./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ --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 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:09:20,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:09:20,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:09:20,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:09:20,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:09:20,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:09:20,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:09:20,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:09:20,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:09:20,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:09:20,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:09:20,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:09:20,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:09:20,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:09:20,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:09:20,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:09:20,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:09:20,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:09:20,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:09:20,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:09:20,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:09:20,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:09:20,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:09:20,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:09:20,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:09:20,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:09:20,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:09:20,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:09:20,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:09:20,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:09:20,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:09:20,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:09:20,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:09:20,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:09:20,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:09:20,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:09:20,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:09:20,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:09:20,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:09:20,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:09:20,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:09:20,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:09:20,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:09:20,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:09:20,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:09:20,636 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:09:20,637 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:09:20,637 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:09:20,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:09:20,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:09:20,638 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:09:20,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:09:20,639 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:09:20,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:09:20,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:09:20,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:09:20,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:09:20,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:09:20,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:09:20,641 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:09:20,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:09:20,641 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:09:20,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:09:20,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:09:20,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:09:20,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:09:20,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:09:20,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:09:20,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:09:20,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:09:20,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:09:20,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:09:20,643 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:09:20,643 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:09:20,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:09:20,644 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_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e [2022-10-17 10:09:20,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:09:20,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:09:20,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:09:20,914 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:09:20,915 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:09:20,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2022-10-17 10:09:20,981 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/data/c325ffa3f/60c9fa3534c245358ce5bd77017272d7/FLAGd7f5468d8 [2022-10-17 10:09:21,632 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:09:21,632 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2022-10-17 10:09:21,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/data/c325ffa3f/60c9fa3534c245358ce5bd77017272d7/FLAGd7f5468d8 [2022-10-17 10:09:21,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/data/c325ffa3f/60c9fa3534c245358ce5bd77017272d7 [2022-10-17 10:09:21,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:09:21,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:09:21,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:09:21,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:09:21,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:09:21,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:09:21" (1/1) ... [2022-10-17 10:09:21,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ad79d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:21, skipping insertion in model container [2022-10-17 10:09:21,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:09:21" (1/1) ... [2022-10-17 10:09:21,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:09:21,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:09:22,202 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_716890ef-8fdd-469f-895b-a8730f2e8638/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2022-10-17 10:09:22,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:09:22,376 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:09:22,426 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_716890ef-8fdd-469f-895b-a8730f2e8638/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2022-10-17 10:09:22,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:09:22,576 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:09:22,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22 WrapperNode [2022-10-17 10:09:22,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:09:22,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:09:22,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:09:22,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:09:22,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22" (1/1) ... [2022-10-17 10:09:22,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22" (1/1) ... [2022-10-17 10:09:22,683 INFO L138 Inliner]: procedures = 89, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 842 [2022-10-17 10:09:22,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:09:22,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:09:22,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:09:22,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:09:22,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22" (1/1) ... [2022-10-17 10:09:22,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22" (1/1) ... [2022-10-17 10:09:22,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22" (1/1) ... [2022-10-17 10:09:22,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22" (1/1) ... [2022-10-17 10:09:22,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22" (1/1) ... [2022-10-17 10:09:22,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22" (1/1) ... [2022-10-17 10:09:22,740 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22" (1/1) ... [2022-10-17 10:09:22,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22" (1/1) ... [2022-10-17 10:09:22,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:09:22,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:09:22,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:09:22,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:09:22,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22" (1/1) ... [2022-10-17 10:09:22,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:09:22,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:09:22,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:09:22,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716890ef-8fdd-469f-895b-a8730f2e8638/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:09:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:09:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-10-17 10:09:22,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-10-17 10:09:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-10-17 10:09:22,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-10-17 10:09:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-10-17 10:09:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-10-17 10:09:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-10-17 10:09:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-10-17 10:09:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-10-17 10:09:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-10-17 10:09:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-10-17 10:09:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-10-17 10:09:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-10-17 10:09:22,850 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-10-17 10:09:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-10-17 10:09:22,850 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-10-17 10:09:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-10-17 10:09:22,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-10-17 10:09:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-10-17 10:09:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-10-17 10:09:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-10-17 10:09:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-10-17 10:09:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-10-17 10:09:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-10-17 10:09:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-10-17 10:09:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-10-17 10:09:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-10-17 10:09:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-10-17 10:09:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-10-17 10:09:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-10-17 10:09:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-10-17 10:09:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-10-17 10:09:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-10-17 10:09:22,852 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-10-17 10:09:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-10-17 10:09:22,853 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-10-17 10:09:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-10-17 10:09:22,853 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-10-17 10:09:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:09:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-10-17 10:09:22,853 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-10-17 10:09:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-10-17 10:09:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-10-17 10:09:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-10-17 10:09:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-10-17 10:09:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-10-17 10:09:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-10-17 10:09:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:09:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:09:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-10-17 10:09:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-10-17 10:09:23,008 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:09:23,011 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:09:24,296 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:09:24,319 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:09:24,319 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:09:24,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:09:24 BoogieIcfgContainer [2022-10-17 10:09:24,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:09:24,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:09:24,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:09:24,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:09:24,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:09:21" (1/3) ... [2022-10-17 10:09:24,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2fb6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:09:24, skipping insertion in model container [2022-10-17 10:09:24,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:22" (2/3) ... [2022-10-17 10:09:24,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2fb6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:09:24, skipping insertion in model container [2022-10-17 10:09:24,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:09:24" (3/3) ... [2022-10-17 10:09:24,333 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product25.cil.c [2022-10-17 10:09:24,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:09:24,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:09:24,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:09:24,450 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@208344a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:09:24,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:09:24,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 444 states have (on average 1.6891891891891893) internal successors, (750), 462 states have internal predecessors, (750), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-10-17 10:09:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-17 10:09:24,508 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:24,509 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:09:24,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:24,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash 779665332, now seen corresponding path program 1 times [2022-10-17 10:09:24,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:24,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384263083] [2022-10-17 10:09:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:24,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:25,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:09:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:25,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:09:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:25,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:09:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:25,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:09:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:25,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:09:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 10:09:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:25,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-17 10:09:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:25,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:09:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:25,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:09:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:09:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:09:25,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:25,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384263083] [2022-10-17 10:09:25,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384263083] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:25,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:25,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:09:25,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085820828] [2022-10-17 10:09:25,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:25,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:09:25,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:25,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:09:25,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:09:25,988 INFO L87 Difference]: Start difference. First operand has 570 states, 444 states have (on average 1.6891891891891893) internal successors, (750), 462 states have internal predecessors, (750), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-17 10:09:34,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:34,674 INFO L93 Difference]: Finished difference Result 1500 states and 2604 transitions. [2022-10-17 10:09:34,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:09:34,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2022-10-17 10:09:34,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:34,706 INFO L225 Difference]: With dead ends: 1500 [2022-10-17 10:09:34,706 INFO L226 Difference]: Without dead ends: 930 [2022-10-17 10:09:34,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:09:34,724 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 1736 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 5452 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 3807 SdHoareTripleChecker+Invalid, 6012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 5452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:34,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1841 Valid, 3807 Invalid, 6012 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [560 Valid, 5452 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-10-17 10:09:34,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-10-17 10:09:35,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 573. [2022-10-17 10:09:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 447 states have (on average 1.680089485458613) internal successors, (751), 465 states have internal predecessors, (751), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-10-17 10:09:35,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 952 transitions. [2022-10-17 10:09:35,091 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 952 transitions. Word has length 85 [2022-10-17 10:09:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:35,092 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 952 transitions. [2022-10-17 10:09:35,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-17 10:09:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 952 transitions. [2022-10-17 10:09:35,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-17 10:09:35,102 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:35,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:09:35,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:09:35,103 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:35,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:35,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1669910648, now seen corresponding path program 1 times [2022-10-17 10:09:35,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:35,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555160934] [2022-10-17 10:09:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:35,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:35,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:09:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:35,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:09:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:35,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:09:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:35,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:09:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:35,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:09:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:35,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:09:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:35,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:09:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:35,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:09:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:35,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:09:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:35,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 10:09:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:09:35,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:35,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555160934] [2022-10-17 10:09:35,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555160934] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:35,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:35,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:09:35,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166054074] [2022-10-17 10:09:35,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:35,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:09:35,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:35,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:09:35,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:09:35,728 INFO L87 Difference]: Start difference. First operand 573 states and 952 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-17 10:09:43,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:43,476 INFO L93 Difference]: Finished difference Result 1490 states and 2550 transitions. [2022-10-17 10:09:43,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:09:43,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2022-10-17 10:09:43,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:43,490 INFO L225 Difference]: With dead ends: 1490 [2022-10-17 10:09:43,490 INFO L226 Difference]: Without dead ends: 933 [2022-10-17 10:09:43,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-10-17 10:09:43,503 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 2213 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 5479 mSolverCounterSat, 773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 6252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 5479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:43,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2318 Valid, 3458 Invalid, 6252 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [773 Valid, 5479 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-10-17 10:09:43,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-10-17 10:09:43,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 573. [2022-10-17 10:09:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 447 states have (on average 1.6778523489932886) internal successors, (750), 465 states have internal predecessors, (750), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-10-17 10:09:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 951 transitions. [2022-10-17 10:09:43,731 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 951 transitions. Word has length 86 [2022-10-17 10:09:43,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:43,733 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 951 transitions. [2022-10-17 10:09:43,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-17 10:09:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 951 transitions. [2022-10-17 10:09:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-17 10:09:43,738 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:43,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:09:43,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:09:43,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1301787151, now seen corresponding path program 1 times [2022-10-17 10:09:43,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:43,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924577670] [2022-10-17 10:09:43,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:09:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:44,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:09:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:09:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:44,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:09:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:09:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:44,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:09:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:44,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:09:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:09:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:44,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:09:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-17 10:09:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:09:44,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:44,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924577670] [2022-10-17 10:09:44,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924577670] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:44,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:44,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:09:44,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711346527] [2022-10-17 10:09:44,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:44,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:09:44,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:44,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:09:44,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:09:44,265 INFO L87 Difference]: Start difference. First operand 573 states and 951 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-17 10:09:49,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:49,819 INFO L93 Difference]: Finished difference Result 1481 states and 2530 transitions. [2022-10-17 10:09:49,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:09:49,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2022-10-17 10:09:49,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:49,829 INFO L225 Difference]: With dead ends: 1481 [2022-10-17 10:09:49,829 INFO L226 Difference]: Without dead ends: 893 [2022-10-17 10:09:49,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:09:49,835 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 2141 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 3407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:49,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 2125 Invalid, 3407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-10-17 10:09:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-10-17 10:09:50,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 549. [2022-10-17 10:09:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6690140845070423) internal successors, (711), 442 states have internal predecessors, (711), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-10-17 10:09:50,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 908 transitions. [2022-10-17 10:09:50,012 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 908 transitions. Word has length 86 [2022-10-17 10:09:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:50,013 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 908 transitions. [2022-10-17 10:09:50,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-17 10:09:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 908 transitions. [2022-10-17 10:09:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-17 10:09:50,016 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:50,016 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:09:50,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:09:50,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:50,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:50,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1597666688, now seen corresponding path program 1 times [2022-10-17 10:09:50,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:50,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294557503] [2022-10-17 10:09:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:50,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:09:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:50,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:09:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:50,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:09:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:50,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:09:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:09:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:50,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:09:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-17 10:09:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:09:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:50,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-17 10:09:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-17 10:09:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:09:50,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:50,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294557503] [2022-10-17 10:09:50,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294557503] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:50,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:50,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:09:50,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820334711] [2022-10-17 10:09:50,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:50,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:09:50,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:09:50,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:09:50,621 INFO L87 Difference]: Start difference. First operand 549 states and 908 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)