 1)) (.cse13 (= 19 (select |#length| 2))) (.cse14 (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648))) (.cse15 (= ~c_dr_pc~0 0)) (.cse16 (not (= |ULTIMATE.start_eval_~tmp~1#1| 0))) (.cse17 (= ~p_dw_i~0 1)) (.cse18 (= (select |#valid| 0) 0)) (.cse19 (= (select |#valid| 2) 1)) (.cse20 (= |#NULL.offset| 0)) (.cse21 (= ~a_t~0 0)) (.cse22 (= |ULTIMATE.start_eval_~tmp___1~0#1| 1)) (.cse23 (= (select .cse30 0) 48)) (.cse24 (= (select .cse30 1) 0)) (.cse25 (< 0 |#StackHeapBarrier|)) (.cse26 (= |#NULL.base| 0)) (.cse3 (= ~p_last_write~0 ~q_buf_0~0)) (.cse28 (= ~q_free~0 0)) (.cse27 (= ~c_dr_pc~0 1)) (.cse11 (= ~q_write_ev~0 2))) (or (and .cse0 (= ~c_dr_st~0 0) (= ~p_num_write~0 0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (<= ~q_read_ev~0 2) .cse11 (= ~p_dw_st~0 1) .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 (<= 2 ~q_read_ev~0) .cse19 .cse20 (= ~c_last_read~0 ~p_last_write~0) .cse21 .cse22 .cse23 .cse24 .cse25 .cse26) (and (= ~c_dr_st~0 2) .cse3 (<= ~c_num_read~0 ~p_num_write~0) .cse5 (<= ~p_num_write~0 ~c_num_read~0) .cse27 .cse11) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 0 ~p_dw_st~0) .cse6 .cse7 (<= ~p_dw_st~0 2) .cse8 .cse28 .cse9 .cse10 (<= 0 (+ ~q_buf_0~0 2147483648)) .cse11 .cse12 .cse13 (= ~q_read_ev~0 2) .cse14 .cse15 .cse16 .cse17 .cse18 (= ~p_num_write~0 1) .cse19 .cse20 (<= ~p_last_write~0 2147483647) .cse21 .cse22 .cse23 .cse24 .cse25 .cse26) (let ((.cse29 (+ ~c_num_read~0 1))) (and .cse3 .cse28 .cse27 .cse11 (<= .cse29 ~p_num_write~0) (<= ~p_num_write~0 .cse29)))))) [2021-11-23 01:52:31,740 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 113) no Hoare annotation was computed. [2021-11-23 01:52:31,740 INFO L854 garLoopResultBuilder]: At program point L134(line 134) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_free~0 0)) (.cse3 (= ~q_write_ev~0 1))) (or (let ((.cse2 (select |#memory_int| 1))) (and (= ~p_dw_pc~0 0) (= ~c_dr_st~0 0) (= (select |#length| 3) 12) (= ~c_num_read~0 0) (<= ~q_buf_0~0 2147483647) .cse0 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) .cse1 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ ~q_buf_0~0 2147483648)) (= ~p_dw_st~0 1) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (= ~q_read_ev~0 2) (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648)) (= ~c_dr_pc~0 0) (not (= |ULTIMATE.start_eval_~tmp~1#1| 0)) (= ~p_dw_i~0 1) (= (select |#valid| 0) 0) (= ~p_num_write~0 1) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= ~a_t~0 0) (= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= (select .cse2 0) 48) (= (select .cse2 1) 0) .cse3 (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (let ((.cse4 (+ ~c_num_read~0 1))) (and .cse0 .cse1 (= ~c_dr_pc~0 1) (<= .cse4 ~p_num_write~0) (<= ~p_num_write~0 .cse4) .cse3)))) [2021-11-23 01:52:31,741 INFO L858 garLoopResultBuilder]: For program point L134-1(line 134) no Hoare annotation was computed. [2021-11-23 01:52:31,741 INFO L858 garLoopResultBuilder]: For program point errorEXIT(lines 15 22) no Hoare annotation was computed. [2021-11-23 01:52:31,741 INFO L858 garLoopResultBuilder]: For program point errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-23 01:52:31,741 INFO L861 garLoopResultBuilder]: At program point errorENTRY(lines 15 22) the Hoare annotation is: true [2021-11-23 01:52:31,745 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:52:31,747 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 01:52:31,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:52:31 BoogieIcfgContainer [2021-11-23 01:52:31,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 01:52:31,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:52:31,823 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:52:31,823 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:52:31,824 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:35" (3/4) ... [2021-11-23 01:52:31,827 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 01:52:31,834 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure immediate_notify_threads [2021-11-23 01:52:31,834 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure exists_runnable_thread [2021-11-23 01:52:31,835 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure error [2021-11-23 01:52:31,843 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2021-11-23 01:52:31,844 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-23 01:52:31,845 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 01:52:31,845 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 01:52:31,878 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((((((!(a_t == 0) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(#NULL == 0)) || !(p_num_write == 1)) || !(2 == unknown-#length-unknown[1])) || !(c_dr_pc == 0)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(1 <= c_dr_i)) || !(0 <= q_buf_0 + 2147483648)) || !(p_dw_pc == 0)) || !(unknown-#length-unknown[3] == 12)) || !(p_last_write == q_buf_0)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(c_last_read <= 0)) || !(c_num_read == 0)) || !(\valid[1] == 1)) || !(19 == unknown-#length-unknown[2])) || (((__retres1 == 0 && 1 <= p_dw_st) && c_dr_st == \old(c_dr_st)) && p_dw_st <= 1)) || !(q_free <= 0)) || !(#NULL == 0)) || !(c_dr_i <= 1)) || !(\old(p_dw_st) == 1)) || !(q_write_ev == 1)) || !(p_dw_i == 1)) || !(\valid[2] == 1)) || !(0 <= q_free)) || !(p_last_write <= 2147483647)) || !(0 <= c_last_read)) || !(q_read_ev == 2)) || !(\old(c_dr_st) <= 0)) || !(0 <= \old(c_dr_st))) && ((((((((((((((((((((((((((((((((!(a_t == 0) || !(2 <= \old(p_dw_st))) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(\old(p_dw_st) <= 2)) || !(#NULL == 0)) || !(p_num_write == 1)) || !(2 == unknown-#length-unknown[1])) || !(c_dr_pc == 0)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(1 <= c_num_read)) || !(0 <= q_buf_0 + 2147483648)) || !(unknown-#length-unknown[3] == 12)) || !(p_last_write == q_buf_0)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(p_dw_pc == 1)) || !(\valid[1] == 1)) || !(19 == unknown-#length-unknown[2])) || !(#NULL == 0)) || !(q_read_ev <= 1)) || !(q_write_ev == 2)) || !(p_dw_i == 1)) || !(1 <= \old(c_dr_st))) || !(\valid[2] == 1)) || !(q_free == 1)) || !(p_last_write <= 2147483647)) || !(1 <= q_read_ev)) || !(c_last_read == p_last_write)) || ((((__retres1 == 1 && p_dw_st <= 2) && 1 <= c_dr_st) && c_dr_st <= 1) && 2 <= p_dw_st)) || !(\old(c_dr_st) <= 1)) || !(c_num_read <= 1)) || !(1 == c_dr_i))) && ((((((((!(2 <= \old(p_dw_st)) || !(c_num_read <= p_num_write)) || !(p_last_write == q_buf_0)) || !(p_num_write <= c_num_read)) || !(c_dr_pc == 1)) || !(q_write_ev == 2)) || !(q_free == 1)) || 2 <= p_dw_st) || !(c_last_read == p_last_write)) [2021-11-23 01:52:31,879 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((((((((!(a_t == 0) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(#NULL == 0)) || !(p_num_write == 1)) || !(2 == unknown-#length-unknown[1])) || !(c_dr_pc == 0)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(1 <= c_dr_i)) || !(0 <= q_buf_0 + 2147483648)) || !(p_dw_pc == 0)) || !(unknown-#length-unknown[3] == 12)) || !(p_last_write == q_buf_0)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(c_last_read <= 0)) || !(c_num_read == 0)) || !(\valid[1] == 1)) || !(19 == unknown-#length-unknown[2])) || !(q_free <= 0)) || !(#NULL == 0)) || !(c_dr_i <= 1)) || !(\old(p_dw_st) == 1)) || !(q_write_ev == 1)) || !(p_dw_i == 1)) || !(\valid[2] == 1)) || !(0 <= q_free)) || !(p_last_write <= 2147483647)) || (((((\old(p_dw_st) == p_dw_st && __retres1 == 0) && tmp == 0) && c_dr_st == \old(c_dr_st)) && __retres1 == 0) && \result == __retres1)) || !(0 <= c_last_read)) || !(q_read_ev == 2)) || !(\old(c_dr_st) <= 0)) || !(0 <= \old(c_dr_st))) && ((((((((((((((((((((((((((((((((!(a_t == 0) || !(2 <= \old(p_dw_st))) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(\old(p_dw_st) <= 2)) || !(#NULL == 0)) || !(p_num_write == 1)) || !(2 == unknown-#length-unknown[1])) || !(c_dr_pc == 0)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(1 <= c_num_read)) || !(0 <= q_buf_0 + 2147483648)) || !(unknown-#length-unknown[3] == 12)) || !(p_last_write == q_buf_0)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(p_dw_pc == 1)) || !(\valid[1] == 1)) || !(19 == unknown-#length-unknown[2])) || ((((((__retres1 == 1 && tmp == \result) && 1 <= c_dr_st) && __retres1 == 0) && \result == __retres1) && p_dw_st == 0) && c_dr_st <= 1)) || !(#NULL == 0)) || !(q_read_ev <= 1)) || !(q_write_ev == 2)) || !(p_dw_i == 1)) || !(1 <= \old(c_dr_st))) || !(\valid[2] == 1)) || !(q_free == 1)) || !(p_last_write <= 2147483647)) || !(1 <= q_read_ev)) || !(c_last_read == p_last_write)) || !(\old(c_dr_st) <= 1)) || !(c_num_read <= 1)) || !(1 == c_dr_i)) [2021-11-23 01:52:31,940 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 01:52:31,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:52:31,942 INFO L158 Benchmark]: Toolchain (without parser) took 57075.26ms. Allocated memory was 90.2MB in the beginning and 302.0MB in the end (delta: 211.8MB). Free memory was 54.1MB in the beginning and 258.3MB in the end (delta: -204.2MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-11-23 01:52:31,942 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory was 59.8MB in the beginning and 59.8MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:52:31,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.23ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 53.9MB in the beginning and 93.4MB in the end (delta: -39.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2021-11-23 01:52:31,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.63ms. Allocated memory is still 119.5MB. Free memory was 93.4MB in the beginning and 91.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:52:31,944 INFO L158 Benchmark]: Boogie Preprocessor took 32.86ms. Allocated memory is still 119.5MB. Free memory was 91.3MB in the beginning and 90.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:52:31,945 INFO L158 Benchmark]: RCFGBuilder took 633.58ms. Allocated memory is still 119.5MB. Free memory was 90.1MB in the beginning and 72.8MB in the end (delta: 17.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-23 01:52:31,946 INFO L158 Benchmark]: TraceAbstraction took 55839.72ms. Allocated memory was 119.5MB in the beginning and 302.0MB in the end (delta: 182.5MB). Free memory was 72.5MB in the beginning and 264.6MB in the end (delta: -192.2MB). Peak memory consumption was 162.2MB. Max. memory is 16.1GB. [2021-11-23 01:52:31,946 INFO L158 Benchmark]: Witness Printer took 118.23ms. Allocated memory is still 302.0MB. Free memory was 264.6MB in the beginning and 258.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 01:52:31,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory was 59.8MB in the beginning and 59.8MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.23ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 53.9MB in the beginning and 93.4MB in the end (delta: -39.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.63ms. Allocated memory is still 119.5MB. Free memory was 93.4MB in the beginning and 91.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.86ms. Allocated memory is still 119.5MB. Free memory was 91.3MB in the beginning and 90.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 633.58ms. Allocated memory is still 119.5MB. Free memory was 90.1MB in the beginning and 72.8MB in the end (delta: 17.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 55839.72ms. Allocated memory was 119.5MB in the beginning and 302.0MB in the end (delta: 182.5MB). Free memory was 72.5MB in the beginning and 264.6MB in the end (delta: -192.2MB). Peak memory consumption was 162.2MB. Max. memory is 16.1GB. * Witness Printer took 118.23ms. Allocated memory is still 302.0MB. Free memory was 264.6MB in the beginning and 258.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.7s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 775 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 766 mSDsluCounter, 2606 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1857 mSDsCounter, 122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2956 IncrementalHoareTripleChecker+Invalid, 3078 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 122 mSolverCounterUnsat, 942 mSDtfsCounter, 2956 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 671 GetRequests, 512 SyntacticMatches, 21 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 27.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=294occurred in iteration=7, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 281 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 339 PreInvPairs, 411 NumberOfFragments, 3498 HoareAnnotationTreeSize, 339 FomulaSimplifications, 503 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 23 FomulaSimplificationsInter, 15904 FormulaSimplificationTreeSizeReductionInter, 6.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 909 NumberOfCodeBlocks, 909 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1051 ConstructedInterpolants, 0 QuantifiedInterpolants, 3340 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1147 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 21 InterpolantComputations, 10 PerfectInterpolantSequences, 229/304 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: OVERALL_TIME: 6.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 90, DAG_INTERPRETER_EARLY_EXITS: 7, TOOLS_POST_APPLICATIONS: 135, TOOLS_POST_TIME: 2.9s, TOOLS_POST_CALL_APPLICATIONS: 36, TOOLS_POST_CALL_TIME: 1.0s, TOOLS_POST_RETURN_APPLICATIONS: 30, TOOLS_POST_RETURN_TIME: 1.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 192, TOOLS_QUANTIFIERELIM_TIME: 4.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 281, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 36, DOMAIN_JOIN_TIME: 0.8s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 3, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 10, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 90, DOMAIN_ISBOTTOM_TIME: 0.2s, LOOP_SUMMARIZER_APPLICATIONS: 7, LOOP_SUMMARIZER_CACHE_MISSES: 7, LOOP_SUMMARIZER_OVERALL_TIME: 1.9s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.9s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 10, CALL_SUMMARIZER_APPLICATIONS: 30, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 2045, DAG_COMPRESSION_RETAINED_NODES: 238, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((p_dw_pc == 0 && c_dr_st == 0) && p_num_write == 0) && unknown-#length-unknown[3] == 12) && c_num_read == 0) && p_last_write == q_buf_0) && tmp <= 2147483647) && p_last_write == 0) && q_free == 1) && c_last_read == 0) && 1 == c_dr_i) && kernel_st == 1) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && q_read_ev <= 2) && q_write_ev == 2) && p_dw_st == 1) && \valid[1] == 1) && 19 == unknown-#length-unknown[2]) && 0 <= tmp + 2147483648) && c_dr_pc == 0) && !(tmp == 0)) && p_dw_i == 1) && \valid[0] == 0) && 2 <= q_read_ev) && \valid[2] == 1) && #NULL == 0) && a_t == 0) && tmp___1 == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((p_last_write == q_buf_0 && c_num_read <= p_num_write) && p_num_write <= c_num_read) && c_dr_pc == 1) && q_write_ev == 2) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((!(a_t == 0) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(#NULL == 0)) || !(p_num_write == 1)) || !(2 == unknown-#length-unknown[1])) || !(c_dr_pc == 0)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(1 <= c_dr_i)) || !(0 <= q_buf_0 + 2147483648)) || !(p_dw_pc == 0)) || !(unknown-#length-unknown[3] == 12)) || !(p_last_write == q_buf_0)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(c_last_read <= 0)) || !(c_num_read == 0)) || !(\valid[1] == 1)) || !(19 == unknown-#length-unknown[2])) || (((__retres1 == 0 && 1 <= p_dw_st) && c_dr_st == \old(c_dr_st)) && p_dw_st <= 1)) || !(q_free <= 0)) || !(#NULL == 0)) || !(c_dr_i <= 1)) || !(\old(p_dw_st) == 1)) || !(q_write_ev == 1)) || !(p_dw_i == 1)) || !(\valid[2] == 1)) || !(0 <= q_free)) || !(p_last_write <= 2147483647)) || !(0 <= c_last_read)) || !(q_read_ev == 2)) || !(\old(c_dr_st) <= 0)) || !(0 <= \old(c_dr_st))) && ((((((((((((((((((((((((((((((((!(a_t == 0) || !(2 <= \old(p_dw_st))) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(\old(p_dw_st) <= 2)) || !(#NULL == 0)) || !(p_num_write == 1)) || !(2 == unknown-#length-unknown[1])) || !(c_dr_pc == 0)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(1 <= c_num_read)) || !(0 <= q_buf_0 + 2147483648)) || !(unknown-#length-unknown[3] == 12)) || !(p_last_write == q_buf_0)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(p_dw_pc == 1)) || !(\valid[1] == 1)) || !(19 == unknown-#length-unknown[2])) || !(#NULL == 0)) || !(q_read_ev <= 1)) || !(q_write_ev == 2)) || !(p_dw_i == 1)) || !(1 <= \old(c_dr_st))) || !(\valid[2] == 1)) || !(q_free == 1)) || !(p_last_write <= 2147483647)) || !(1 <= q_read_ev)) || !(c_last_read == p_last_write)) || ((((__retres1 == 1 && p_dw_st <= 2) && 1 <= c_dr_st) && c_dr_st <= 1) && 2 <= p_dw_st)) || !(\old(c_dr_st) <= 1)) || !(c_num_read <= 1)) || !(1 == c_dr_i))) && ((((((((!(2 <= \old(p_dw_st)) || !(c_num_read <= p_num_write)) || !(p_last_write == q_buf_0)) || !(p_num_write <= c_num_read)) || !(c_dr_pc == 1)) || !(q_write_ev == 2)) || !(q_free == 1)) || 2 <= p_dw_st) || !(c_last_read == p_last_write)) - InvariantResult [Line: 323]: Loop Invariant Derived loop invariant: ((((((c_dr_st == 2 && p_last_write == q_buf_0) && q_free == 1) && 2 <= p_dw_st) || (((((((((((((((((((((((((0 <= q_free && c_num_read == 0) && p_dw_pc <= 1) && p_last_write == q_buf_0) && 0 <= p_dw_pc) && c_last_read == 0) && 0 <= p_num_write) && 1 == c_dr_i) && p_dw_st <= 2) && kernel_st == 1) && p_num_write <= 1) && q_read_ev <= 2) && tmp___1 <= 1) && 0 <= q_buf_0 + 2147483648) && q_write_ev == 2) && q_free <= 1) && c_dr_pc == 0) && p_dw_i == 1) && 2 <= q_read_ev) && #NULL == 0) && p_last_write <= 2147483647) && 0 <= tmp___1) && a_t == 0) && 2 <= p_dw_st) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((c_dr_st == 2 && p_last_write == q_buf_0) && c_num_read <= p_num_write) && q_free == 1) && p_num_write <= c_num_read) && c_dr_pc == 1) && q_write_ev == 2)) || ((((((p_last_write == q_buf_0 && q_free == 0) && c_dr_pc == 1) && q_write_ev == 2) && c_num_read + 1 <= p_num_write) && 2 <= p_dw_st) && p_num_write <= c_num_read + 1)) || (((((((((((((((((((((((((((p_dw_pc == 0 && c_dr_st == 0) && p_num_write == 0) && unknown-#length-unknown[3] == 12) && c_num_read == 0) && p_last_write == q_buf_0) && kernel_st == 0) && q_write_ev == q_read_ev) && q_free == 1) && c_last_read == 0) && 1 == c_dr_i) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && q_write_ev == 2) && p_dw_st == 0) && \valid[1] == 1) && 19 == unknown-#length-unknown[2]) && c_dr_pc == 0) && p_dw_i == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && c_last_read == p_last_write) && a_t == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((!(a_t == 0) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(#NULL == 0)) || !(p_num_write == 1)) || !(2 == unknown-#length-unknown[1])) || !(c_dr_pc == 0)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(1 <= c_dr_i)) || !(0 <= q_buf_0 + 2147483648)) || !(p_dw_pc == 0)) || !(unknown-#length-unknown[3] == 12)) || !(p_last_write == q_buf_0)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(c_last_read <= 0)) || !(c_num_read == 0)) || !(\valid[1] == 1)) || !(19 == unknown-#length-unknown[2])) || !(q_free <= 0)) || !(#NULL == 0)) || !(c_dr_i <= 1)) || !(\old(p_dw_st) == 1)) || !(q_write_ev == 1)) || !(p_dw_i == 1)) || !(\valid[2] == 1)) || !(0 <= q_free)) || !(p_last_write <= 2147483647)) || (((((\old(p_dw_st) == p_dw_st && __retres1 == 0) && tmp == 0) && c_dr_st == \old(c_dr_st)) && __retres1 == 0) && \result == __retres1)) || !(0 <= c_last_read)) || !(q_read_ev == 2)) || !(\old(c_dr_st) <= 0)) || !(0 <= \old(c_dr_st))) && ((((((((((((((((((((((((((((((((!(a_t == 0) || !(2 <= \old(p_dw_st))) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(\old(p_dw_st) <= 2)) || !(#NULL == 0)) || !(p_num_write == 1)) || !(2 == unknown-#length-unknown[1])) || !(c_dr_pc == 0)) || !(0 < unknown-#StackHeapBarrier-unknown)) || !(\valid[3] == 1)) || !(1 <= c_num_read)) || !(0 <= q_buf_0 + 2147483648)) || !(unknown-#length-unknown[3] == 12)) || !(p_last_write == q_buf_0)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(p_dw_pc == 1)) || !(\valid[1] == 1)) || !(19 == unknown-#length-unknown[2])) || ((((((__retres1 == 1 && tmp == \result) && 1 <= c_dr_st) && __retres1 == 0) && \result == __retres1) && p_dw_st == 0) && c_dr_st <= 1)) || !(#NULL == 0)) || !(q_read_ev <= 1)) || !(q_write_ev == 2)) || !(p_dw_i == 1)) || !(1 <= \old(c_dr_st))) || !(\valid[2] == 1)) || !(q_free == 1)) || !(p_last_write <= 2147483647)) || !(1 <= q_read_ev)) || !(c_last_read == p_last_write)) || !(\old(c_dr_st) <= 1)) || !(c_num_read <= 1)) || !(1 == c_dr_i)) - InvariantResult [Line: 313]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 247]: Loop Invariant Derived loop invariant: ((((((c_dr_st == 2 && p_last_write == q_buf_0) && q_free == 1) && 2 <= p_dw_st) || ((((((((((((((((((((((((((((((((((((((((((((p_last_write <= 0 && 1 <= p_dw_i) && 1 <= q_free) && 1 <= kernel_st) && unknown-#length-unknown[3] == 12) && p_num_write <= 0) && c_dr_st <= 0) && 0 <= q_buf_0) && 0 <= #NULL) && kernel_st <= 1) && 1 <= c_dr_i) && 0 <= c_dr_pc) && c_num_read <= 0) && c_last_read <= 0) && 0 <= p_last_write) && p_dw_pc <= 0) && c_dr_i <= 1) && 0 <= p_dw_pc) && 0 <= p_num_write) && a_t <= 0) && 2 <= q_write_ev) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && #NULL <= 0) && p_dw_i <= 1) && 0 <= c_dr_st) && q_read_ev <= 2) && q_free <= 1) && q_write_ev <= 2) && p_dw_st == 0) && \valid[1] == 1) && 19 == unknown-#length-unknown[2]) && 0 <= a_t) && #NULL <= 0) && \valid[0] == 0) && 2 <= q_read_ev) && \valid[2] == 1) && c_dr_pc <= 0) && unknown-#memory_int-unknown[1][0] == 48) && 0 <= #NULL) && unknown-#memory_int-unknown[1][1] == 0) && 0 <= c_num_read) && q_buf_0 <= 0) && 0 <= c_last_read) && 0 < unknown-#StackHeapBarrier-unknown)) || ((((((c_dr_st == 2 && p_last_write == q_buf_0) && c_num_read <= p_num_write) && q_free == 1) && p_num_write <= c_num_read) && c_dr_pc == 1) && q_write_ev == 2)) || (((((((((((((((((((((((0 <= q_free && c_num_read == 0) && p_dw_pc <= 1) && p_last_write == q_buf_0) && 0 <= p_dw_pc) && c_last_read == 0) && 0 <= p_num_write) && 1 == c_dr_i) && p_dw_st <= 2) && kernel_st == 1) && p_num_write <= 1) && q_read_ev <= 2) && 0 <= q_buf_0 + 2147483648) && q_write_ev == 2) && q_free <= 1) && c_dr_pc == 0) && p_dw_i == 1) && 2 <= q_read_ev) && #NULL == 0) && p_last_write <= 2147483647) && a_t == 0) && 2 <= p_dw_st) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((p_last_write == q_buf_0 && q_free == 0) && c_dr_pc == 1) && q_write_ev == 2) && c_num_read + 1 <= p_num_write) && 2 <= p_dw_st) && p_num_write <= c_num_read + 1) - InvariantResult [Line: 240]: Loop Invariant Derived loop invariant: (((((c_dr_st == 2 && p_last_write == q_buf_0) && q_free == 1) && 2 <= p_dw_st) || (((((((((((((((((((((((((0 <= q_free && c_num_read == 0) && p_dw_pc <= 1) && p_last_write == q_buf_0) && 0 <= p_dw_pc) && c_last_read == 0) && 0 <= p_num_write) && 1 == c_dr_i) && p_dw_st <= 2) && kernel_st == 1) && p_num_write <= 1) && q_read_ev <= 2) && tmp___1 <= 1) && 0 <= q_buf_0 + 2147483648) && q_write_ev == 2) && q_free <= 1) && c_dr_pc == 0) && p_dw_i == 1) && 2 <= q_read_ev) && #NULL == 0) && p_last_write <= 2147483647) && 0 <= tmp___1) && a_t == 0) && 2 <= p_dw_st) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((c_dr_st == 2 && p_last_write == q_buf_0) && c_num_read <= p_num_write) && q_free == 1) && p_num_write <= c_num_read) && c_dr_pc == 1) && q_write_ev == 2)) || ((((((p_last_write == q_buf_0 && q_free == 0) && c_dr_pc == 1) && q_write_ev == 2) && c_num_read + 1 <= p_num_write) && 2 <= p_dw_st) && p_num_write <= c_num_read + 1) - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((p_dw_pc == 0 && c_dr_st == 0) && p_num_write == 0) && unknown-#length-unknown[3] == 12) && c_num_read == 0) && p_last_write == q_buf_0) && tmp <= 2147483647) && q_free == 1) && c_last_read == 0) && 1 == c_dr_i) && kernel_st == 1) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && q_read_ev <= 2) && q_write_ev == 2) && p_dw_st == 1) && \valid[1] == 1) && 19 == unknown-#length-unknown[2]) && 0 <= tmp + 2147483648) && c_dr_pc == 0) && !(tmp == 0)) && p_dw_i == 1) && \valid[0] == 0) && 2 <= q_read_ev) && \valid[2] == 1) && #NULL == 0) && c_last_read == p_last_write) && a_t == 0) && tmp___1 == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((c_dr_st == 2 && p_last_write == q_buf_0) && c_num_read <= p_num_write) && q_free == 1) && p_num_write <= c_num_read) && c_dr_pc == 1) && q_write_ev == 2)) || ((((((((((((((((((((((((((((((((p_dw_pc == 0 && unknown-#length-unknown[3] == 12) && c_num_read == 0) && p_last_write == q_buf_0) && tmp <= 2147483647) && 0 <= p_dw_st) && c_last_read == 0) && 1 == c_dr_i) && p_dw_st <= 2) && kernel_st == 1) && q_free == 0) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 0 <= q_buf_0 + 2147483648) && q_write_ev == 2) && \valid[1] == 1) && 19 == unknown-#length-unknown[2]) && q_read_ev == 2) && 0 <= tmp + 2147483648) && c_dr_pc == 0) && !(tmp == 0)) && p_dw_i == 1) && \valid[0] == 0) && p_num_write == 1) && \valid[2] == 1) && #NULL == 0) && p_last_write <= 2147483647) && a_t == 0) && tmp___1 == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((p_last_write == q_buf_0 && q_free == 0) && c_dr_pc == 1) && q_write_ev == 2) && c_num_read + 1 <= p_num_write) && p_num_write <= c_num_read + 1) - InvariantResult [Line: 148]: Loop Invariant Derived loop invariant: (((((p_last_write == q_buf_0 && c_num_read <= p_num_write) && q_free == 1) && p_num_write <= c_num_read) && q_write_ev == 2) && c_last_read == p_last_write) || (((((((((((((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && c_num_read == 0) && !(tmp___0 == 0)) && p_last_write == q_buf_0) && tmp <= 2147483647) && 0 <= tmp___0 + 2147483648) && c_last_read == 0) && 1 == c_dr_i) && kernel_st == 1) && q_free == 0) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && tmp___0 <= 2147483647) && 0 <= q_buf_0 + 2147483648) && p_dw_pc == 1) && q_write_ev == 2) && \valid[1] == 1) && 19 == unknown-#length-unknown[2]) && q_read_ev == 2) && 0 <= tmp + 2147483648) && c_dr_pc == 0) && !(tmp == 0)) && 2 == p_dw_st) && p_dw_i == 1) && \valid[0] == 0) && p_num_write == 1) && \valid[2] == 1) && #NULL == 0) && p_last_write <= 2147483647) && a_t == 0) && tmp___1 == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && c_dr_st == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: ((((((p_last_write == q_buf_0 && q_free == 0) && c_dr_pc == 1) && q_write_ev == 2) && c_num_read + 1 <= p_num_write) && 2 <= p_dw_st) && p_num_write <= c_num_read + 1) || ((((((((((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && p_last_write == q_buf_0) && tmp <= 2147483647) && c_num_read <= 0) && c_last_read == 0) && 1 == c_dr_i) && kernel_st == 1) && q_free == 0) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 0 <= q_buf_0 + 2147483648) && p_dw_pc == 1) && q_write_ev == 2) && \valid[1] == 1) && 19 == unknown-#length-unknown[2]) && q_read_ev == 2) && 0 <= tmp + 2147483648) && c_dr_pc == 0) && !(tmp == 0)) && 2 == p_dw_st) && p_dw_i == 1) && \valid[0] == 0) && p_num_write == 1) && \valid[2] == 1) && #NULL == 0) && p_last_write <= 2147483647) && a_t == 0) && tmp___1 == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 <= c_num_read) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 300]: Loop Invariant Derived loop invariant: (((((c_dr_st == 2 && p_last_write == q_buf_0) && q_free == 1) && 2 <= p_dw_st) || (((((((((((((((((((((((((0 <= q_free && c_num_read == 0) && p_dw_pc <= 1) && p_last_write == q_buf_0) && 0 <= p_dw_pc) && c_last_read == 0) && 0 <= p_num_write) && 1 == c_dr_i) && p_dw_st <= 2) && kernel_st == 1) && p_num_write <= 1) && q_read_ev <= 2) && tmp___1 <= 1) && 0 <= q_buf_0 + 2147483648) && q_write_ev == 2) && q_free <= 1) && c_dr_pc == 0) && p_dw_i == 1) && 2 <= q_read_ev) && #NULL == 0) && p_last_write <= 2147483647) && 0 <= tmp___1) && a_t == 0) && 2 <= p_dw_st) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((c_dr_st == 2 && p_last_write == q_buf_0) && c_num_read <= p_num_write) && q_free == 1) && p_num_write <= c_num_read) && c_dr_pc == 1) && q_write_ev == 2)) || ((((((p_last_write == q_buf_0 && q_free == 0) && c_dr_pc == 1) && q_write_ev == 2) && c_num_read + 1 <= p_num_write) && 2 <= p_dw_st) && p_num_write <= c_num_read + 1) - InvariantResult [Line: 152]: Loop Invariant Derived loop invariant: (((((p_last_write == q_buf_0 && q_free == 0) && c_dr_pc == 1) && q_write_ev == 2) && c_num_read + 1 <= p_num_write) && 2 <= p_dw_st) && p_num_write <= c_num_read + 1 - InvariantResult [Line: 145]: Loop Invariant Derived loop invariant: (((c_dr_st == 2 && p_last_write == q_buf_0) && q_free == 1) && 2 <= p_dw_st) || ((((((c_dr_st == 2 && p_last_write == q_buf_0) && c_num_read <= p_num_write) && q_free == 1) && p_num_write <= c_num_read) && c_dr_pc == 1) && q_write_ev == 2) - InvariantResult [Line: 220]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-23 01:52:32,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a76e1d1-032b-4dc3-acd8-8b4feb5ea871/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE