./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87e1d1b45ecae6206db87e264fd33705b608c5376aceaefe9ff79eccaaf25b96 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:57:14,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:57:14,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:57:14,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:57:14,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:57:14,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:57:14,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:57:14,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:57:14,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:57:14,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:57:14,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:57:14,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:57:14,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:57:14,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:57:14,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:57:14,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:57:14,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:57:14,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:57:14,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:57:14,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:57:14,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:57:14,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:57:14,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:57:14,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:57:14,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:57:14,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:57:14,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:57:14,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:57:14,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:57:14,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:57:14,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:57:14,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:57:14,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:57:14,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:57:14,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:57:14,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:57:14,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:57:14,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:57:14,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:57:14,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:57:14,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:57:14,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:57:14,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:57:14,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:57:14,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:57:14,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:57:14,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:57:14,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:57:14,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:57:14,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:57:14,476 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:57:14,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:57:14,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:57:14,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:57:14,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:57:14,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:57:14,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:57:14,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:57:14,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:57:14,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:57:14,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:57:14,478 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:57:14,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:57:14,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:57:14,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:57:14,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:57:14,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:57:14,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:57:14,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:57:14,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:57:14,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:57:14,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:57:14,480 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:57:14,480 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:57:14,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:57:14,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:57:14,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87e1d1b45ecae6206db87e264fd33705b608c5376aceaefe9ff79eccaaf25b96 [2021-12-06 23:57:14,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:57:14,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:57:14,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:57:14,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:57:14,675 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:57:14,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2021-12-06 23:57:14,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/data/b48553602/168893310ce940fd86b27618db99b257/FLAG30ada9d4e [2021-12-06 23:57:15,123 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:57:15,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2021-12-06 23:57:15,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/data/b48553602/168893310ce940fd86b27618db99b257/FLAG30ada9d4e [2021-12-06 23:57:15,142 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/data/b48553602/168893310ce940fd86b27618db99b257 [2021-12-06 23:57:15,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:57:15,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:57:15,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:57:15,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:57:15,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:57:15,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:57:15" (1/1) ... [2021-12-06 23:57:15,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4008c5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15, skipping insertion in model container [2021-12-06 23:57:15,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:57:15" (1/1) ... [2021-12-06 23:57:15,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:57:15,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:57:15,379 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_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c[15496,15509] [2021-12-06 23:57:15,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:57:15,398 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:57:15,440 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_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c[15496,15509] [2021-12-06 23:57:15,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:57:15,460 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:57:15,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15 WrapperNode [2021-12-06 23:57:15,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:57:15,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:57:15,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:57:15,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:57:15,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15" (1/1) ... [2021-12-06 23:57:15,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15" (1/1) ... [2021-12-06 23:57:15,498 INFO L137 Inliner]: procedures = 54, calls = 155, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 254 [2021-12-06 23:57:15,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:57:15,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:57:15,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:57:15,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:57:15,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15" (1/1) ... [2021-12-06 23:57:15,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15" (1/1) ... [2021-12-06 23:57:15,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15" (1/1) ... [2021-12-06 23:57:15,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15" (1/1) ... [2021-12-06 23:57:15,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15" (1/1) ... [2021-12-06 23:57:15,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15" (1/1) ... [2021-12-06 23:57:15,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15" (1/1) ... [2021-12-06 23:57:15,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:57:15,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:57:15,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:57:15,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:57:15,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15" (1/1) ... [2021-12-06 23:57:15,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:57:15,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:15,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:57:15,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:57:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:57:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-06 23:57:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-06 23:57:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-06 23:57:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-06 23:57:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-06 23:57:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-06 23:57:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-12-06 23:57:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-12-06 23:57:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-06 23:57:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-06 23:57:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-12-06 23:57:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-12-06 23:57:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:57:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-06 23:57:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-06 23:57:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:57:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:57:15,628 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:57:15,630 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:57:15,857 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:57:15,864 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:57:15,864 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 23:57:15,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:57:15 BoogieIcfgContainer [2021-12-06 23:57:15,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:57:15,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:57:15,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:57:15,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:57:15,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:57:15" (1/3) ... [2021-12-06 23:57:15,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1ac89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:57:15, skipping insertion in model container [2021-12-06 23:57:15,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:57:15" (2/3) ... [2021-12-06 23:57:15,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1ac89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:57:15, skipping insertion in model container [2021-12-06 23:57:15,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:57:15" (3/3) ... [2021-12-06 23:57:15,874 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2021-12-06 23:57:15,879 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:57:15,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:57:15,922 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:57:15,927 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=PETRI_NET, 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 [2021-12-06 23:57:15,927 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:57:15,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 66 states have (on average 1.393939393939394) internal successors, (92), 75 states have internal predecessors, (92), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-06 23:57:15,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 23:57:15,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:15,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:15,949 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:15,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:15,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1733768608, now seen corresponding path program 1 times [2021-12-06 23:57:15,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:15,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291978850] [2021-12-06 23:57:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:15,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:16,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:16,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291978850] [2021-12-06 23:57:16,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291978850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:16,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:16,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:57:16,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758536852] [2021-12-06 23:57:16,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:16,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:57:16,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:16,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:57:16,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:57:16,162 INFO L87 Difference]: Start difference. First operand has 87 states, 66 states have (on average 1.393939393939394) internal successors, (92), 75 states have internal predecessors, (92), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:16,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:16,199 INFO L93 Difference]: Finished difference Result 166 states and 227 transitions. [2021-12-06 23:57:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:57:16,201 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 23:57:16,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:16,207 INFO L225 Difference]: With dead ends: 166 [2021-12-06 23:57:16,208 INFO L226 Difference]: Without dead ends: 78 [2021-12-06 23:57:16,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:57:16,213 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:16,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:57:16,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-06 23:57:16,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-12-06 23:57:16,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 67 states have internal predecessors, (78), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 23:57:16,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2021-12-06 23:57:16,245 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 19 [2021-12-06 23:57:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:16,245 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2021-12-06 23:57:16,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2021-12-06 23:57:16,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 23:57:16,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:16,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:16,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:57:16,248 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:16,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:16,248 INFO L85 PathProgramCache]: Analyzing trace with hash -785386082, now seen corresponding path program 1 times [2021-12-06 23:57:16,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:16,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779784084] [2021-12-06 23:57:16,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:16,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:16,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:16,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779784084] [2021-12-06 23:57:16,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779784084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:16,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:16,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:57:16,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869971066] [2021-12-06 23:57:16,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:16,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:57:16,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:16,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:57:16,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:57:16,300 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:16,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:16,312 INFO L93 Difference]: Finished difference Result 118 states and 152 transitions. [2021-12-06 23:57:16,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:57:16,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 23:57:16,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:16,314 INFO L225 Difference]: With dead ends: 118 [2021-12-06 23:57:16,314 INFO L226 Difference]: Without dead ends: 69 [2021-12-06 23:57:16,314 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 [2021-12-06 23:57:16,315 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 16 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:16,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 155 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:57:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-06 23:57:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-12-06 23:57:16,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 61 states have internal predecessors, (71), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 23:57:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2021-12-06 23:57:16,324 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 20 [2021-12-06 23:57:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:16,324 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2021-12-06 23:57:16,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2021-12-06 23:57:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 23:57:16,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:16,325 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] [2021-12-06 23:57:16,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:57:16,325 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:16,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:16,326 INFO L85 PathProgramCache]: Analyzing trace with hash -518838954, now seen corresponding path program 1 times [2021-12-06 23:57:16,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:16,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736678254] [2021-12-06 23:57:16,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:16,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:16,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:16,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736678254] [2021-12-06 23:57:16,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736678254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:16,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:16,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:57:16,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696368612] [2021-12-06 23:57:16,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:16,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:57:16,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:16,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:57:16,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:57:16,389 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:16,506 INFO L93 Difference]: Finished difference Result 230 states and 304 transitions. [2021-12-06 23:57:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:57:16,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 23:57:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:16,508 INFO L225 Difference]: With dead ends: 230 [2021-12-06 23:57:16,509 INFO L226 Difference]: Without dead ends: 168 [2021-12-06 23:57:16,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:57:16,510 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 239 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:16,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 397 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:57:16,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-06 23:57:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2021-12-06 23:57:16,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 123 states have (on average 1.3739837398373984) internal successors, (169), 141 states have internal predecessors, (169), 22 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (23), 14 states have call predecessors, (23), 22 states have call successors, (23) [2021-12-06 23:57:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 214 transitions. [2021-12-06 23:57:16,531 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 214 transitions. Word has length 24 [2021-12-06 23:57:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:16,531 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 214 transitions. [2021-12-06 23:57:16,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 214 transitions. [2021-12-06 23:57:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 23:57:16,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:16,532 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] [2021-12-06 23:57:16,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:57:16,533 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:16,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:16,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1131364876, now seen corresponding path program 1 times [2021-12-06 23:57:16,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:16,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963216165] [2021-12-06 23:57:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:16,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:16,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:16,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963216165] [2021-12-06 23:57:16,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963216165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:16,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:16,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:57:16,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491879811] [2021-12-06 23:57:16,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:16,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:57:16,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:57:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:57:16,586 INFO L87 Difference]: Start difference. First operand 162 states and 214 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:16,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:16,633 INFO L93 Difference]: Finished difference Result 455 states and 627 transitions. [2021-12-06 23:57:16,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:57:16,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 23:57:16,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:16,636 INFO L225 Difference]: With dead ends: 455 [2021-12-06 23:57:16,636 INFO L226 Difference]: Without dead ends: 300 [2021-12-06 23:57:16,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:57:16,639 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 60 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:16,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 353 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:57:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-06 23:57:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-12-06 23:57:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 226 states have (on average 1.345132743362832) internal successors, (304), 258 states have internal predecessors, (304), 44 states have call successors, (44), 32 states have call predecessors, (44), 29 states have return successors, (50), 25 states have call predecessors, (50), 44 states have call successors, (50) [2021-12-06 23:57:16,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 398 transitions. [2021-12-06 23:57:16,678 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 398 transitions. Word has length 28 [2021-12-06 23:57:16,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:16,679 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 398 transitions. [2021-12-06 23:57:16,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:16,679 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 398 transitions. [2021-12-06 23:57:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 23:57:16,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:16,682 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, 1] [2021-12-06 23:57:16,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:57:16,683 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:16,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:16,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2013490001, now seen corresponding path program 1 times [2021-12-06 23:57:16,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:16,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193147487] [2021-12-06 23:57:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:16,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:16,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:16,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193147487] [2021-12-06 23:57:16,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193147487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:16,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:16,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:57:16,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611065257] [2021-12-06 23:57:16,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:16,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:57:16,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:16,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:57:16,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:57:16,730 INFO L87 Difference]: Start difference. First operand 300 states and 398 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:16,773 INFO L93 Difference]: Finished difference Result 700 states and 957 transitions. [2021-12-06 23:57:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:57:16,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 23:57:16,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:16,778 INFO L225 Difference]: With dead ends: 700 [2021-12-06 23:57:16,778 INFO L226 Difference]: Without dead ends: 407 [2021-12-06 23:57:16,781 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 [2021-12-06 23:57:16,782 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 51 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:16,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 146 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:57:16,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-12-06 23:57:16,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 396. [2021-12-06 23:57:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 306 states have (on average 1.3006535947712419) internal successors, (398), 329 states have internal predecessors, (398), 47 states have call successors, (47), 45 states have call predecessors, (47), 42 states have return successors, (69), 41 states have call predecessors, (69), 47 states have call successors, (69) [2021-12-06 23:57:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 514 transitions. [2021-12-06 23:57:16,826 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 514 transitions. Word has length 30 [2021-12-06 23:57:16,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:16,826 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 514 transitions. [2021-12-06 23:57:16,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:57:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 514 transitions. [2021-12-06 23:57:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 23:57:16,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:16,828 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, 1, 1, 1] [2021-12-06 23:57:16,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:57:16,829 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:16,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1816512334, now seen corresponding path program 1 times [2021-12-06 23:57:16,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:16,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304257551] [2021-12-06 23:57:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:16,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:16,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:57:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:16,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:16,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:16,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304257551] [2021-12-06 23:57:16,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304257551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:16,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:16,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:57:16,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35423142] [2021-12-06 23:57:16,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:16,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:57:16,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:16,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:57:16,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:57:16,892 INFO L87 Difference]: Start difference. First operand 396 states and 514 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:57:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:17,046 INFO L93 Difference]: Finished difference Result 491 states and 639 transitions. [2021-12-06 23:57:17,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:57:17,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-06 23:57:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:17,052 INFO L225 Difference]: With dead ends: 491 [2021-12-06 23:57:17,052 INFO L226 Difference]: Without dead ends: 489 [2021-12-06 23:57:17,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:57:17,054 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 121 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:17,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 379 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:57:17,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-12-06 23:57:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 460. [2021-12-06 23:57:17,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 355 states have (on average 1.2788732394366198) internal successors, (454), 389 states have internal predecessors, (454), 53 states have call successors, (53), 45 states have call predecessors, (53), 51 states have return successors, (88), 45 states have call predecessors, (88), 53 states have call successors, (88) [2021-12-06 23:57:17,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 595 transitions. [2021-12-06 23:57:17,098 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 595 transitions. Word has length 32 [2021-12-06 23:57:17,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:17,098 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 595 transitions. [2021-12-06 23:57:17,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:57:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 595 transitions. [2021-12-06 23:57:17,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 23:57:17,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:17,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:17,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:57:17,101 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:17,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:17,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1551163105, now seen corresponding path program 1 times [2021-12-06 23:57:17,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:17,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664766661] [2021-12-06 23:57:17,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:17,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:57:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:17,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 23:57:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:17,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:17,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664766661] [2021-12-06 23:57:17,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664766661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:17,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:17,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:57:17,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215297620] [2021-12-06 23:57:17,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:17,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:57:17,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:17,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:57:17,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:57:17,164 INFO L87 Difference]: Start difference. First operand 460 states and 595 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 23:57:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:17,327 INFO L93 Difference]: Finished difference Result 1019 states and 1342 transitions. [2021-12-06 23:57:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:57:17,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2021-12-06 23:57:17,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:17,332 INFO L225 Difference]: With dead ends: 1019 [2021-12-06 23:57:17,332 INFO L226 Difference]: Without dead ends: 566 [2021-12-06 23:57:17,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:57:17,335 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 121 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:17,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 355 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:57:17,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-12-06 23:57:17,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 512. [2021-12-06 23:57:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 401 states have (on average 1.2618453865336658) internal successors, (506), 435 states have internal predecessors, (506), 53 states have call successors, (53), 45 states have call predecessors, (53), 57 states have return successors, (96), 49 states have call predecessors, (96), 53 states have call successors, (96) [2021-12-06 23:57:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 655 transitions. [2021-12-06 23:57:17,375 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 655 transitions. Word has length 42 [2021-12-06 23:57:17,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:17,375 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 655 transitions. [2021-12-06 23:57:17,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 23:57:17,375 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 655 transitions. [2021-12-06 23:57:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 23:57:17,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:17,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:17,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:57:17,377 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:17,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:17,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1732686941, now seen corresponding path program 1 times [2021-12-06 23:57:17,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:17,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403281477] [2021-12-06 23:57:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:17,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:57:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:17,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 23:57:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:17,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:17,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403281477] [2021-12-06 23:57:17,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403281477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:17,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:17,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:57:17,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416419668] [2021-12-06 23:57:17,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:17,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:57:17,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:17,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:57:17,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:57:17,433 INFO L87 Difference]: Start difference. First operand 512 states and 655 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 23:57:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:17,617 INFO L93 Difference]: Finished difference Result 1014 states and 1335 transitions. [2021-12-06 23:57:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:57:17,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2021-12-06 23:57:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:17,620 INFO L225 Difference]: With dead ends: 1014 [2021-12-06 23:57:17,621 INFO L226 Difference]: Without dead ends: 509 [2021-12-06 23:57:17,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:57:17,623 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 180 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:17,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 344 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:57:17,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-12-06 23:57:17,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 407. [2021-12-06 23:57:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 318 states have (on average 1.2578616352201257) internal successors, (400), 345 states have internal predecessors, (400), 44 states have call successors, (44), 38 states have call predecessors, (44), 44 states have return successors, (70), 38 states have call predecessors, (70), 44 states have call successors, (70) [2021-12-06 23:57:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 514 transitions. [2021-12-06 23:57:17,650 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 514 transitions. Word has length 42 [2021-12-06 23:57:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:17,650 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 514 transitions. [2021-12-06 23:57:17,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 23:57:17,650 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 514 transitions. [2021-12-06 23:57:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 23:57:17,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:17,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:17,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:57:17,652 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:17,653 INFO L85 PathProgramCache]: Analyzing trace with hash 711618587, now seen corresponding path program 1 times [2021-12-06 23:57:17,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:17,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246106156] [2021-12-06 23:57:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:17,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:17,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:57:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:17,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 23:57:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:17,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:17,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246106156] [2021-12-06 23:57:17,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246106156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:57:17,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:57:17,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:57:17,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927255139] [2021-12-06 23:57:17,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:57:17,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:57:17,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:17,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:57:17,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:57:17,706 INFO L87 Difference]: Start difference. First operand 407 states and 514 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 23:57:17,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:17,960 INFO L93 Difference]: Finished difference Result 935 states and 1256 transitions. [2021-12-06 23:57:17,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 23:57:17,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2021-12-06 23:57:17,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:17,965 INFO L225 Difference]: With dead ends: 935 [2021-12-06 23:57:17,965 INFO L226 Difference]: Without dead ends: 642 [2021-12-06 23:57:17,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-12-06 23:57:17,968 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 190 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:17,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 470 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:57:17,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-12-06 23:57:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 617. [2021-12-06 23:57:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 483 states have (on average 1.2339544513457557) internal successors, (596), 518 states have internal predecessors, (596), 66 states have call successors, (66), 58 states have call predecessors, (66), 67 states have return successors, (131), 66 states have call predecessors, (131), 66 states have call successors, (131) [2021-12-06 23:57:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 793 transitions. [2021-12-06 23:57:18,011 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 793 transitions. Word has length 42 [2021-12-06 23:57:18,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:18,011 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 793 transitions. [2021-12-06 23:57:18,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 23:57:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 793 transitions. [2021-12-06 23:57:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 23:57:18,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:18,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:18,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:57:18,014 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:18,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1928338098, now seen corresponding path program 1 times [2021-12-06 23:57:18,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:18,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306548542] [2021-12-06 23:57:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:18,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:57:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 23:57:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:57:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:18,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 23:57:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:57:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:57:18,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:57:18,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306548542] [2021-12-06 23:57:18,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306548542] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:57:18,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166952999] [2021-12-06 23:57:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:18,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:57:18,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:57:18,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:57:18,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:57:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:57:18,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:57:18,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:57:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:57:18,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:57:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:57:18,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166952999] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:57:18,442 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:57:18,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2021-12-06 23:57:18,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68508497] [2021-12-06 23:57:18,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:57:18,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:57:18,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:57:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:57:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:57:18,444 INFO L87 Difference]: Start difference. First operand 617 states and 793 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:57:18,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:57:18,849 INFO L93 Difference]: Finished difference Result 1472 states and 1997 transitions. [2021-12-06 23:57:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 23:57:18,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2021-12-06 23:57:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:57:18,855 INFO L225 Difference]: With dead ends: 1472 [2021-12-06 23:57:18,855 INFO L226 Difference]: Without dead ends: 969 [2021-12-06 23:57:18,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 160 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2021-12-06 23:57:18,858 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 315 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:57:18,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 558 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:57:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-12-06 23:57:18,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 840. [2021-12-06 23:57:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 650 states have (on average 1.24) internal successors, (806), 701 states have internal predecessors, (806), 95 states have call successors, (95), 83 states have call predecessors, (95), 94 states have return successors, (198), 87 states have call predecessors, (198), 95 states have call successors, (198) [2021-12-06 23:57:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1099 transitions. [2021-12-06 23:57:18,910 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1099 transitions. Word has length 74 [2021-12-06 23:57:18,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:57:18,910 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1099 transitions. [2021-12-06 23:57:18,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:57:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1099 transitions. [2021-12-06 23:57:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 23:57:18,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:57:18,914 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1] [2021-12-06 23:57:18,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:57:19,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 23:57:19,116 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:57:19,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:57:19,117 INFO L85 PathProgramCache]: Analyzing trace with hash -962867583, now seen corresponding path program 2 times [2021-12-06 23:57:19,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:57:19,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829044317] [2021-12-06 23:57:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:57:19,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:57:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:57:19,185 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:57:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:57:19,283 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:57:19,283 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:57:19,284 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 23:57:19,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 23:57:19,288 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:57:19,291 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:57:19,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:57:19 BoogieIcfgContainer [2021-12-06 23:57:19,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:57:19,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:57:19,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:57:19,352 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:57:19,352 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:57:15" (3/4) ... [2021-12-06 23:57:19,354 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 23:57:19,419 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 23:57:19,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:57:19,420 INFO L158 Benchmark]: Toolchain (without parser) took 4274.31ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 88.6MB in the beginning and 46.4MB in the end (delta: 42.2MB). Peak memory consumption was 66.6MB. Max. memory is 16.1GB. [2021-12-06 23:57:19,420 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 79.7MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:57:19,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.89ms. Allocated memory is still 111.1MB. Free memory was 88.3MB in the beginning and 69.8MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-06 23:57:19,420 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.16ms. Allocated memory is still 111.1MB. Free memory was 69.8MB in the beginning and 67.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:57:19,420 INFO L158 Benchmark]: Boogie Preprocessor took 21.31ms. Allocated memory is still 111.1MB. Free memory was 67.4MB in the beginning and 65.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:57:19,421 INFO L158 Benchmark]: RCFGBuilder took 345.69ms. Allocated memory is still 111.1MB. Free memory was 65.7MB in the beginning and 49.3MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-06 23:57:19,421 INFO L158 Benchmark]: TraceAbstraction took 3483.26ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 48.9MB in the beginning and 56.9MB in the end (delta: -8.0MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2021-12-06 23:57:19,421 INFO L158 Benchmark]: Witness Printer took 67.24ms. Allocated memory is still 134.2MB. Free memory was 56.9MB in the beginning and 46.4MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 23:57:19,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 79.7MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.89ms. Allocated memory is still 111.1MB. Free memory was 88.3MB in the beginning and 69.8MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.16ms. Allocated memory is still 111.1MB. Free memory was 69.8MB in the beginning and 67.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.31ms. Allocated memory is still 111.1MB. Free memory was 67.4MB in the beginning and 65.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 345.69ms. Allocated memory is still 111.1MB. Free memory was 65.7MB in the beginning and 49.3MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3483.26ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 48.9MB in the beginning and 56.9MB in the end (delta: -8.0MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * Witness Printer took 67.24ms. Allocated memory is still 134.2MB. Free memory was 56.9MB in the beginning and 46.4MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. 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 - CounterExampleResult [Line: 732]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L257] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L534] int pumpRunning = 0; [L535] int systemActive = 1; [L738] int waterLevel = 1; [L739] int methaneLevelCritical = 0; [L832] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L905] int retValue_acc ; [L906] int tmp ; [L910] FCALL select_helpers() [L911] FCALL select_features() [L912] CALL, EXPR valid_product() [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L912] RET, EXPR valid_product() [L912] tmp = valid_product() [L914] COND TRUE \read(tmp) [L916] FCALL setup() [L917] CALL runTest() [L899] CALL test() [L460] int splverifierCounter ; [L461] int tmp ; [L462] int tmp___0 ; [L463] int tmp___1 ; [L464] int tmp___2 ; [L467] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L469] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L471] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L477] tmp = __VERIFIER_nondet_int() [L479] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L481] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L756] COND TRUE waterLevel < 2 [L757] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L481] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L487] tmp___0 = __VERIFIER_nondet_int() [L489] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L497] tmp___2 = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L514] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L542] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L549] COND TRUE \read(systemActive) [L551] CALL processEnvironment() [L597] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L600] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L615] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L571] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L574] COND TRUE ! pumpRunning [L576] CALL, EXPR isHighWaterLevel() [L694] int retValue_acc ; [L695] int tmp ; [L696] int tmp___0 ; [L700] CALL, EXPR isHighWaterSensorDry() [L818] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L821] COND FALSE !(waterLevel < 2) [L825] retValue_acc = 0 [L826] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L700] RET, EXPR isHighWaterSensorDry() [L700] tmp = isHighWaterSensorDry() [L702] COND FALSE !(\read(tmp)) [L705] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L707] retValue_acc = tmp___0 [L708] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L576] RET, EXPR isHighWaterLevel() [L576] tmp = isHighWaterLevel() [L578] COND TRUE \read(tmp) [L580] CALL activatePump() [L625] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L580] RET activatePump() [L615] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L551] RET processEnvironment() [L557] CALL __utac_acc__Specification4_spec__1() [L929] int tmp ; [L930] int tmp___0 ; [L934] CALL, EXPR getWaterLevel() [L809] int retValue_acc ; [L812] retValue_acc = waterLevel [L813] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L934] RET, EXPR getWaterLevel() [L934] tmp = getWaterLevel() [L936] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L557] RET __utac_acc__Specification4_spec__1() [L514] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L469] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L471] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L477] tmp = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L487] tmp___0 = __VERIFIER_nondet_int() [L489] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L497] tmp___2 = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L514] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L542] COND TRUE \read(pumpRunning) [L544] CALL lowerWaterLevel() [L744] COND TRUE waterLevel > 0 [L745] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L544] RET lowerWaterLevel() [L549] COND TRUE \read(systemActive) [L551] CALL processEnvironment() [L597] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L600] COND TRUE \read(pumpRunning) [L602] CALL, EXPR isMethaneAlarm() [L638] int retValue_acc ; [L642] CALL, EXPR isMethaneLevelCritical() [L777] int retValue_acc ; [L780] retValue_acc = methaneLevelCritical [L781] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L642] RET, EXPR isMethaneLevelCritical() [L642] retValue_acc = isMethaneLevelCritical() [L644] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L602] RET, EXPR isMethaneAlarm() [L602] tmp = isMethaneAlarm() [L604] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L610] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L571] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L574] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L589] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L610] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L551] RET processEnvironment() [L557] CALL __utac_acc__Specification4_spec__1() [L929] int tmp ; [L930] int tmp___0 ; [L934] CALL, EXPR getWaterLevel() [L809] int retValue_acc ; [L812] retValue_acc = waterLevel [L813] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L934] RET, EXPR getWaterLevel() [L934] tmp = getWaterLevel() [L936] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L557] RET __utac_acc__Specification4_spec__1() [L514] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L469] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L471] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L477] tmp = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L487] tmp___0 = __VERIFIER_nondet_int() [L489] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L497] tmp___2 = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L514] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L542] COND TRUE \read(pumpRunning) [L544] CALL lowerWaterLevel() [L744] COND TRUE waterLevel > 0 [L745] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L544] RET lowerWaterLevel() [L549] COND TRUE \read(systemActive) [L551] CALL processEnvironment() [L597] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L600] COND TRUE \read(pumpRunning) [L602] CALL, EXPR isMethaneAlarm() [L638] int retValue_acc ; [L642] CALL, EXPR isMethaneLevelCritical() [L777] int retValue_acc ; [L780] retValue_acc = methaneLevelCritical [L781] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L642] RET, EXPR isMethaneLevelCritical() [L642] retValue_acc = isMethaneLevelCritical() [L644] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L602] RET, EXPR isMethaneAlarm() [L602] tmp = isMethaneAlarm() [L604] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L610] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L571] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L574] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L589] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L610] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L551] RET processEnvironment() [L557] CALL __utac_acc__Specification4_spec__1() [L929] int tmp ; [L930] int tmp___0 ; [L934] CALL, EXPR getWaterLevel() [L809] int retValue_acc ; [L812] retValue_acc = waterLevel [L813] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L934] RET, EXPR getWaterLevel() [L934] tmp = getWaterLevel() [L936] COND TRUE tmp == 0 [L938] CALL, EXPR isPumpRunning() [L649] int retValue_acc ; [L652] retValue_acc = pumpRunning [L653] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L938] RET, EXPR isPumpRunning() [L938] tmp___0 = isPumpRunning() [L940] COND TRUE \read(tmp___0) [L942] CALL __automaton_fail() [L732] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1309 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1293 mSDsluCounter, 3267 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2264 mSDsCounter, 349 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1440 IncrementalHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 349 mSolverCounterUnsat, 1003 mSDtfsCounter, 1440 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 285 GetRequests, 193 SyntacticMatches, 4 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=840occurred in iteration=10, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 356 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 533 NumberOfCodeBlocks, 533 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 489 ConstructedInterpolants, 0 QuantifiedInterpolants, 983 SizeOfPredicates, 4 NumberOfNonLiveVariables, 414 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 41/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 23:57:19,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a927f8cc-a8b1-4cac-bff0-44bb3e1e13c5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE