./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN --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 aad1ec08d8a193b38b6e11f9698a2d5cafe1e5bac6d0d3a9987fa93ed6006219 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:11:22,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:11:22,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:11:22,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:11:22,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:11:22,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:11:22,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:11:22,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:11:22,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:11:22,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:11:22,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:11:22,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:11:22,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:11:22,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:11:22,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:11:22,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:11:22,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:11:22,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:11:22,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:11:22,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:11:22,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:11:22,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:11:22,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:11:22,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:11:22,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:11:22,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:11:22,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:11:22,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:11:22,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:11:22,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:11:22,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:11:22,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:11:22,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:11:22,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:11:22,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:11:22,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:11:22,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:11:22,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:11:22,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:11:22,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:11:22,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:11:22,329 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:11:22,379 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:11:22,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:11:22,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:11:22,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:11:22,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:11:22,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:11:22,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:11:22,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:11:22,386 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:11:22,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:11:22,388 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:11:22,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:11:22,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:11:22,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:11:22,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:11:22,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:11:22,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:11:22,390 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:11:22,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:11:22,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:11:22,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:11:22,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:11:22,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:11:22,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:11:22,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:11:22,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:11:22,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:11:22,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:11:22,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:11:22,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:11:22,394 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:11:22,394 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:11:22,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:11:22,395 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_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad1ec08d8a193b38b6e11f9698a2d5cafe1e5bac6d0d3a9987fa93ed6006219 [2022-11-20 11:11:22,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:11:22,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:11:22,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:11:22,826 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:11:22,827 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:11:22,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c [2022-11-20 11:11:25,980 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:11:26,385 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:11:26,385 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c [2022-11-20 11:11:26,398 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/data/3d27defed/e7c33544c9364583b0cd16a90cba56b4/FLAG91fe4d8e7 [2022-11-20 11:11:26,414 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/data/3d27defed/e7c33544c9364583b0cd16a90cba56b4 [2022-11-20 11:11:26,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:11:26,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:11:26,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:11:26,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:11:26,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:11:26,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42604faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26, skipping insertion in model container [2022-11-20 11:11:26,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:11:26,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:11:26,692 WARN L237 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_433c3fa6-5ce8-4089-9944-3366b0aefab1/sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c[7021,7034] [2022-11-20 11:11:26,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:11:26,792 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:11:26,826 WARN L237 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_433c3fa6-5ce8-4089-9944-3366b0aefab1/sv-benchmarks/c/product-lines/minepump_spec2_product37.cil.c[7021,7034] [2022-11-20 11:11:26,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:11:26,884 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:11:26,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26 WrapperNode [2022-11-20 11:11:26,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:11:26,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:11:26,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:11:26,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:11:26,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,935 INFO L138 Inliner]: procedures = 54, calls = 98, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 191 [2022-11-20 11:11:26,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:11:26,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:11:26,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:11:26,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:11:26,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:11:26,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:11:26,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:11:26,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:11:26,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26" (1/1) ... [2022-11-20 11:11:26,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:11:26,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:27,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:27,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:11:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:11:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-20 11:11:27,075 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-20 11:11:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 11:11:27,076 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 11:11:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-20 11:11:27,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-20 11:11:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 11:11:27,077 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 11:11:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 11:11:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 11:11:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-20 11:11:27,079 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-20 11:11:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:11:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-20 11:11:27,079 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-20 11:11:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:11:27,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:11:27,208 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:11:27,211 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:11:27,682 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:11:27,693 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:11:27,693 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:11:27,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:27 BoogieIcfgContainer [2022-11-20 11:11:27,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:11:27,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:11:27,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:11:27,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:11:27,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:11:26" (1/3) ... [2022-11-20 11:11:27,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cc9e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:11:27, skipping insertion in model container [2022-11-20 11:11:27,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:26" (2/3) ... [2022-11-20 11:11:27,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cc9e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:11:27, skipping insertion in model container [2022-11-20 11:11:27,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:27" (3/3) ... [2022-11-20 11:11:27,706 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product37.cil.c [2022-11-20 11:11:27,731 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:11:27,731 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:11:27,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:11:27,823 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@240d4df2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:11:27,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:11:27,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 66 states have (on average 1.393939393939394) internal successors, (92), 74 states have internal predecessors, (92), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:11:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 11:11:27,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:27,846 INFO L195 NwaCegarLoop]: 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] [2022-11-20 11:11:27,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:27,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:27,855 INFO L85 PathProgramCache]: Analyzing trace with hash -985804635, now seen corresponding path program 1 times [2022-11-20 11:11:27,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:27,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331428044] [2022-11-20 11:11:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:27,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:28,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:11:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:28,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:28,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331428044] [2022-11-20 11:11:28,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331428044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:28,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:28,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:11:28,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857845617] [2022-11-20 11:11:28,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:28,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:11:28,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:28,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:11:28,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:11:28,205 INFO L87 Difference]: Start difference. First operand has 87 states, 66 states have (on average 1.393939393939394) internal successors, (92), 74 states have internal predecessors, (92), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:11:28,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:28,247 INFO L93 Difference]: Finished difference Result 165 states and 226 transitions. [2022-11-20 11:11:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:11:28,249 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-11-20 11:11:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:28,261 INFO L225 Difference]: With dead ends: 165 [2022-11-20 11:11:28,262 INFO L226 Difference]: Without dead ends: 78 [2022-11-20 11:11:28,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:11:28,275 INFO L413 NwaCegarLoop]: 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 [2022-11-20 11:11:28,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:11:28,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-20 11:11:28,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-20 11:11:28,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 66 states have internal predecessors, (78), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 11:11:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2022-11-20 11:11:28,369 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 25 [2022-11-20 11:11:28,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:28,370 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2022-11-20 11:11:28,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:11:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2022-11-20 11:11:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 11:11:28,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:28,374 INFO L195 NwaCegarLoop]: 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] [2022-11-20 11:11:28,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:11:28,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:28,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:28,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1726186972, now seen corresponding path program 1 times [2022-11-20 11:11:28,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:28,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516721469] [2022-11-20 11:11:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:28,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:28,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:11:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:28,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:28,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516721469] [2022-11-20 11:11:28,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516721469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:28,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:28,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:11:28,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101150670] [2022-11-20 11:11:28,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:28,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:28,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:28,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:28,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:28,588 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:11:28,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:28,647 INFO L93 Difference]: Finished difference Result 121 states and 157 transitions. [2022-11-20 11:11:28,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:28,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-11-20 11:11:28,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:28,655 INFO L225 Difference]: With dead ends: 121 [2022-11-20 11:11:28,656 INFO L226 Difference]: Without dead ends: 69 [2022-11-20 11:11:28,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:28,660 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 12 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 160 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 [2022-11-20 11:11:28,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 160 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:11:28,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-20 11:11:28,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-20 11:11:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 60 states have internal predecessors, (71), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 11:11:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-11-20 11:11:28,690 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 26 [2022-11-20 11:11:28,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:28,691 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-11-20 11:11:28,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:11:28,691 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-11-20 11:11:28,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:11:28,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:28,695 INFO L195 NwaCegarLoop]: 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] [2022-11-20 11:11:28,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:11:28,696 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:28,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:28,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1161832603, now seen corresponding path program 1 times [2022-11-20 11:11:28,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:28,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232005438] [2022-11-20 11:11:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:28,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:11:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:28,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:28,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232005438] [2022-11-20 11:11:28,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232005438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:28,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:28,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:11:28,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141835864] [2022-11-20 11:11:28,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:28,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:28,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:28,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:28,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:28,868 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 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) [2022-11-20 11:11:28,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:28,889 INFO L93 Difference]: Finished difference Result 130 states and 171 transitions. [2022-11-20 11:11:28,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:28,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 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 30 [2022-11-20 11:11:28,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:28,892 INFO L225 Difference]: With dead ends: 130 [2022-11-20 11:11:28,892 INFO L226 Difference]: Without dead ends: 69 [2022-11-20 11:11:28,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:28,895 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 87 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 [2022-11-20 11:11:28,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 87 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:11:28,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-20 11:11:28,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-20 11:11:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 53 states have (on average 1.320754716981132) internal successors, (70), 60 states have internal predecessors, (70), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 11:11:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2022-11-20 11:11:28,908 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 30 [2022-11-20 11:11:28,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:28,908 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2022-11-20 11:11:28,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 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) [2022-11-20 11:11:28,909 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2022-11-20 11:11:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:11:28,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:28,911 INFO L195 NwaCegarLoop]: 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] [2022-11-20 11:11:28,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:11:28,911 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:28,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:28,912 INFO L85 PathProgramCache]: Analyzing trace with hash 202365907, now seen corresponding path program 1 times [2022-11-20 11:11:28,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:28,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061094255] [2022-11-20 11:11:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:28,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:29,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:11:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:29,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:11:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:29,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:11:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:29,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:29,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061094255] [2022-11-20 11:11:29,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061094255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:29,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:29,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:11:29,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780134911] [2022-11-20 11:11:29,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:29,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:11:29,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:29,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:11:29,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:11:29,098 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:11:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:29,544 INFO L93 Difference]: Finished difference Result 204 states and 262 transitions. [2022-11-20 11:11:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:11:29,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 40 [2022-11-20 11:11:29,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:29,547 INFO L225 Difference]: With dead ends: 204 [2022-11-20 11:11:29,547 INFO L226 Difference]: Without dead ends: 143 [2022-11-20 11:11:29,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:29,550 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 161 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:29,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 281 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:11:29,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-20 11:11:29,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 137. [2022-11-20 11:11:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 105 states have (on average 1.2857142857142858) internal successors, (135), 112 states have internal predecessors, (135), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-20 11:11:29,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 170 transitions. [2022-11-20 11:11:29,614 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 170 transitions. Word has length 40 [2022-11-20 11:11:29,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:29,616 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 170 transitions. [2022-11-20 11:11:29,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:11:29,616 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 170 transitions. [2022-11-20 11:11:29,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 11:11:29,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:29,622 INFO L195 NwaCegarLoop]: 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, 1, 1] [2022-11-20 11:11:29,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:11:29,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:29,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:29,624 INFO L85 PathProgramCache]: Analyzing trace with hash 886374373, now seen corresponding path program 1 times [2022-11-20 11:11:29,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:29,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299540049] [2022-11-20 11:11:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:29,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:29,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:11:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:29,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:11:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:29,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:29,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299540049] [2022-11-20 11:11:29,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299540049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:29,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:29,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:11:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821121425] [2022-11-20 11:11:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:11:29,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:29,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:11:29,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:11:29,926 INFO L87 Difference]: Start difference. First operand 137 states and 170 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:30,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:30,339 INFO L93 Difference]: Finished difference Result 383 states and 498 transitions. [2022-11-20 11:11:30,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:11:30,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-20 11:11:30,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:30,343 INFO L225 Difference]: With dead ends: 383 [2022-11-20 11:11:30,343 INFO L226 Difference]: Without dead ends: 254 [2022-11-20 11:11:30,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:11:30,346 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 156 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:30,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 381 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:11:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-20 11:11:30,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 221. [2022-11-20 11:11:30,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 170 states have (on average 1.2882352941176471) internal successors, (219), 179 states have internal predecessors, (219), 25 states have call successors, (25), 23 states have call predecessors, (25), 25 states have return successors, (35), 25 states have call predecessors, (35), 25 states have call successors, (35) [2022-11-20 11:11:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 279 transitions. [2022-11-20 11:11:30,382 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 279 transitions. Word has length 44 [2022-11-20 11:11:30,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:30,383 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 279 transitions. [2022-11-20 11:11:30,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 279 transitions. [2022-11-20 11:11:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 11:11:30,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:30,385 INFO L195 NwaCegarLoop]: 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, 1, 1] [2022-11-20 11:11:30,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:11:30,386 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:30,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:30,387 INFO L85 PathProgramCache]: Analyzing trace with hash 463672547, now seen corresponding path program 1 times [2022-11-20 11:11:30,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:30,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136408216] [2022-11-20 11:11:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:30,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:30,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:11:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:11:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:30,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:30,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136408216] [2022-11-20 11:11:30,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136408216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:30,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:30,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:11:30,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816952280] [2022-11-20 11:11:30,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:30,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:11:30,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:30,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:11:30,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:11:30,515 INFO L87 Difference]: Start difference. First operand 221 states and 279 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:30,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:30,729 INFO L93 Difference]: Finished difference Result 448 states and 573 transitions. [2022-11-20 11:11:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:11:30,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-20 11:11:30,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:30,736 INFO L225 Difference]: With dead ends: 448 [2022-11-20 11:11:30,736 INFO L226 Difference]: Without dead ends: 235 [2022-11-20 11:11:30,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:11:30,739 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 60 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:30,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 350 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:11:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-20 11:11:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 227. [2022-11-20 11:11:30,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 176 states have (on average 1.2784090909090908) internal successors, (225), 185 states have internal predecessors, (225), 25 states have call successors, (25), 23 states have call predecessors, (25), 25 states have return successors, (35), 25 states have call predecessors, (35), 25 states have call successors, (35) [2022-11-20 11:11:30,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 285 transitions. [2022-11-20 11:11:30,844 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 285 transitions. Word has length 44 [2022-11-20 11:11:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:30,845 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 285 transitions. [2022-11-20 11:11:30,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:30,846 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 285 transitions. [2022-11-20 11:11:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 11:11:30,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:30,853 INFO L195 NwaCegarLoop]: 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, 1, 1] [2022-11-20 11:11:30,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:11:30,854 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:30,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1225271195, now seen corresponding path program 1 times [2022-11-20 11:11:30,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:30,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786290429] [2022-11-20 11:11:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:30,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:11:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:31,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:11:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:31,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:31,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:31,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786290429] [2022-11-20 11:11:31,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786290429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:31,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:31,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:11:31,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883129071] [2022-11-20 11:11:31,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:31,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:11:31,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:31,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:11:31,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:11:31,048 INFO L87 Difference]: Start difference. First operand 227 states and 285 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:31,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:31,256 INFO L93 Difference]: Finished difference Result 413 states and 524 transitions. [2022-11-20 11:11:31,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:11:31,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-20 11:11:31,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:31,263 INFO L225 Difference]: With dead ends: 413 [2022-11-20 11:11:31,263 INFO L226 Difference]: Without dead ends: 194 [2022-11-20 11:11:31,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:11:31,271 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 137 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:31,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 220 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:11:31,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-20 11:11:31,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2022-11-20 11:11:31,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 146 states have (on average 1.2534246575342465) internal successors, (183), 154 states have internal predecessors, (183), 21 states have call successors, (21), 19 states have call predecessors, (21), 21 states have return successors, (26), 21 states have call predecessors, (26), 21 states have call successors, (26) [2022-11-20 11:11:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 230 transitions. [2022-11-20 11:11:31,311 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 230 transitions. Word has length 44 [2022-11-20 11:11:31,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:31,312 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 230 transitions. [2022-11-20 11:11:31,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:31,312 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 230 transitions. [2022-11-20 11:11:31,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 11:11:31,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:31,314 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1] [2022-11-20 11:11:31,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:11:31,316 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:31,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:31,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1754769083, now seen corresponding path program 1 times [2022-11-20 11:11:31,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:31,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289503504] [2022-11-20 11:11:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:31,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:11:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:31,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:11:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:11:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:31,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:31,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289503504] [2022-11-20 11:11:31,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289503504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:31,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:31,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:11:31,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691664612] [2022-11-20 11:11:31,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:31,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:11:31,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:31,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:11:31,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:11:31,519 INFO L87 Difference]: Start difference. First operand 189 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:11:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:31,843 INFO L93 Difference]: Finished difference Result 384 states and 468 transitions. [2022-11-20 11:11:31,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:11:31,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-11-20 11:11:31,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:31,848 INFO L225 Difference]: With dead ends: 384 [2022-11-20 11:11:31,848 INFO L226 Difference]: Without dead ends: 203 [2022-11-20 11:11:31,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:11:31,850 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 113 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:31,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 325 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:11:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-20 11:11:31,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 186. [2022-11-20 11:11:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 143 states have (on average 1.2167832167832169) internal successors, (174), 151 states have internal predecessors, (174), 21 states have call successors, (21), 19 states have call predecessors, (21), 21 states have return successors, (26), 21 states have call predecessors, (26), 21 states have call successors, (26) [2022-11-20 11:11:31,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 221 transitions. [2022-11-20 11:11:31,871 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 221 transitions. Word has length 46 [2022-11-20 11:11:31,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:31,872 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 221 transitions. [2022-11-20 11:11:31,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:11:31,872 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 221 transitions. [2022-11-20 11:11:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 11:11:31,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:31,873 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:31,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:11:31,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:31,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:31,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1319361279, now seen corresponding path program 1 times [2022-11-20 11:11:31,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:31,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568556136] [2022-11-20 11:11:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:31,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:11:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:11:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:11:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:31,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:31,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568556136] [2022-11-20 11:11:31,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568556136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:31,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:31,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:11:31,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833235806] [2022-11-20 11:11:31,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:31,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:11:31,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:31,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:11:31,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:11:31,960 INFO L87 Difference]: Start difference. First operand 186 states and 221 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:11:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:32,291 INFO L93 Difference]: Finished difference Result 360 states and 441 transitions. [2022-11-20 11:11:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:11:32,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2022-11-20 11:11:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:32,299 INFO L225 Difference]: With dead ends: 360 [2022-11-20 11:11:32,300 INFO L226 Difference]: Without dead ends: 358 [2022-11-20 11:11:32,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:11:32,301 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 261 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:32,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 213 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:11:32,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-20 11:11:32,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 275. [2022-11-20 11:11:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 210 states have (on average 1.2190476190476192) internal successors, (256), 223 states have internal predecessors, (256), 31 states have call successors, (31), 28 states have call predecessors, (31), 33 states have return successors, (46), 31 states have call predecessors, (46), 31 states have call successors, (46) [2022-11-20 11:11:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 333 transitions. [2022-11-20 11:11:32,336 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 333 transitions. Word has length 48 [2022-11-20 11:11:32,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:32,336 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 333 transitions. [2022-11-20 11:11:32,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:11:32,337 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 333 transitions. [2022-11-20 11:11:32,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 11:11:32,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:32,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 11:11:32,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:11:32,340 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:32,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1077253484, now seen corresponding path program 1 times [2022-11-20 11:11:32,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:32,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516133201] [2022-11-20 11:11:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:32,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:11:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:11:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:11:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:11:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:11:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:11:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 11:11:32,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:32,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516133201] [2022-11-20 11:11:32,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516133201] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:32,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308100748] [2022-11-20 11:11:32,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:32,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:32,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:32,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:32,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:11:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:11:32,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:32,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:32,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308100748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:32,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:11:32,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2022-11-20 11:11:32,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977178633] [2022-11-20 11:11:32,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:32,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:32,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:32,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:32,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:32,761 INFO L87 Difference]: Start difference. First operand 275 states and 333 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 11:11:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:32,811 INFO L93 Difference]: Finished difference Result 461 states and 565 transitions. [2022-11-20 11:11:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:32,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 86 [2022-11-20 11:11:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:32,816 INFO L225 Difference]: With dead ends: 461 [2022-11-20 11:11:32,816 INFO L226 Difference]: Without dead ends: 240 [2022-11-20 11:11:32,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:32,818 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 37 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:32,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 190 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:11:32,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-20 11:11:32,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-11-20 11:11:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 182 states have (on average 1.2142857142857142) internal successors, (221), 194 states have internal predecessors, (221), 28 states have call successors, (28), 25 states have call predecessors, (28), 29 states have return successors, (36), 28 states have call predecessors, (36), 28 states have call successors, (36) [2022-11-20 11:11:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 285 transitions. [2022-11-20 11:11:32,853 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 285 transitions. Word has length 86 [2022-11-20 11:11:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:32,855 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 285 transitions. [2022-11-20 11:11:32,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 11:11:32,855 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 285 transitions. [2022-11-20 11:11:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 11:11:32,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:32,858 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:32,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:33,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:11:33,071 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:33,071 INFO L85 PathProgramCache]: Analyzing trace with hash 187606056, now seen corresponding path program 1 times [2022-11-20 11:11:33,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:33,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834875412] [2022-11-20 11:11:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:33,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:11:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:11:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:11:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:11:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 11:11:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 11:11:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:11:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 11:11:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:11:33,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:33,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834875412] [2022-11-20 11:11:33,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834875412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:33,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293209258] [2022-11-20 11:11:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:33,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:33,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:33,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:33,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:11:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:11:33,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:11:33,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:11:34,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293209258] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:34,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:34,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 5] total 14 [2022-11-20 11:11:34,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711607888] [2022-11-20 11:11:34,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:34,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:11:34,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:34,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:11:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:11:34,240 INFO L87 Difference]: Start difference. First operand 240 states and 285 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:11:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:34,418 INFO L93 Difference]: Finished difference Result 684 states and 829 transitions. [2022-11-20 11:11:34,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:11:34,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2022-11-20 11:11:34,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:34,421 INFO L225 Difference]: With dead ends: 684 [2022-11-20 11:11:34,421 INFO L226 Difference]: Without dead ends: 452 [2022-11-20 11:11:34,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 188 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:11:34,423 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 52 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:34,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 423 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:11:34,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-20 11:11:34,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 408. [2022-11-20 11:11:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 306 states have (on average 1.1862745098039216) internal successors, (363), 327 states have internal predecessors, (363), 49 states have call successors, (49), 44 states have call predecessors, (49), 52 states have return successors, (65), 49 states have call predecessors, (65), 49 states have call successors, (65) [2022-11-20 11:11:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 477 transitions. [2022-11-20 11:11:34,472 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 477 transitions. Word has length 91 [2022-11-20 11:11:34,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:34,473 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 477 transitions. [2022-11-20 11:11:34,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:11:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 477 transitions. [2022-11-20 11:11:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 11:11:34,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:34,476 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-20 11:11:34,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:34,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:34,682 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:34,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1820456588, now seen corresponding path program 1 times [2022-11-20 11:11:34,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:34,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980019467] [2022-11-20 11:11:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:34,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:34,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:11:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:11:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:34,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:11:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:11:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:11:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:34,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:11:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:34,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:11:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:34,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:11:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:34,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 11:11:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:11:34,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:34,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980019467] [2022-11-20 11:11:34,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980019467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:34,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401623236] [2022-11-20 11:11:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:34,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:34,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:34,924 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:34,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:11:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:35,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:11:35,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:11:35,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:35,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401623236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:35,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:11:35,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-20 11:11:35,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701513468] [2022-11-20 11:11:35,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:35,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:11:35,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:35,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:11:35,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:11:35,241 INFO L87 Difference]: Start difference. First operand 408 states and 477 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 11:11:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:35,399 INFO L93 Difference]: Finished difference Result 766 states and 901 transitions. [2022-11-20 11:11:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:11:35,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2022-11-20 11:11:35,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:35,400 INFO L225 Difference]: With dead ends: 766 [2022-11-20 11:11:35,400 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:11:35,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:11:35,403 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 47 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:35,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 728 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:11:35,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:11:35,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:11:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:11:35,405 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2022-11-20 11:11:35,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:35,405 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:11:35,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 11:11:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:11:35,406 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:11:35,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:11:35,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:35,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:11:35,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:11:40,840 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 87 93) no Hoare annotation was computed. [2022-11-20 11:11:40,840 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 87 93) the Hoare annotation is: true [2022-11-20 11:11:40,841 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 373 384) the Hoare annotation is: (let ((.cse2 (not (<= 1 ~pumpRunning~0))) (.cse5 (not (<= |old(~methaneLevelCritical~0)| 0))) (.cse6 (and (<= ~methaneLevelCritical~0 0) (<= 0 ~methaneLevelCritical~0))) (.cse7 (not (<= 0 |old(~methaneLevelCritical~0)|))) (.cse0 (<= 1 ~methaneLevelCritical~0)) (.cse4 (not (= ~pumpRunning~0 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse3 (not (<= 1 |old(~methaneLevelCritical~0)|))) (.cse8 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse1 .cse5 .cse6 .cse7 .cse8) (or .cse1 .cse2 .cse5 .cse6 .cse7 .cse8) (or .cse0 .cse4 .cse1 .cse3 .cse8))) [2022-11-20 11:11:40,841 INFO L899 garLoopResultBuilder]: For program point L377-1(lines 373 384) no Hoare annotation was computed. [2022-11-20 11:11:40,841 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 373 384) no Hoare annotation was computed. [2022-11-20 11:11:40,841 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 817 846) no Hoare annotation was computed. [2022-11-20 11:11:40,841 INFO L899 garLoopResultBuilder]: For program point L831(lines 831 835) no Hoare annotation was computed. [2022-11-20 11:11:40,841 INFO L902 garLoopResultBuilder]: At program point L831-1(lines 831 835) the Hoare annotation is: true [2022-11-20 11:11:40,842 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 817 846) the Hoare annotation is: true [2022-11-20 11:11:40,842 INFO L899 garLoopResultBuilder]: For program point L828(line 828) no Hoare annotation was computed. [2022-11-20 11:11:40,842 INFO L902 garLoopResultBuilder]: At program point L827-2(lines 827 841) the Hoare annotation is: true [2022-11-20 11:11:40,842 INFO L902 garLoopResultBuilder]: At program point L823(line 823) the Hoare annotation is: true [2022-11-20 11:11:40,842 INFO L899 garLoopResultBuilder]: For program point L823-1(line 823) no Hoare annotation was computed. [2022-11-20 11:11:40,842 INFO L902 garLoopResultBuilder]: At program point L842(lines 817 846) the Hoare annotation is: true [2022-11-20 11:11:40,842 INFO L899 garLoopResultBuilder]: For program point L838(line 838) no Hoare annotation was computed. [2022-11-20 11:11:40,842 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 385 393) the Hoare annotation is: true [2022-11-20 11:11:40,842 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalFINAL(lines 385 393) no Hoare annotation was computed. [2022-11-20 11:11:40,843 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 385 393) no Hoare annotation was computed. [2022-11-20 11:11:40,843 INFO L899 garLoopResultBuilder]: For program point L353(lines 353 357) no Hoare annotation was computed. [2022-11-20 11:11:40,843 INFO L895 garLoopResultBuilder]: At program point L353-2(lines 349 360) the Hoare annotation is: (let ((.cse1 (not (<= 1 |old(~pumpRunning~0)|))) (.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 0 ~methaneLevelCritical~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1 .cse2) (or .cse3 (= ~methAndRunningLastTime~0 0) .cse0 .cse1 (not (<= 1 ~methaneLevelCritical~0))) (or (not (= |old(~pumpRunning~0)| 0)) .cse3 .cse0 .cse2))) [2022-11-20 11:11:40,843 INFO L895 garLoopResultBuilder]: At program point L159(lines 154 161) the Hoare annotation is: (let ((.cse1 (not (<= 1 |old(~pumpRunning~0)|))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 0 ~methaneLevelCritical~0)))) (and (or (= ~pumpRunning~0 0) .cse0 .cse1 .cse2) (or (and (<= 1 |timeShift_isMethaneAlarm_#res#1|) (<= 1 |timeShift_processEnvironment_~tmp~1#1|)) .cse0 .cse1 (not (<= 1 ~methaneLevelCritical~0))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 .cse2))) [2022-11-20 11:11:40,844 INFO L899 garLoopResultBuilder]: For program point L329(lines 329 335) no Hoare annotation was computed. [2022-11-20 11:11:40,844 INFO L895 garLoopResultBuilder]: At program point L135(line 135) the Hoare annotation is: (let ((.cse1 (not (<= 1 |old(~pumpRunning~0)|))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 0 ~methaneLevelCritical~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1 .cse2) (or .cse0 .cse1 (not (<= 1 ~methaneLevelCritical~0))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 .cse2))) [2022-11-20 11:11:40,844 INFO L899 garLoopResultBuilder]: For program point timeShiftFINAL(lines 63 86) no Hoare annotation was computed. [2022-11-20 11:11:40,844 INFO L899 garLoopResultBuilder]: For program point L445(line 445) no Hoare annotation was computed. [2022-11-20 11:11:40,844 INFO L895 garLoopResultBuilder]: At program point L140(line 140) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= 0 ~methaneLevelCritical~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse1) (or .cse0 (not (<= 1 |old(~pumpRunning~0)|)) .cse1))) [2022-11-20 11:11:40,845 INFO L895 garLoopResultBuilder]: At program point L140-1(lines 121 145) the Hoare annotation is: (let ((.cse6 (= 1 ~systemActive~0))) (let ((.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse2 (not .cse6)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (= ~pumpRunning~0 0)) (.cse7 (not (<= 1 |old(~pumpRunning~0)|))) (.cse3 (not (<= 0 ~methaneLevelCritical~0)))) (and (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 1)) .cse2 .cse3 (and .cse4 .cse5)) (or .cse2 (and .cse0 .cse4 (<= 1 |timeShift_isMethaneAlarm_#res#1|) (<= 1 |timeShift_processEnvironment_~tmp~1#1|) .cse6) .cse7 (not (<= 1 ~methaneLevelCritical~0))) (let ((.cse8 (= |old(~waterLevel~0)| ~waterLevel~0))) (or .cse0 .cse1 (and .cse4 .cse8) .cse2 (and (<= 1 ~pumpRunning~0) .cse5 .cse8) .cse3)) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse2 (and .cse0 .cse4 .cse6) .cse7 .cse3)))) [2022-11-20 11:11:40,845 INFO L895 garLoopResultBuilder]: At program point L169(lines 162 172) the Hoare annotation is: (let ((.cse1 (not (<= 1 |old(~pumpRunning~0)|))) (.cse3 (not (<= 1 ~methaneLevelCritical~0))) (.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 0 ~methaneLevelCritical~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1 .cse2) (or (<= 1 |timeShift_isMethaneAlarm_#res#1|) .cse0 .cse1 .cse3) (or .cse4 (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse3) (or (not (= |old(~pumpRunning~0)| 0)) .cse4 .cse0 .cse2))) [2022-11-20 11:11:40,845 INFO L899 garLoopResultBuilder]: For program point L74-1(lines 74 80) no Hoare annotation was computed. [2022-11-20 11:11:40,846 INFO L895 garLoopResultBuilder]: At program point L322(line 322) the Hoare annotation is: (let ((.cse6 (= 1 ~systemActive~0))) (let ((.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse2 (not .cse6)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (= ~pumpRunning~0 0)) (.cse7 (not (<= 1 |old(~pumpRunning~0)|))) (.cse3 (not (<= 0 ~methaneLevelCritical~0)))) (and (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 1)) .cse2 .cse3 (and .cse4 .cse5)) (or .cse2 (and .cse0 .cse4 (<= 1 |timeShift_isMethaneAlarm_#res#1|) (<= 1 |timeShift_processEnvironment_~tmp~1#1|) .cse6) .cse7 (not (<= 1 ~methaneLevelCritical~0))) (let ((.cse8 (= |old(~waterLevel~0)| ~waterLevel~0))) (or .cse0 .cse1 (and .cse4 .cse8) .cse2 (and (<= 1 ~pumpRunning~0) .cse5 .cse8) .cse3)) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse2 (and .cse0 .cse4 .cse6) .cse7 .cse3)))) [2022-11-20 11:11:40,846 INFO L899 garLoopResultBuilder]: For program point L322-1(line 322) no Hoare annotation was computed. [2022-11-20 11:11:40,846 INFO L895 garLoopResultBuilder]: At program point L446(lines 441 448) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= 0 ~methaneLevelCritical~0)))) (and (or .cse0 (not (<= 1 |old(~pumpRunning~0)|)) .cse1) (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 .cse1))) [2022-11-20 11:11:40,846 INFO L895 garLoopResultBuilder]: At program point L178(lines 173 181) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse3 (not (<= 1 ~methaneLevelCritical~0))) (.cse4 (= ~pumpRunning~0 0)) (.cse9 (= |timeShift_isPumpRunning_#res#1| 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse8 (not (<= 1 |old(~pumpRunning~0)|))) (.cse6 (not (<= ~methaneLevelCritical~0 0))) (.cse7 (not (<= 0 ~methaneLevelCritical~0)))) (and (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 1)) .cse2 .cse3 (and .cse4 .cse5)) (or .cse0 .cse1 .cse2 .cse6 .cse7) (or .cse2 .cse8 .cse3 (and .cse4 (<= 1 |timeShift_isMethaneAlarm_#res#1|) .cse9 (<= 1 |timeShift_processEnvironment_~tmp~1#1|))) (let ((.cse10 (= |old(~waterLevel~0)| ~waterLevel~0))) (or .cse0 .cse1 .cse2 (and (<= 1 ~pumpRunning~0) .cse5 .cse10) .cse3 (and .cse4 .cse9 .cse10))) (or .cse2 .cse8 .cse6 .cse7))) [2022-11-20 11:11:40,847 INFO L899 garLoopResultBuilder]: For program point L67-1(lines 66 85) no Hoare annotation was computed. [2022-11-20 11:11:40,847 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 137) no Hoare annotation was computed. [2022-11-20 11:11:40,847 INFO L899 garLoopResultBuilder]: For program point L125(lines 125 142) no Hoare annotation was computed. [2022-11-20 11:11:40,847 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 63 86) the Hoare annotation is: (let ((.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (not (<= 0 ~methaneLevelCritical~0))) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (= ~methAndRunningLastTime~0 0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse5 (not (<= 1 |old(~pumpRunning~0)|)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1 (and (= ~pumpRunning~0 0) .cse2 .cse3) .cse4) (or .cse1 .cse5 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse3) .cse4) (or .cse0 .cse2 .cse1 .cse5 (not (<= 1 ~methaneLevelCritical~0))))) [2022-11-20 11:11:40,848 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 63 86) no Hoare annotation was computed. [2022-11-20 11:11:40,848 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 445) no Hoare annotation was computed. [2022-11-20 11:11:40,848 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 338) no Hoare annotation was computed. [2022-11-20 11:11:40,848 INFO L895 garLoopResultBuilder]: At program point L167(line 167) the Hoare annotation is: (let ((.cse1 (not (<= 1 |old(~pumpRunning~0)|))) (.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 0 ~methaneLevelCritical~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1 .cse2) (or .cse3 (= ~methAndRunningLastTime~0 0) .cse0 .cse1 (not (<= 1 ~methaneLevelCritical~0))) (or (not (= |old(~pumpRunning~0)| 0)) .cse3 .cse0 .cse2))) [2022-11-20 11:11:40,848 INFO L899 garLoopResultBuilder]: For program point L167-1(line 167) no Hoare annotation was computed. [2022-11-20 11:11:40,849 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 341) no Hoare annotation was computed. [2022-11-20 11:11:40,849 INFO L895 garLoopResultBuilder]: At program point L324-1(lines 316 344) the Hoare annotation is: (let ((.cse5 (= 1 ~systemActive~0))) (let ((.cse11 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse10 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse8 (not (<= ~methaneLevelCritical~0 0))) (.cse9 (not (<= 0 ~methaneLevelCritical~0))) (.cse14 (<= 1 ~pumpRunning~0)) (.cse6 (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| 0)) (.cse13 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse7 (<= 0 |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1|)) (.cse0 (not .cse5)) (.cse1 (not (<= 1 |old(~pumpRunning~0)|))) (.cse12 (not (<= 1 ~methaneLevelCritical~0))) (.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (= ~pumpRunning~0 0)) (.cse4 (= ~methAndRunningLastTime~0 0))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) .cse8 .cse9 (and .cse10 .cse4 .cse6 .cse7)) (or .cse2 .cse3 .cse11 (not (= |old(~waterLevel~0)| 1)) .cse0 .cse9) (or .cse2 .cse11 .cse0 .cse12 (and .cse10 .cse3 .cse4 .cse5 .cse13) (and .cse14 .cse13)) (or .cse2 .cse11 .cse0 (and .cse10 .cse3 .cse4 .cse5 .cse6 .cse13 .cse7) .cse8 .cse9 (and .cse14 .cse4 .cse6 .cse13 .cse7)) (or .cse0 .cse1 .cse12 (and .cse2 .cse3 .cse4 (<= 1 |timeShift_isMethaneAlarm_#res#1|) (<= 1 |timeShift_processEnvironment_~tmp~1#1|) .cse5))))) [2022-11-20 11:11:40,849 INFO L899 garLoopResultBuilder]: For program point L287(lines 287 291) no Hoare annotation was computed. [2022-11-20 11:11:40,849 INFO L895 garLoopResultBuilder]: At program point L287-2(lines 281 292) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (<= 0 ~methaneLevelCritical~0))) (or (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2) (and (<= 1 ~pumpRunning~0) .cse0 .cse1 .cse2))) [2022-11-20 11:11:40,850 INFO L902 garLoopResultBuilder]: At program point L886(lines 878 888) the Hoare annotation is: true [2022-11-20 11:11:40,850 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 277) no Hoare annotation was computed. [2022-11-20 11:11:40,850 INFO L902 garLoopResultBuilder]: At program point L911(lines 892 914) the Hoare annotation is: true [2022-11-20 11:11:40,850 INFO L899 garLoopResultBuilder]: For program point L271-1(lines 271 277) no Hoare annotation was computed. [2022-11-20 11:11:40,850 INFO L902 garLoopResultBuilder]: At program point L300(lines 241 304) the Hoare annotation is: true [2022-11-20 11:11:40,851 INFO L895 garLoopResultBuilder]: At program point L263(line 263) the Hoare annotation is: (let ((.cse1 (= ~methAndRunningLastTime~0 0)) (.cse4 (<= 0 ~methaneLevelCritical~0)) (.cse0 (<= 1 ~pumpRunning~0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and (= ~pumpRunning~0 0) .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 ~methaneLevelCritical~0) .cse2 .cse3))) [2022-11-20 11:11:40,851 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:11:40,851 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:11:40,851 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:11:40,851 INFO L895 garLoopResultBuilder]: At program point L313(lines 308 315) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= 1 ~systemActive~0) (<= ~methaneLevelCritical~0 0) (<= 0 ~methaneLevelCritical~0) (= ~waterLevel~0 1)) [2022-11-20 11:11:40,851 INFO L895 garLoopResultBuilder]: At program point L875(lines 871 877) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= 1 ~systemActive~0) (<= ~methaneLevelCritical~0 0) (<= 0 ~methaneLevelCritical~0) (= ~waterLevel~0 1)) [2022-11-20 11:11:40,852 INFO L895 garLoopResultBuilder]: At program point L297(lines 250 298) the Hoare annotation is: false [2022-11-20 11:11:40,852 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:11:40,852 INFO L899 garLoopResultBuilder]: For program point L252(lines 251 296) no Hoare annotation was computed. [2022-11-20 11:11:40,852 INFO L899 garLoopResultBuilder]: For program point L281(lines 281 292) no Hoare annotation was computed. [2022-11-20 11:11:40,852 INFO L895 garLoopResultBuilder]: At program point L946(lines 941 949) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= 1 ~systemActive~0) (<= ~methaneLevelCritical~0 0) (<= 0 ~methaneLevelCritical~0) (= ~waterLevel~0 1)) [2022-11-20 11:11:40,853 INFO L895 garLoopResultBuilder]: At program point L273(line 273) the Hoare annotation is: (let ((.cse1 (= ~methAndRunningLastTime~0 0)) (.cse4 (<= 0 ~methaneLevelCritical~0)) (.cse0 (<= 1 ~pumpRunning~0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and (= ~pumpRunning~0 0) .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 ~methaneLevelCritical~0) .cse2 .cse3))) [2022-11-20 11:11:40,853 INFO L895 garLoopResultBuilder]: At program point L938(lines 934 940) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= 1 ~systemActive~0) (<= ~methaneLevelCritical~0 0) (<= 0 ~methaneLevelCritical~0) (= ~waterLevel~0 1)) [2022-11-20 11:11:40,853 INFO L895 garLoopResultBuilder]: At program point L294(lines 251 296) the Hoare annotation is: (let ((.cse1 (= ~methAndRunningLastTime~0 0)) (.cse4 (<= 0 ~methaneLevelCritical~0)) (.cse0 (<= 1 ~pumpRunning~0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and (= ~pumpRunning~0 0) .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 ~methaneLevelCritical~0) .cse2 .cse3))) [2022-11-20 11:11:40,853 INFO L899 garLoopResultBuilder]: For program point L261(lines 261 267) no Hoare annotation was computed. [2022-11-20 11:11:40,853 INFO L899 garLoopResultBuilder]: For program point L261-1(lines 261 267) no Hoare annotation was computed. [2022-11-20 11:11:40,853 INFO L899 garLoopResultBuilder]: For program point L253(lines 253 257) no Hoare annotation was computed. [2022-11-20 11:11:40,854 INFO L899 garLoopResultBuilder]: For program point L902(lines 902 909) no Hoare annotation was computed. [2022-11-20 11:11:40,854 INFO L899 garLoopResultBuilder]: For program point L902-2(lines 902 909) no Hoare annotation was computed. [2022-11-20 11:11:40,854 INFO L895 garLoopResultBuilder]: At program point L931(lines 927 933) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= 1 ~systemActive~0) (<= ~methaneLevelCritical~0 0) (<= 0 ~methaneLevelCritical~0) (= ~waterLevel~0 1)) [2022-11-20 11:11:40,854 INFO L899 garLoopResultBuilder]: For program point L227-2(lines 227 231) no Hoare annotation was computed. [2022-11-20 11:11:40,854 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 95 119) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= 0 ~methaneLevelCritical~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 .cse1 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (<= 1 |old(~pumpRunning~0)|)) (not (<= ~methaneLevelCritical~0 0)) .cse1))) [2022-11-20 11:11:40,855 INFO L895 garLoopResultBuilder]: At program point L151(lines 146 153) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= ~methAndRunningLastTime~0 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 0 ~methaneLevelCritical~0)))) (and (or (<= 1 ~pumpRunning~0) .cse0 .cse1 .cse2 .cse3) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3) (or .cse1 (not (<= 1 |old(~pumpRunning~0)|)) (not (<= ~methaneLevelCritical~0 0)) .cse2))) [2022-11-20 11:11:40,855 INFO L895 garLoopResultBuilder]: At program point L114(line 114) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= 0 ~methaneLevelCritical~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (<= 1 |old(~pumpRunning~0)|)) (not (<= ~methaneLevelCritical~0 0)) .cse1))) [2022-11-20 11:11:40,855 INFO L899 garLoopResultBuilder]: For program point L114-1(lines 95 119) no Hoare annotation was computed. [2022-11-20 11:11:40,855 INFO L899 garLoopResultBuilder]: For program point L430(lines 430 436) no Hoare annotation was computed. [2022-11-20 11:11:40,855 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 95 119) no Hoare annotation was computed. [2022-11-20 11:11:40,856 INFO L895 garLoopResultBuilder]: At program point L435(lines 426 439) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= ~methAndRunningLastTime~0 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 0 ~methaneLevelCritical~0)))) (and (or .cse0 (= ~pumpRunning~0 0) .cse1 .cse2 .cse3) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (not (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| 0)) .cse2 .cse3) (or .cse1 (not (<= 1 |old(~pumpRunning~0)|)) (not (<= ~methaneLevelCritical~0 0)) .cse2))) [2022-11-20 11:11:40,856 INFO L895 garLoopResultBuilder]: At program point L109(line 109) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= ~methAndRunningLastTime~0 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 0 ~methaneLevelCritical~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and (not (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~tmp~2#1| 0)) (not (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| 0))) .cse2 .cse3) (or .cse0 .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 0)) .cse2 .cse3) (or .cse1 (not (<= 1 |old(~pumpRunning~0)|)) (not (<= ~methaneLevelCritical~0 0)) .cse2))) [2022-11-20 11:11:40,856 INFO L895 garLoopResultBuilder]: At program point L233(lines 218 236) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= ~methAndRunningLastTime~0 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 0 ~methaneLevelCritical~0)))) (and (or .cse0 (= ~pumpRunning~0 0) .cse1 .cse2 .cse3) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and (not (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~tmp~2#1| 0)) (not (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| 0)) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_#res#1| 0) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~tmp___0~0#1| 0)) .cse2 .cse3) (or .cse1 (not (<= 1 |old(~pumpRunning~0)|)) (not (<= ~methaneLevelCritical~0 0)) .cse2))) [2022-11-20 11:11:40,857 INFO L899 garLoopResultBuilder]: For program point L103(lines 103 111) no Hoare annotation was computed. [2022-11-20 11:11:40,857 INFO L899 garLoopResultBuilder]: For program point L99(lines 99 116) no Hoare annotation was computed. [2022-11-20 11:11:40,857 INFO L899 garLoopResultBuilder]: For program point L227(lines 227 231) no Hoare annotation was computed. [2022-11-20 11:11:40,857 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 361 372) no Hoare annotation was computed. [2022-11-20 11:11:40,857 INFO L899 garLoopResultBuilder]: For program point L365-1(lines 361 372) no Hoare annotation was computed. [2022-11-20 11:11:40,857 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 361 372) the Hoare annotation is: (let ((.cse1 (not (<= 1 ~pumpRunning~0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (<= 0 ~methaneLevelCritical~0))) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 (not (<= 1 ~methaneLevelCritical~0)) .cse1 .cse3) (or (not (= ~pumpRunning~0 0)) .cse0 .cse2 .cse3 .cse4))) [2022-11-20 11:11:40,861 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:40,863 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:11:40,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:11:40 BoogieIcfgContainer [2022-11-20 11:11:40,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:11:40,894 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:11:40,894 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:11:40,895 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:11:40,895 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:27" (3/4) ... [2022-11-20 11:11:40,899 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:11:40,905 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-20 11:11:40,906 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-20 11:11:40,906 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-20 11:11:40,906 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-20 11:11:40,906 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-20 11:11:40,907 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 11:11:40,907 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-20 11:11:40,914 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-20 11:11:40,915 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-20 11:11:40,915 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 11:11:40,916 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:11:40,916 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:11:40,946 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(0 <= methaneLevelCritical)) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) [2022-11-20 11:11:40,947 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) || (pumpRunning == 0 && methAndRunningLastTime == 0)) && (((!(1 == systemActive) || ((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= \result) && 1 <= tmp) && 1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || ((1 <= pumpRunning && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(0 <= methaneLevelCritical))) && ((((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || ((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(0 <= methaneLevelCritical)) [2022-11-20 11:11:40,948 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || (((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methAndRunningLastTime == 0) && 1 == systemActive) && tmp <= 0) && 0 <= tmp)) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || (((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && tmp <= 0) && 0 <= tmp)) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(1 <= methaneLevelCritical)) || ((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && 1 == systemActive) && \old(waterLevel) == waterLevel)) || (1 <= pumpRunning && \old(waterLevel) == waterLevel))) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && 1 == systemActive) && tmp <= 0) && \old(waterLevel) == waterLevel) && 0 <= tmp)) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || ((((1 <= pumpRunning && methAndRunningLastTime == 0) && tmp <= 0) && \old(waterLevel) == waterLevel) && 0 <= tmp))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical)) || (((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methAndRunningLastTime == 0) && 1 <= \result) && 1 <= tmp) && 1 == systemActive)) [2022-11-20 11:11:40,948 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(0 <= methaneLevelCritical)) && (((1 <= \result || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) [2022-11-20 11:11:40,949 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(1 <= methaneLevelCritical)) || (pumpRunning == 0 && methAndRunningLastTime == 0)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical)) || (((pumpRunning == 0 && 1 <= \result) && \result == 0) && 1 <= tmp))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((1 <= pumpRunning && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(1 <= methaneLevelCritical)) || ((pumpRunning == 0 && \result == 0) && \old(waterLevel) == waterLevel))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) [2022-11-20 11:11:40,949 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == 0 || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(0 <= methaneLevelCritical)) && ((((1 <= \result && 1 <= tmp) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) [2022-11-20 11:11:40,949 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) || !(methAndRunningLastTime == 0)) && (((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || !(\result == 0)) || !(0 <= methaneLevelCritical)) || !(methAndRunningLastTime == 0))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) [2022-11-20 11:11:40,950 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(0 <= methaneLevelCritical)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) [2022-11-20 11:11:40,950 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) || !(methAndRunningLastTime == 0)) && (((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || (((!(tmp == 0) && !(\result == 0)) && \result == 0) && tmp___0 == 0)) || !(0 <= methaneLevelCritical)) || !(methAndRunningLastTime == 0))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) [2022-11-20 11:11:40,950 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((1 <= pumpRunning || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) || !(methAndRunningLastTime == 0)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) || !(methAndRunningLastTime == 0))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) [2022-11-20 11:11:40,975 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:11:40,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:11:40,976 INFO L158 Benchmark]: Toolchain (without parser) took 14557.31ms. Allocated memory was 132.1MB in the beginning and 201.3MB in the end (delta: 69.2MB). Free memory was 99.4MB in the beginning and 99.3MB in the end (delta: 83.2kB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. [2022-11-20 11:11:40,976 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 132.1MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:11:40,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.53ms. Allocated memory is still 132.1MB. Free memory was 99.0MB in the beginning and 80.7MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 11:11:40,977 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.08ms. Allocated memory is still 132.1MB. Free memory was 80.7MB in the beginning and 78.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:11:40,978 INFO L158 Benchmark]: Boogie Preprocessor took 33.44ms. Allocated memory is still 132.1MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:11:40,978 INFO L158 Benchmark]: RCFGBuilder took 725.45ms. Allocated memory was 132.1MB in the beginning and 167.8MB in the end (delta: 35.7MB). Free memory was 77.3MB in the beginning and 134.4MB in the end (delta: -57.1MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2022-11-20 11:11:40,979 INFO L158 Benchmark]: TraceAbstraction took 13195.10ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 133.4MB in the beginning and 104.6MB in the end (delta: 28.8MB). Peak memory consumption was 119.0MB. Max. memory is 16.1GB. [2022-11-20 11:11:40,979 INFO L158 Benchmark]: Witness Printer took 81.12ms. Allocated memory is still 201.3MB. Free memory was 104.6MB in the beginning and 99.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 11:11:40,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 132.1MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 464.53ms. Allocated memory is still 132.1MB. Free memory was 99.0MB in the beginning and 80.7MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.08ms. Allocated memory is still 132.1MB. Free memory was 80.7MB in the beginning and 78.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.44ms. Allocated memory is still 132.1MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 725.45ms. Allocated memory was 132.1MB in the beginning and 167.8MB in the end (delta: 35.7MB). Free memory was 77.3MB in the beginning and 134.4MB in the end (delta: -57.1MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. * TraceAbstraction took 13195.10ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 133.4MB in the beginning and 104.6MB in the end (delta: 28.8MB). Peak memory consumption was 119.0MB. Max. memory is 16.1GB. * Witness Printer took 81.12ms. Allocated memory is still 201.3MB. Free memory was 104.6MB in the beginning and 99.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 445]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.1s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1135 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1106 mSDsluCounter, 3468 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2293 mSDsCounter, 266 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 910 IncrementalHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 266 mSolverCounterUnsat, 1175 mSDtfsCounter, 910 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 541 GetRequests, 450 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=408occurred in iteration=11, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 196 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 937 PreInvPairs, 1035 NumberOfFragments, 1767 HoareAnnotationTreeSize, 937 FomulaSimplifications, 74 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 40 FomulaSimplificationsInter, 6944 FormulaSimplificationTreeSizeReductionInter, 5.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 891 NumberOfCodeBlocks, 891 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 966 ConstructedInterpolants, 0 QuantifiedInterpolants, 2586 SizeOfPredicates, 8 NumberOfNonLiveVariables, 970 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 213/235 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 349]: Loop Invariant Derived loop invariant: ((((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(0 <= methaneLevelCritical)) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) - InvariantResult [Line: 927]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && methaneLevelCritical <= 0) && 0 <= methaneLevelCritical) && waterLevel == 1 - InvariantResult [Line: 892]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 426]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) || !(methAndRunningLastTime == 0)) && (((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || !(\result == 0)) || !(0 <= methaneLevelCritical)) || !(methAndRunningLastTime == 0))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) - InvariantResult [Line: 441]: Loop Invariant Derived loop invariant: ((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(0 <= methaneLevelCritical)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) - InvariantResult [Line: 941]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && methaneLevelCritical <= 0) && 0 <= methaneLevelCritical) && waterLevel == 1 - InvariantResult [Line: 308]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && methaneLevelCritical <= 0) && 0 <= methaneLevelCritical) && waterLevel == 1 - InvariantResult [Line: 827]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 817]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) || (pumpRunning == 0 && methAndRunningLastTime == 0)) && (((!(1 == systemActive) || ((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 <= \result) && 1 <= tmp) && 1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || ((1 <= pumpRunning && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(0 <= methaneLevelCritical))) && ((((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || ((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(0 <= methaneLevelCritical)) - InvariantResult [Line: 162]: Loop Invariant Derived loop invariant: (((((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(0 <= methaneLevelCritical)) && (((1 <= \result || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) - InvariantResult [Line: 251]: Loop Invariant Derived loop invariant: (((((1 <= pumpRunning && methAndRunningLastTime == 0) && 1 == systemActive) && splverifierCounter == 0) && 0 <= methaneLevelCritical) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && splverifierCounter == 0) && 0 <= methaneLevelCritical)) || (((1 <= pumpRunning && 1 <= methaneLevelCritical) && 1 == systemActive) && splverifierCounter == 0) - InvariantResult [Line: 871]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && methaneLevelCritical <= 0) && 0 <= methaneLevelCritical) && waterLevel == 1 - InvariantResult [Line: 218]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) || !(methAndRunningLastTime == 0)) && (((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || (((!(tmp == 0) && !(\result == 0)) && \result == 0) && tmp___0 == 0)) || !(0 <= methaneLevelCritical)) || !(methAndRunningLastTime == 0))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) - InvariantResult [Line: 934]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && methaneLevelCritical <= 0) && 0 <= methaneLevelCritical) && waterLevel == 1 - InvariantResult [Line: 316]: Loop Invariant Derived loop invariant: ((((((((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || (((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methAndRunningLastTime == 0) && 1 == systemActive) && tmp <= 0) && 0 <= tmp)) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || (((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && tmp <= 0) && 0 <= tmp)) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(1 <= methaneLevelCritical)) || ((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && 1 == systemActive) && \old(waterLevel) == waterLevel)) || (1 <= pumpRunning && \old(waterLevel) == waterLevel))) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && 1 == systemActive) && tmp <= 0) && \old(waterLevel) == waterLevel) && 0 <= tmp)) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) || ((((1 <= pumpRunning && methAndRunningLastTime == 0) && tmp <= 0) && \old(waterLevel) == waterLevel) && 0 <= tmp))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical)) || (((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methAndRunningLastTime == 0) && 1 <= \result) && 1 <= tmp) && 1 == systemActive)) - InvariantResult [Line: 154]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(0 <= methaneLevelCritical)) && ((((1 <= \result && 1 <= tmp) || !(1 == systemActive)) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: (((((1 <= pumpRunning || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) || !(methAndRunningLastTime == 0)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || !(0 <= methaneLevelCritical)) || !(methAndRunningLastTime == 0))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) - InvariantResult [Line: 878]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 250]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 241]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 173]: Loop Invariant Derived loop invariant: ((((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(1 <= methaneLevelCritical)) || (pumpRunning == 0 && methAndRunningLastTime == 0)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(1 <= methaneLevelCritical)) || (((pumpRunning == 0 && 1 <= \result) && \result == 0) && 1 <= tmp))) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((1 <= pumpRunning && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(1 <= methaneLevelCritical)) || ((pumpRunning == 0 && \result == 0) && \old(waterLevel) == waterLevel))) && (((!(1 == systemActive) || !(1 <= \old(pumpRunning))) || !(methaneLevelCritical <= 0)) || !(0 <= methaneLevelCritical)) RESULT: Ultimate proved your program to be correct! [2022-11-20 11:11:41,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_433c3fa6-5ce8-4089-9944-3366b0aefab1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE