./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL --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 6e02099a7691e56a2269c7f6adf0fcb5caba1ee7f52ae5d6ac320766d29d8d07 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:02:06,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:02:06,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:02:06,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:02:06,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:02:06,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:02:06,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:02:06,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:02:06,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:02:06,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:02:06,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:02:06,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:02:06,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:02:06,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:02:06,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:02:06,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:02:06,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:02:06,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:02:06,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:02:06,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:02:06,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:02:06,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:02:06,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:02:06,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:02:06,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:02:06,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:02:06,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:02:06,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:02:06,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:02:06,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:02:06,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:02:06,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:02:06,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:02:06,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:02:06,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:02:06,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:02:06,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:02:06,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:02:06,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:02:06,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:02:06,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:02:06,802 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:02:06,850 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:02:06,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:02:06,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:02:06,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:02:06,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:02:06,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:02:06,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:02:06,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:02:06,855 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:02:06,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:02:06,855 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:02:06,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:02:06,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:02:06,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:02:06,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:02:06,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:02:06,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:02:06,858 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:02:06,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:02:06,858 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:02:06,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:02:06,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:02:06,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:02:06,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:02:06,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:02:06,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:02:06,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:02:06,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:02:06,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:02:06,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:02:06,862 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:02:06,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:02:06,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:02:06,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:02:06,863 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_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e02099a7691e56a2269c7f6adf0fcb5caba1ee7f52ae5d6ac320766d29d8d07 [2021-11-19 05:02:07,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:02:07,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:02:07,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:02:07,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:02:07,321 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:02:07,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2021-11-19 05:02:07,421 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/data/6481f730c/b2ad574211d04aacadc7a5258679d67d/FLAG517ccc97d [2021-11-19 05:02:08,119 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:02:08,120 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2021-11-19 05:02:08,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/data/6481f730c/b2ad574211d04aacadc7a5258679d67d/FLAG517ccc97d [2021-11-19 05:02:08,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/data/6481f730c/b2ad574211d04aacadc7a5258679d67d [2021-11-19 05:02:08,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:02:08,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:02:08,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:02:08,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:02:08,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:02:08,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:08" (1/1) ... [2021-11-19 05:02:08,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1154880e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:08, skipping insertion in model container [2021-11-19 05:02:08,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:08" (1/1) ... [2021-11-19 05:02:08,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:02:08,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:02:08,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c[4842,4855] [2021-11-19 05:02:08,978 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:02:08,998 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:02:09,054 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c[4842,4855] [2021-11-19 05:02:09,123 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:02:09,146 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:02:09,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:09 WrapperNode [2021-11-19 05:02:09,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:02:09,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:02:09,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:02:09,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:02:09,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:09" (1/1) ... [2021-11-19 05:02:09,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:09" (1/1) ... [2021-11-19 05:02:09,210 INFO L137 Inliner]: procedures = 53, calls = 150, calls flagged for inlining = 20, calls inlined = 17, statements flattened = 225 [2021-11-19 05:02:09,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:02:09,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:02:09,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:02:09,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:02:09,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:09" (1/1) ... [2021-11-19 05:02:09,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:09" (1/1) ... [2021-11-19 05:02:09,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:09" (1/1) ... [2021-11-19 05:02:09,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:09" (1/1) ... [2021-11-19 05:02:09,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:09" (1/1) ... [2021-11-19 05:02:09,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:09" (1/1) ... [2021-11-19 05:02:09,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:09" (1/1) ... [2021-11-19 05:02:09,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:02:09,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:02:09,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:02:09,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:02:09,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:09" (1/1) ... [2021-11-19 05:02:09,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:02:09,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:02:09,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:02:09,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:02:09,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:02:09,409 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-19 05:02:09,409 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-19 05:02:09,409 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-19 05:02:09,409 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-19 05:02:09,410 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-19 05:02:09,410 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-19 05:02:09,410 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-19 05:02:09,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-19 05:02:09,411 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-19 05:02:09,411 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-19 05:02:09,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:02:09,411 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-19 05:02:09,412 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-19 05:02:09,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:02:09,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:02:09,544 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:02:09,547 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:02:10,003 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:02:10,021 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:02:10,021 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 05:02:10,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:10 BoogieIcfgContainer [2021-11-19 05:02:10,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:02:10,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:02:10,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:02:10,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:02:10,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:02:08" (1/3) ... [2021-11-19 05:02:10,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2eb703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:10, skipping insertion in model container [2021-11-19 05:02:10,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:09" (2/3) ... [2021-11-19 05:02:10,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2eb703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:10, skipping insertion in model container [2021-11-19 05:02:10,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:10" (3/3) ... [2021-11-19 05:02:10,040 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product33.cil.c [2021-11-19 05:02:10,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:02:10,054 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:02:10,118 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:02:10,126 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:02:10,127 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:02:10,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 65 states have internal predecessors, (83), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-19 05:02:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 05:02:10,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:10,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:10,163 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:02:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:10,171 INFO L85 PathProgramCache]: Analyzing trace with hash 233303130, now seen corresponding path program 1 times [2021-11-19 05:02:10,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:10,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145292648] [2021-11-19 05:02:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:10,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-19 05:02:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:10,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:10,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145292648] [2021-11-19 05:02:10,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145292648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:10,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:10,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:02:10,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618542623] [2021-11-19 05:02:10,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:10,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:02:10,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:10,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:02:10,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:02:10,519 INFO L87 Difference]: Start difference. First operand has 76 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 65 states have internal predecessors, (83), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) 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) [2021-11-19 05:02:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:10,583 INFO L93 Difference]: Finished difference Result 143 states and 196 transitions. [2021-11-19 05:02:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:02:10,586 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 [2021-11-19 05:02:10,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:10,605 INFO L225 Difference]: With dead ends: 143 [2021-11-19 05:02:10,606 INFO L226 Difference]: Without dead ends: 67 [2021-11-19 05:02:10,611 INFO L932 BasicCegarLoop]: 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 [2021-11-19 05:02:10,617 INFO L933 BasicCegarLoop]: 95 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, 95 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:10,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:02:10,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-19 05:02:10,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-19 05:02:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 57 states have internal predecessors, (69), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 05:02:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2021-11-19 05:02:10,701 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 25 [2021-11-19 05:02:10,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:10,703 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2021-11-19 05:02:10,703 INFO L471 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) [2021-11-19 05:02:10,704 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2021-11-19 05:02:10,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 05:02:10,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:10,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:10,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:02:10,711 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:02:10,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:10,716 INFO L85 PathProgramCache]: Analyzing trace with hash 724752093, now seen corresponding path program 1 times [2021-11-19 05:02:10,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:10,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034525161] [2021-11-19 05:02:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:10,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:10,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-19 05:02:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:10,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:10,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034525161] [2021-11-19 05:02:10,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034525161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:10,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:10,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:02:10,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404051431] [2021-11-19 05:02:10,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:10,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:02:10,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:02:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:02:10,935 INFO L87 Difference]: Start difference. First operand 67 states and 86 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) [2021-11-19 05:02:10,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:10,956 INFO L93 Difference]: Finished difference Result 99 states and 127 transitions. [2021-11-19 05:02:10,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:02:10,957 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 [2021-11-19 05:02:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:10,959 INFO L225 Difference]: With dead ends: 99 [2021-11-19 05:02:10,959 INFO L226 Difference]: Without dead ends: 58 [2021-11-19 05:02:10,961 INFO L932 BasicCegarLoop]: 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 [2021-11-19 05:02:10,963 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 12 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:10,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 130 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:02:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-19 05:02:10,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-19 05:02:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 51 states have internal predecessors, (62), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-19 05:02:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2021-11-19 05:02:10,975 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 26 [2021-11-19 05:02:10,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:10,976 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2021-11-19 05:02:10,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-19 05:02:10,976 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2021-11-19 05:02:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 05:02:10,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:10,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:10,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:02:10,979 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:02:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:10,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2055382337, now seen corresponding path program 1 times [2021-11-19 05:02:10,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:10,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073825162] [2021-11-19 05:02:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:10,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:11,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-19 05:02:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:11,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:11,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073825162] [2021-11-19 05:02:11,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073825162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:11,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:11,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:02:11,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14317461] [2021-11-19 05:02:11,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:11,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:02:11,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:11,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:02:11,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:02:11,122 INFO L87 Difference]: Start difference. First operand 58 states and 74 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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) [2021-11-19 05:02:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:11,224 INFO L93 Difference]: Finished difference Result 108 states and 141 transitions. [2021-11-19 05:02:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:02:11,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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 [2021-11-19 05:02:11,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:11,227 INFO L225 Difference]: With dead ends: 108 [2021-11-19 05:02:11,227 INFO L226 Difference]: Without dead ends: 58 [2021-11-19 05:02:11,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:02:11,230 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 102 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:11,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 149 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:02:11,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-19 05:02:11,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-19 05:02:11,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.326086956521739) internal successors, (61), 51 states have internal predecessors, (61), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-19 05:02:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2021-11-19 05:02:11,245 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 30 [2021-11-19 05:02:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:11,246 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2021-11-19 05:02:11,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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) [2021-11-19 05:02:11,246 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2021-11-19 05:02:11,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 05:02:11,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:11,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:11,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:02:11,249 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:02:11,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1540812236, now seen corresponding path program 1 times [2021-11-19 05:02:11,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:11,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865264167] [2021-11-19 05:02:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:11,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-19 05:02:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:11,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:02:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:11,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:11,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865264167] [2021-11-19 05:02:11,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865264167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:11,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:11,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:02:11,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225914511] [2021-11-19 05:02:11,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:11,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:02:11,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:11,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:02:11,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:02:11,352 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:02:11,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:11,428 INFO L93 Difference]: Finished difference Result 147 states and 190 transitions. [2021-11-19 05:02:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:02:11,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2021-11-19 05:02:11,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:11,442 INFO L225 Difference]: With dead ends: 147 [2021-11-19 05:02:11,445 INFO L226 Difference]: Without dead ends: 97 [2021-11-19 05:02:11,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:02:11,450 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 46 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:11,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 142 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:02:11,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-19 05:02:11,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2021-11-19 05:02:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 80 states have internal predecessors, (98), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2021-11-19 05:02:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 120 transitions. [2021-11-19 05:02:11,494 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 120 transitions. Word has length 35 [2021-11-19 05:02:11,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:11,494 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 120 transitions. [2021-11-19 05:02:11,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:02:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 120 transitions. [2021-11-19 05:02:11,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 05:02:11,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:11,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:11,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:02:11,498 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:02:11,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:11,499 INFO L85 PathProgramCache]: Analyzing trace with hash 418627801, now seen corresponding path program 1 times [2021-11-19 05:02:11,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:11,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015881301] [2021-11-19 05:02:11,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:11,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 05:02:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:11,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:11,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015881301] [2021-11-19 05:02:11,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015881301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:11,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:11,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:02:11,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410387309] [2021-11-19 05:02:11,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:11,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:02:11,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:11,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:02:11,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:02:11,573 INFO L87 Difference]: Start difference. First operand 95 states and 120 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-19 05:02:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:11,656 INFO L93 Difference]: Finished difference Result 259 states and 343 transitions. [2021-11-19 05:02:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:02:11,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 39 [2021-11-19 05:02:11,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:11,665 INFO L225 Difference]: With dead ends: 259 [2021-11-19 05:02:11,665 INFO L226 Difference]: Without dead ends: 172 [2021-11-19 05:02:11,667 INFO L932 BasicCegarLoop]: 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 [2021-11-19 05:02:11,668 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 42 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:11,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 136 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:02:11,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-19 05:02:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2021-11-19 05:02:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 133 states have (on average 1.3233082706766917) internal successors, (176), 141 states have internal predecessors, (176), 19 states have call successors, (19), 19 states have call predecessors, (19), 17 states have return successors, (25), 17 states have call predecessors, (25), 19 states have call successors, (25) [2021-11-19 05:02:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 220 transitions. [2021-11-19 05:02:11,733 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 220 transitions. Word has length 39 [2021-11-19 05:02:11,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:11,733 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 220 transitions. [2021-11-19 05:02:11,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-19 05:02:11,734 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 220 transitions. [2021-11-19 05:02:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 05:02:11,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:11,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:11,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:02:11,740 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:02:11,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:11,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2107571543, now seen corresponding path program 1 times [2021-11-19 05:02:11,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:11,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20588785] [2021-11-19 05:02:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:11,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 05:02:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:11,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:11,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20588785] [2021-11-19 05:02:11,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20588785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:11,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:11,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:02:11,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685081316] [2021-11-19 05:02:11,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:11,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:02:11,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:11,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:02:11,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:02:11,882 INFO L87 Difference]: Start difference. First operand 170 states and 220 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:02:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:11,993 INFO L93 Difference]: Finished difference Result 366 states and 484 transitions. [2021-11-19 05:02:11,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:02:11,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 1 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 39 [2021-11-19 05:02:11,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:11,999 INFO L225 Difference]: With dead ends: 366 [2021-11-19 05:02:12,000 INFO L226 Difference]: Without dead ends: 204 [2021-11-19 05:02:12,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:02:12,003 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 56 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:12,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 334 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:02:12,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-19 05:02:12,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 176. [2021-11-19 05:02:12,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 139 states have (on average 1.3093525179856116) internal successors, (182), 147 states have internal predecessors, (182), 19 states have call successors, (19), 19 states have call predecessors, (19), 17 states have return successors, (25), 17 states have call predecessors, (25), 19 states have call successors, (25) [2021-11-19 05:02:12,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 226 transitions. [2021-11-19 05:02:12,044 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 226 transitions. Word has length 39 [2021-11-19 05:02:12,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:12,045 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 226 transitions. [2021-11-19 05:02:12,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:02:12,045 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 226 transitions. [2021-11-19 05:02:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 05:02:12,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:12,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:12,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:02:12,048 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:02:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:12,049 INFO L85 PathProgramCache]: Analyzing trace with hash 519223641, now seen corresponding path program 1 times [2021-11-19 05:02:12,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:12,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253028004] [2021-11-19 05:02:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:12,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-19 05:02:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:12,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:12,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253028004] [2021-11-19 05:02:12,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253028004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:12,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:12,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:02:12,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388098924] [2021-11-19 05:02:12,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:12,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:02:12,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:12,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:02:12,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:02:12,140 INFO L87 Difference]: Start difference. First operand 176 states and 226 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:02:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:12,224 INFO L93 Difference]: Finished difference Result 341 states and 443 transitions. [2021-11-19 05:02:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:02:12,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 1 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 39 [2021-11-19 05:02:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:12,227 INFO L225 Difference]: With dead ends: 341 [2021-11-19 05:02:12,227 INFO L226 Difference]: Without dead ends: 173 [2021-11-19 05:02:12,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:02:12,230 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 84 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:12,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 330 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:02:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-19 05:02:12,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 142. [2021-11-19 05:02:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 112 states have (on average 1.2857142857142858) internal successors, (144), 119 states have internal predecessors, (144), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2021-11-19 05:02:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 176 transitions. [2021-11-19 05:02:12,249 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 176 transitions. Word has length 39 [2021-11-19 05:02:12,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:12,250 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 176 transitions. [2021-11-19 05:02:12,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:02:12,250 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 176 transitions. [2021-11-19 05:02:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-19 05:02:12,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:12,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:12,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:02:12,253 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:02:12,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:12,253 INFO L85 PathProgramCache]: Analyzing trace with hash 554996476, now seen corresponding path program 1 times [2021-11-19 05:02:12,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:12,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516667731] [2021-11-19 05:02:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:12,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:12,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-19 05:02:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-19 05:02:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:12,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:12,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516667731] [2021-11-19 05:02:12,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516667731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:12,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:12,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:02:12,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267367017] [2021-11-19 05:02:12,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:12,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:02:12,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:12,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:02:12,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:02:12,377 INFO L87 Difference]: Start difference. First operand 142 states and 176 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:02:12,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:12,491 INFO L93 Difference]: Finished difference Result 408 states and 518 transitions. [2021-11-19 05:02:12,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:02:12,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2021-11-19 05:02:12,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:12,507 INFO L225 Difference]: With dead ends: 408 [2021-11-19 05:02:12,507 INFO L226 Difference]: Without dead ends: 274 [2021-11-19 05:02:12,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:02:12,512 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 37 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:12,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 345 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:02:12,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-19 05:02:12,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 265. [2021-11-19 05:02:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 206 states have (on average 1.2524271844660195) internal successors, (258), 219 states have internal predecessors, (258), 30 states have call successors, (30), 30 states have call predecessors, (30), 28 states have return successors, (37), 28 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-19 05:02:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 325 transitions. [2021-11-19 05:02:12,568 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 325 transitions. Word has length 41 [2021-11-19 05:02:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:12,568 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 325 transitions. [2021-11-19 05:02:12,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:02:12,569 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 325 transitions. [2021-11-19 05:02:12,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 05:02:12,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:12,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:12,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 05:02:12,571 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:02:12,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:12,572 INFO L85 PathProgramCache]: Analyzing trace with hash -167821216, now seen corresponding path program 1 times [2021-11-19 05:02:12,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:12,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653000346] [2021-11-19 05:02:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:12,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-19 05:02:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-19 05:02:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-19 05:02:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:12,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:12,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653000346] [2021-11-19 05:02:12,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653000346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:12,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:12,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:02:12,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056001407] [2021-11-19 05:02:12,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:12,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:02:12,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:12,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:02:12,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:02:12,661 INFO L87 Difference]: Start difference. First operand 265 states and 325 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:02:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:12,919 INFO L93 Difference]: Finished difference Result 529 states and 652 transitions. [2021-11-19 05:02:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:02:12,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (4), 3 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 45 [2021-11-19 05:02:12,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:12,926 INFO L225 Difference]: With dead ends: 529 [2021-11-19 05:02:12,926 INFO L226 Difference]: Without dead ends: 272 [2021-11-19 05:02:12,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:02:12,931 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 85 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:12,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 196 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:02:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-19 05:02:12,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 263. [2021-11-19 05:02:12,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 204 states have (on average 1.2352941176470589) internal successors, (252), 217 states have internal predecessors, (252), 30 states have call successors, (30), 30 states have call predecessors, (30), 28 states have return successors, (37), 28 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-19 05:02:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 319 transitions. [2021-11-19 05:02:12,964 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 319 transitions. Word has length 45 [2021-11-19 05:02:12,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:12,965 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 319 transitions. [2021-11-19 05:02:12,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 05:02:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 319 transitions. [2021-11-19 05:02:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-19 05:02:12,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:12,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:12,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 05:02:12,968 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:02:12,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:12,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1482931365, now seen corresponding path program 1 times [2021-11-19 05:02:12,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:12,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571406440] [2021-11-19 05:02:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:12,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:02:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:02:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:13,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-19 05:02:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:13,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:13,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571406440] [2021-11-19 05:02:13,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571406440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:13,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:13,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:02:13,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338487804] [2021-11-19 05:02:13,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:13,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:02:13,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:13,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:02:13,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:02:13,066 INFO L87 Difference]: Start difference. First operand 263 states and 319 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-19 05:02:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:13,395 INFO L93 Difference]: Finished difference Result 524 states and 653 transitions. [2021-11-19 05:02:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:02:13,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 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 47 [2021-11-19 05:02:13,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:13,401 INFO L225 Difference]: With dead ends: 524 [2021-11-19 05:02:13,401 INFO L226 Difference]: Without dead ends: 522 [2021-11-19 05:02:13,402 INFO L932 BasicCegarLoop]: 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 [2021-11-19 05:02:13,403 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 198 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:13,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 144 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:02:13,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-11-19 05:02:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 411. [2021-11-19 05:02:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 324 states have (on average 1.2469135802469136) internal successors, (404), 351 states have internal predecessors, (404), 45 states have call successors, (45), 35 states have call predecessors, (45), 41 states have return successors, (67), 43 states have call predecessors, (67), 45 states have call successors, (67) [2021-11-19 05:02:13,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 516 transitions. [2021-11-19 05:02:13,449 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 516 transitions. Word has length 47 [2021-11-19 05:02:13,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:13,450 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 516 transitions. [2021-11-19 05:02:13,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-19 05:02:13,450 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 516 transitions. [2021-11-19 05:02:13,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 05:02:13,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:13,454 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 05:02:13,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 05:02:13,455 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:02:13,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1221722552, now seen corresponding path program 1 times [2021-11-19 05:02:13,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:13,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713560773] [2021-11-19 05:02:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:13,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:02:13,484 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:02:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:02:13,565 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:02:13,565 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:02:13,567 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 05:02:13,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 05:02:13,574 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:13,578 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:02:13,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:02:13 BoogieIcfgContainer [2021-11-19 05:02:13,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:02:13,726 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:02:13,726 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:02:13,726 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:02:13,727 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:10" (3/4) ... [2021-11-19 05:02:13,730 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 05:02:13,850 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:02:13,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:02:13,862 INFO L158 Benchmark]: Toolchain (without parser) took 5500.43ms. Allocated memory was 92.3MB in the beginning and 157.3MB in the end (delta: 65.0MB). Free memory was 56.7MB in the beginning and 117.4MB in the end (delta: -60.6MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-11-19 05:02:13,862 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 92.3MB. Free memory was 61.9MB in the beginning and 61.9MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:02:13,863 INFO L158 Benchmark]: CACSL2BoogieTranslator took 782.19ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 56.7MB in the beginning and 88.8MB in the end (delta: -32.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:02:13,864 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.52ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:02:13,864 INFO L158 Benchmark]: Boogie Preprocessor took 76.89ms. Allocated memory is still 121.6MB. Free memory was 86.7MB in the beginning and 85.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:02:13,865 INFO L158 Benchmark]: RCFGBuilder took 729.43ms. Allocated memory is still 121.6MB. Free memory was 85.3MB in the beginning and 69.9MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 05:02:13,866 INFO L158 Benchmark]: TraceAbstraction took 3699.60ms. Allocated memory was 121.6MB in the beginning and 157.3MB in the end (delta: 35.7MB). Free memory was 69.2MB in the beginning and 125.7MB in the end (delta: -56.5MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2021-11-19 05:02:13,867 INFO L158 Benchmark]: Witness Printer took 134.94ms. Allocated memory is still 157.3MB. Free memory was 125.7MB in the beginning and 117.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:02:13,874 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 92.3MB. Free memory was 61.9MB in the beginning and 61.9MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 782.19ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 56.7MB in the beginning and 88.8MB in the end (delta: -32.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.52ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.89ms. Allocated memory is still 121.6MB. Free memory was 86.7MB in the beginning and 85.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 729.43ms. Allocated memory is still 121.6MB. Free memory was 85.3MB in the beginning and 69.9MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3699.60ms. Allocated memory was 121.6MB in the beginning and 157.3MB in the end (delta: 35.7MB). Free memory was 69.2MB in the beginning and 125.7MB in the end (delta: -56.5MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. * Witness Printer took 134.94ms. Allocated memory is still 157.3MB. Free memory was 125.7MB in the beginning and 117.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 294]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L95] int waterLevel = 1; [L96] int methaneLevelCritical = 0; [L189] int cleanupTimeShifts = 4; [L302] int pumpRunning = 0; [L303] int systemActive = 1; [L689] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L886] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L267] int retValue_acc ; [L268] int tmp ; [L272] FCALL select_helpers() [L273] FCALL select_features() [L274] CALL, EXPR valid_product() [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L274] RET, EXPR valid_product() [L274] tmp = valid_product() [L276] COND TRUE \read(tmp) [L278] FCALL setup() [L279] CALL runTest() [L260] CALL __utac_acc__Specification2_spec__1() [L891] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L260] RET __utac_acc__Specification2_spec__1() [L261] CALL test() [L456] int splverifierCounter ; [L457] int tmp ; [L458] int tmp___0 ; [L459] int tmp___1 ; [L460] int tmp___2 ; [L463] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L465] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L467] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L473] tmp = __VERIFIER_nondet_int() [L475] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L477] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L113] COND TRUE waterLevel < 2 [L114] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L477] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L483] tmp___0 = __VERIFIER_nondet_int() [L485] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L487] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L125] COND FALSE !(\read(methaneLevelCritical)) [L128] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L487] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L493] tmp___2 = __VERIFIER_nondet_int() [L495] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=-1, waterLevel=2] [L508] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L310] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L317] COND TRUE \read(systemActive) [L319] CALL processEnvironment() [L339] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L342] COND TRUE ! pumpRunning [L344] CALL, EXPR isHighWaterLevel() [L436] int retValue_acc ; [L437] int tmp ; [L438] int tmp___0 ; [L442] CALL, EXPR isHighWaterSensorDry() [L175] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L178] COND FALSE !(waterLevel < 2) [L182] retValue_acc = 0 [L183] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L442] RET, EXPR isHighWaterSensorDry() [L442] tmp = isHighWaterSensorDry() [L444] COND FALSE !(\read(tmp)) [L447] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L449] retValue_acc = tmp___0 [L450] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L344] RET, EXPR isHighWaterLevel() [L344] tmp = isHighWaterLevel() [L346] COND TRUE \read(tmp) [L348] CALL activatePump() [L367] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L348] RET activatePump() [L319] RET processEnvironment() [L325] CALL __utac_acc__Specification2_spec__2() [L896] int tmp ; [L897] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L901] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L134] int retValue_acc ; [L137] retValue_acc = methaneLevelCritical [L138] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L901] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L901] tmp = isMethaneLevelCritical() [L903] COND TRUE \read(tmp) [L905] CALL, EXPR isPumpRunning() [L391] int retValue_acc ; [L394] retValue_acc = pumpRunning [L395] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L905] RET, EXPR isPumpRunning() [L905] tmp___0 = isPumpRunning() [L907] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L908] COND FALSE !(\read(methAndRunningLastTime)) [L913] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L325] RET __utac_acc__Specification2_spec__2() [L508] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=-1, waterLevel=2] [L465] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=-1, waterLevel=2] [L467] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=-1, waterLevel=2] [L473] tmp = __VERIFIER_nondet_int() [L475] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-1, waterLevel=2] [L483] tmp___0 = __VERIFIER_nondet_int() [L485] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L493] tmp___2 = __VERIFIER_nondet_int() [L495] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=2] [L508] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L310] COND TRUE \read(pumpRunning) [L312] CALL lowerWaterLevel() [L101] COND TRUE waterLevel > 0 [L102] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L312] RET lowerWaterLevel() [L317] COND TRUE \read(systemActive) [L319] CALL processEnvironment() [L339] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L342] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L357] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L319] RET processEnvironment() [L325] CALL __utac_acc__Specification2_spec__2() [L896] int tmp ; [L897] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L901] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L134] int retValue_acc ; [L137] retValue_acc = methaneLevelCritical [L138] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L901] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L901] tmp = isMethaneLevelCritical() [L903] COND TRUE \read(tmp) [L905] CALL, EXPR isPumpRunning() [L391] int retValue_acc ; [L394] retValue_acc = pumpRunning [L395] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L905] RET, EXPR isPumpRunning() [L905] tmp___0 = isPumpRunning() [L907] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L908] COND TRUE \read(methAndRunningLastTime) [L910] CALL __automaton_fail() [L294] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 677 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 662 mSDsluCounter, 2001 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1215 mSDsCounter, 133 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 397 IncrementalHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 133 mSolverCounterUnsat, 786 mSDtfsCounter, 397 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=411occurred in iteration=10, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 192 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 356 ConstructedInterpolants, 0 QuantifiedInterpolants, 703 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 05:02:13,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68855cd0-c108-4bda-82af-58b90a68a78e/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE