./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4cb164e6307f0ddcae5850d7f4578967441d1456f6ed5a5be472ba090758b873 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:33:14,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:33:14,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:33:14,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:33:14,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:33:14,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:33:14,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:33:14,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:33:14,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:33:14,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:33:14,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:33:14,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:33:14,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:33:14,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:33:14,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:33:14,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:33:14,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:33:14,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:33:14,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:33:14,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:33:14,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:33:14,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:33:14,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:33:14,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:33:14,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:33:14,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:33:14,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:33:14,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:33:14,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:33:14,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:33:14,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:33:14,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:33:14,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:33:14,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:33:14,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:33:14,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:33:14,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:33:14,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:33:14,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:33:14,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:33:14,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:33:14,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:33:14,800 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:33:14,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:33:14,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:33:14,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:33:14,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:33:14,820 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:33:14,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:33:14,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:33:14,821 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:33:14,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:33:14,822 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:33:14,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:33:14,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:33:14,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:33:14,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:33:14,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:33:14,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:33:14,824 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:33:14,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:33:14,824 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:33:14,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:33:14,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:33:14,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:33:14,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:33:14,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:33:14,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:33:14,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:33:14,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:33:14,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:33:14,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:33:14,828 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:33:14,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:33:14,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:33:14,828 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_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cb164e6307f0ddcae5850d7f4578967441d1456f6ed5a5be472ba090758b873 [2022-11-20 09:33:15,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:33:15,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:33:15,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:33:15,117 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:33:15,118 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:33:15,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c [2022-11-20 09:33:18,071 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:33:18,411 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:33:18,412 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c [2022-11-20 09:33:18,446 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/data/e2d84444a/0e1ecfbabcae437d83f852b7050c87f2/FLAG5e9be5807 [2022-11-20 09:33:18,461 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/data/e2d84444a/0e1ecfbabcae437d83f852b7050c87f2 [2022-11-20 09:33:18,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:33:18,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:33:18,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:33:18,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:33:18,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:33:18,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:33:18" (1/1) ... [2022-11-20 09:33:18,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf2a0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:18, skipping insertion in model container [2022-11-20 09:33:18,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:33:18" (1/1) ... [2022-11-20 09:33:18,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:33:18,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:33:18,891 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c[28842,28855] [2022-11-20 09:33:19,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:33:19,169 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:33:19,212 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c[28842,28855] [2022-11-20 09:33:19,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:33:19,292 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:33:19,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19 WrapperNode [2022-11-20 09:33:19,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:33:19,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:33:19,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:33:19,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:33:19,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19" (1/1) ... [2022-11-20 09:33:19,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19" (1/1) ... [2022-11-20 09:33:19,407 INFO L138 Inliner]: procedures = 89, calls = 330, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 812 [2022-11-20 09:33:19,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:33:19,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:33:19,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:33:19,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:33:19,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19" (1/1) ... [2022-11-20 09:33:19,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19" (1/1) ... [2022-11-20 09:33:19,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19" (1/1) ... [2022-11-20 09:33:19,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19" (1/1) ... [2022-11-20 09:33:19,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19" (1/1) ... [2022-11-20 09:33:19,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19" (1/1) ... [2022-11-20 09:33:19,519 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19" (1/1) ... [2022-11-20 09:33:19,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19" (1/1) ... [2022-11-20 09:33:19,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:33:19,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:33:19,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:33:19,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:33:19,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19" (1/1) ... [2022-11-20 09:33:19,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:33:19,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:19,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:33:19,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:33:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:33:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-20 09:33:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-20 09:33:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-20 09:33:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-20 09:33:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-20 09:33:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-20 09:33:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-20 09:33:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-20 09:33:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 09:33:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 09:33:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 09:33:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 09:33:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-20 09:33:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-20 09:33:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-20 09:33:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-20 09:33:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-20 09:33:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-20 09:33:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-20 09:33:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-20 09:33:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-20 09:33:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-20 09:33:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-20 09:33:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-20 09:33:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-20 09:33:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-20 09:33:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-20 09:33:19,636 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-20 09:33:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-20 09:33:19,636 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-20 09:33:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-20 09:33:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-20 09:33:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:33:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-20 09:33:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-20 09:33:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-20 09:33:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-20 09:33:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-20 09:33:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-20 09:33:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:33:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:33:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-20 09:33:19,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-20 09:33:19,916 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:33:19,922 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:33:21,120 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:33:21,132 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:33:21,132 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:33:21,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:33:21 BoogieIcfgContainer [2022-11-20 09:33:21,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:33:21,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:33:21,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:33:21,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:33:21,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:33:18" (1/3) ... [2022-11-20 09:33:21,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507253bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:33:21, skipping insertion in model container [2022-11-20 09:33:21,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:33:19" (2/3) ... [2022-11-20 09:33:21,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507253bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:33:21, skipping insertion in model container [2022-11-20 09:33:21,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:33:21" (3/3) ... [2022-11-20 09:33:21,145 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product09.cil.c [2022-11-20 09:33:21,165 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:33:21,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:33:21,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:33:21,251 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;@1bfe6634, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:33:21,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:33:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 526 states, 418 states have (on average 1.7177033492822966) internal successors, (718), 439 states have internal predecessors, (718), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-20 09:33:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 09:33:21,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:21,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:21,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:33:21,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:21,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1063489521, now seen corresponding path program 1 times [2022-11-20 09:33:21,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:21,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756719971] [2022-11-20 09:33:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:21,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:33:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:21,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:22,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 09:33:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:22,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:33:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:22,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:22,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:22,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 09:33:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:22,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 09:33:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:22,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:22,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756719971] [2022-11-20 09:33:22,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756719971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:22,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:22,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:33:22,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785872697] [2022-11-20 09:33:22,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:22,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:33:22,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:22,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:33:22,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:33:22,555 INFO L87 Difference]: Start difference. First operand has 526 states, 418 states have (on average 1.7177033492822966) internal successors, (718), 439 states have internal predecessors, (718), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:33:34,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:34,407 INFO L93 Difference]: Finished difference Result 1499 states and 2644 transitions. [2022-11-20 09:33:34,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:33:34,411 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-11-20 09:33:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:34,449 INFO L225 Difference]: With dead ends: 1499 [2022-11-20 09:33:34,450 INFO L226 Difference]: Without dead ends: 985 [2022-11-20 09:33:34,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:33:34,467 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1406 mSDsluCounter, 2371 mSDsCounter, 0 mSdLazyCounter, 5232 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 5833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 5232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:34,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 2856 Invalid, 5833 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [601 Valid, 5232 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-11-20 09:33:34,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2022-11-20 09:33:34,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 520. [2022-11-20 09:33:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 414 states have (on average 1.710144927536232) internal successors, (708), 433 states have internal predecessors, (708), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2022-11-20 09:33:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 875 transitions. [2022-11-20 09:33:34,748 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 875 transitions. Word has length 74 [2022-11-20 09:33:34,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:34,750 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 875 transitions. [2022-11-20 09:33:34,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:33:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 875 transitions. [2022-11-20 09:33:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 09:33:34,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:34,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:34,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:33:34,766 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:33:34,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:34,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1687716467, now seen corresponding path program 1 times [2022-11-20 09:33:34,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:34,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542065463] [2022-11-20 09:33:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:34,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:35,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:33:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:35,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:33:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:35,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:33:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:35,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:33:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:35,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:33:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:35,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:35,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542065463] [2022-11-20 09:33:35,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542065463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:35,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:35,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:33:35,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943226466] [2022-11-20 09:33:35,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:35,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:33:35,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:35,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:33:35,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:33:35,497 INFO L87 Difference]: Start difference. First operand 520 states and 875 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:33:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:45,067 INFO L93 Difference]: Finished difference Result 1324 states and 2278 transitions. [2022-11-20 09:33:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:33:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-11-20 09:33:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:45,076 INFO L225 Difference]: With dead ends: 1324 [2022-11-20 09:33:45,077 INFO L226 Difference]: Without dead ends: 822 [2022-11-20 09:33:45,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:33:45,081 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 1030 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 5534 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 3548 SdHoareTripleChecker+Invalid, 5816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 5534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:45,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 3548 Invalid, 5816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [282 Valid, 5534 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-20 09:33:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-20 09:33:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 524. [2022-11-20 09:33:45,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 417 states have (on average 1.7026378896882495) internal successors, (710), 436 states have internal predecessors, (710), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (83), 80 states have call predecessors, (83), 81 states have call successors, (83) [2022-11-20 09:33:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 879 transitions. [2022-11-20 09:33:45,257 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 879 transitions. Word has length 80 [2022-11-20 09:33:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:45,257 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 879 transitions. [2022-11-20 09:33:45,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 09:33:45,258 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 879 transitions. [2022-11-20 09:33:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 09:33:45,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:45,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:45,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:33:45,266 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:33:45,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:45,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2018436953, now seen corresponding path program 1 times [2022-11-20 09:33:45,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:45,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367959985] [2022-11-20 09:33:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:45,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:33:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 09:33:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 09:33:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:33:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:33:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:33:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:45,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:45,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367959985] [2022-11-20 09:33:45,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367959985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:45,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:45,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 09:33:45,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783024425] [2022-11-20 09:33:45,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:45,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:33:45,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:45,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:33:45,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:33:45,877 INFO L87 Difference]: Start difference. First operand 524 states and 879 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 09:34:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:05,233 INFO L93 Difference]: Finished difference Result 2467 states and 4405 transitions. [2022-11-20 09:34:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 09:34:05,234 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2022-11-20 09:34:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:05,252 INFO L225 Difference]: With dead ends: 2467 [2022-11-20 09:34:05,253 INFO L226 Difference]: Without dead ends: 1961 [2022-11-20 09:34:05,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2022-11-20 09:34:05,260 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 3685 mSDsluCounter, 3782 mSDsCounter, 0 mSdLazyCounter, 8977 mSolverCounterSat, 1489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3761 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 10466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1489 IncrementalHoareTripleChecker+Valid, 8977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:05,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3761 Valid, 4386 Invalid, 10466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1489 Valid, 8977 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2022-11-20 09:34:05,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2022-11-20 09:34:05,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1377. [2022-11-20 09:34:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1085 states have (on average 1.6617511520737327) internal successors, (1803), 1132 states have internal predecessors, (1803), 235 states have call successors, (235), 53 states have call predecessors, (235), 56 states have return successors, (269), 227 states have call predecessors, (269), 230 states have call successors, (269) [2022-11-20 09:34:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2307 transitions. [2022-11-20 09:34:05,676 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2307 transitions. Word has length 85 [2022-11-20 09:34:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:05,677 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 2307 transitions. [2022-11-20 09:34:05,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 09:34:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2307 transitions. [2022-11-20 09:34:05,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 09:34:05,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:05,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:05,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:34:05,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:05,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash 620001365, now seen corresponding path program 1 times [2022-11-20 09:34:05,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:05,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484466042] [2022-11-20 09:34:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:05,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:34:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:05,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 09:34:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:06,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 09:34:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:06,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:34:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:06,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:34:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:06,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:34:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:06,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:06,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484466042] [2022-11-20 09:34:06,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484466042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:34:06,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:34:06,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 09:34:06,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637305483] [2022-11-20 09:34:06,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:34:06,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:34:06,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:06,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:34:06,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:34:06,541 INFO L87 Difference]: Start difference. First operand 1377 states and 2307 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-20 09:34:23,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:23,418 INFO L93 Difference]: Finished difference Result 3568 states and 6177 transitions. [2022-11-20 09:34:23,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 09:34:23,419 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 94 [2022-11-20 09:34:23,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:23,436 INFO L225 Difference]: With dead ends: 3568 [2022-11-20 09:34:23,436 INFO L226 Difference]: Without dead ends: 2035 [2022-11-20 09:34:23,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2022-11-20 09:34:23,448 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 4066 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 9357 mSolverCounterSat, 1109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4127 SdHoareTripleChecker+Valid, 4712 SdHoareTripleChecker+Invalid, 10466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1109 IncrementalHoareTripleChecker+Valid, 9357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:23,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4127 Valid, 4712 Invalid, 10466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1109 Valid, 9357 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-11-20 09:34:23,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-11-20 09:34:23,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1452. [2022-11-20 09:34:23,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1143 states have (on average 1.63167104111986) internal successors, (1865), 1192 states have internal predecessors, (1865), 247 states have call successors, (247), 58 states have call predecessors, (247), 61 states have return successors, (290), 237 states have call predecessors, (290), 242 states have call successors, (290) [2022-11-20 09:34:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2402 transitions. [2022-11-20 09:34:23,877 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2402 transitions. Word has length 94 [2022-11-20 09:34:23,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:23,878 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 2402 transitions. [2022-11-20 09:34:23,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-20 09:34:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2402 transitions. [2022-11-20 09:34:23,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 09:34:23,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:23,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:23,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:34:23,882 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:23,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2018113095, now seen corresponding path program 1 times [2022-11-20 09:34:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:23,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877552110] [2022-11-20 09:34:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:34:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:24,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 09:34:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 09:34:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:24,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:34:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:24,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:34:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:34:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:24,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:34:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:34:24,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:24,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877552110] [2022-11-20 09:34:24,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877552110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:34:24,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:34:24,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:34:24,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47655963] [2022-11-20 09:34:24,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:34:24,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:34:24,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:24,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:34:24,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:34:24,403 INFO L87 Difference]: Start difference. First operand 1452 states and 2402 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:34:31,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:31,734 INFO L93 Difference]: Finished difference Result 3447 states and 5879 transitions. [2022-11-20 09:34:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:34:31,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-11-20 09:34:31,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:31,750 INFO L225 Difference]: With dead ends: 3447 [2022-11-20 09:34:31,751 INFO L226 Difference]: Without dead ends: 2013 [2022-11-20 09:34:31,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:34:31,759 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 954 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 3028 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 3271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 3028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:31,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 1867 Invalid, 3271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 3028 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 09:34:31,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-11-20 09:34:32,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1452. [2022-11-20 09:34:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1143 states have (on average 1.6307961504811899) internal successors, (1864), 1192 states have internal predecessors, (1864), 247 states have call successors, (247), 58 states have call predecessors, (247), 61 states have return successors, (290), 237 states have call predecessors, (290), 242 states have call successors, (290) [2022-11-20 09:34:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2401 transitions. [2022-11-20 09:34:32,171 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2401 transitions. Word has length 97 [2022-11-20 09:34:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:32,172 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 2401 transitions. [2022-11-20 09:34:32,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:34:32,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2401 transitions. [2022-11-20 09:34:32,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 09:34:32,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:32,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:32,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:34:32,182 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:32,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:32,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1537886588, now seen corresponding path program 1 times [2022-11-20 09:34:32,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:32,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833114864] [2022-11-20 09:34:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:32,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:32,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:34:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:32,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:32,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:34:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:32,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 09:34:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:32,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:32,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:34:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:32,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:34:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:32,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:34:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:32,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:34:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:34:32,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:32,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833114864] [2022-11-20 09:34:32,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833114864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:34:32,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:34:32,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 09:34:32,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915913129] [2022-11-20 09:34:32,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:34:32,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:34:32,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:32,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:34:32,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:34:32,809 INFO L87 Difference]: Start difference. First operand 1452 states and 2401 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 09:34:42,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:42,336 INFO L93 Difference]: Finished difference Result 3547 states and 6146 transitions. [2022-11-20 09:34:42,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:34:42,337 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-11-20 09:34:42,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:42,358 INFO L225 Difference]: With dead ends: 3547 [2022-11-20 09:34:42,358 INFO L226 Difference]: Without dead ends: 2153 [2022-11-20 09:34:42,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-11-20 09:34:42,370 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 2077 mSDsluCounter, 3986 mSDsCounter, 0 mSdLazyCounter, 6528 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 7138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 6528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:42,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2140 Valid, 4520 Invalid, 7138 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [610 Valid, 6528 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-20 09:34:42,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2022-11-20 09:34:42,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1476. [2022-11-20 09:34:42,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1155 states have (on average 1.61991341991342) internal successors, (1871), 1212 states have internal predecessors, (1871), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-11-20 09:34:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2444 transitions. [2022-11-20 09:34:42,828 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2444 transitions. Word has length 98 [2022-11-20 09:34:42,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:42,829 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 2444 transitions. [2022-11-20 09:34:42,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 09:34:42,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2444 transitions. [2022-11-20 09:34:42,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 09:34:42,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:42,833 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:42,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:34:42,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:42,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:42,834 INFO L85 PathProgramCache]: Analyzing trace with hash -141304047, now seen corresponding path program 1 times [2022-11-20 09:34:42,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:42,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342226865] [2022-11-20 09:34:42,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:42,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:34:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:43,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:43,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:34:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:43,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 09:34:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:43,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:34:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:34:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:34:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:43,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:34:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:34:43,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:43,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342226865] [2022-11-20 09:34:43,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342226865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:34:43,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:34:43,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:34:43,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027809478] [2022-11-20 09:34:43,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:34:43,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:34:43,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:43,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:34:43,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:34:43,319 INFO L87 Difference]: Start difference. First operand 1476 states and 2444 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:34:49,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:49,785 INFO L93 Difference]: Finished difference Result 3463 states and 5934 transitions. [2022-11-20 09:34:49,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:34:49,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2022-11-20 09:34:49,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:49,802 INFO L225 Difference]: With dead ends: 3463 [2022-11-20 09:34:49,803 INFO L226 Difference]: Without dead ends: 2045 [2022-11-20 09:34:49,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:34:49,811 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1450 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:49,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1795 Invalid, 3084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-20 09:34:49,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-11-20 09:34:50,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1476. [2022-11-20 09:34:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1155 states have (on average 1.6155844155844157) internal successors, (1866), 1212 states have internal predecessors, (1866), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-11-20 09:34:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2439 transitions. [2022-11-20 09:34:50,285 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2439 transitions. Word has length 99 [2022-11-20 09:34:50,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:50,286 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 2439 transitions. [2022-11-20 09:34:50,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:34:50,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2439 transitions. [2022-11-20 09:34:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-20 09:34:50,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:50,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:50,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:34:50,290 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash 99870936, now seen corresponding path program 1 times [2022-11-20 09:34:50,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:50,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866207820] [2022-11-20 09:34:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:50,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:50,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:34:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:34:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:50,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:34:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:50,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:50,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:34:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:50,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:34:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:50,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:34:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:34:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:34:50,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:50,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866207820] [2022-11-20 09:34:50,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866207820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:34:50,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:34:50,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:34:50,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487743832] [2022-11-20 09:34:50,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:34:50,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:34:50,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:34:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:34:50,751 INFO L87 Difference]: Start difference. First operand 1476 states and 2439 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:34:57,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:57,990 INFO L93 Difference]: Finished difference Result 3463 states and 5929 transitions. [2022-11-20 09:34:57,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:34:57,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-11-20 09:34:57,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:58,007 INFO L225 Difference]: With dead ends: 3463 [2022-11-20 09:34:58,007 INFO L226 Difference]: Without dead ends: 2045 [2022-11-20 09:34:58,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:34:58,015 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1041 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 2892 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 3135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 2892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:58,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1893 Invalid, 3135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 2892 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 09:34:58,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-11-20 09:34:58,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1476. [2022-11-20 09:34:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1155 states have (on average 1.6112554112554112) internal successors, (1861), 1212 states have internal predecessors, (1861), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-11-20 09:34:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2434 transitions. [2022-11-20 09:34:58,565 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2434 transitions. Word has length 100 [2022-11-20 09:34:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:58,565 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 2434 transitions. [2022-11-20 09:34:58,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:34:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2434 transitions. [2022-11-20 09:34:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 09:34:58,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:58,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:58,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:34:58,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:58,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:58,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1204417932, now seen corresponding path program 1 times [2022-11-20 09:34:58,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:58,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855971027] [2022-11-20 09:34:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:58,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:58,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:34:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:58,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:58,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:34:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:58,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 09:34:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:59,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:59,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:34:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:34:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:59,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:34:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:59,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:34:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:34:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:34:59,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:59,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855971027] [2022-11-20 09:34:59,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855971027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:34:59,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:34:59,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:34:59,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051757365] [2022-11-20 09:34:59,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:34:59,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:34:59,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:59,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:34:59,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:34:59,049 INFO L87 Difference]: Start difference. First operand 1476 states and 2434 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:35:05,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:05,966 INFO L93 Difference]: Finished difference Result 3463 states and 5924 transitions. [2022-11-20 09:35:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:35:05,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2022-11-20 09:35:05,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:05,982 INFO L225 Difference]: With dead ends: 3463 [2022-11-20 09:35:05,982 INFO L226 Difference]: Without dead ends: 2045 [2022-11-20 09:35:05,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:35:05,989 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1436 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 2772 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 3151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 2772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:05,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1818 Invalid, 3151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 2772 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-20 09:35:05,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-11-20 09:35:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1476. [2022-11-20 09:35:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1155 states have (on average 1.6069264069264069) internal successors, (1856), 1212 states have internal predecessors, (1856), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-11-20 09:35:06,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2429 transitions. [2022-11-20 09:35:06,370 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2429 transitions. Word has length 101 [2022-11-20 09:35:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:06,371 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 2429 transitions. [2022-11-20 09:35:06,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:35:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2429 transitions. [2022-11-20 09:35:06,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 09:35:06,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:06,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:06,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:35:06,375 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:06,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:06,375 INFO L85 PathProgramCache]: Analyzing trace with hash 387102411, now seen corresponding path program 1 times [2022-11-20 09:35:06,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:06,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992595455] [2022-11-20 09:35:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:06,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:06,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:35:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:06,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:35:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:06,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 09:35:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:06,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:06,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:35:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:35:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:06,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:35:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:06,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:35:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:35:06,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:06,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992595455] [2022-11-20 09:35:06,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992595455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:06,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:06,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:35:06,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153706256] [2022-11-20 09:35:06,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:06,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:35:06,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:06,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:35:06,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:35:06,893 INFO L87 Difference]: Start difference. First operand 1476 states and 2429 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 09:35:15,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:15,243 INFO L93 Difference]: Finished difference Result 3486 states and 5953 transitions. [2022-11-20 09:35:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:35:15,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 101 [2022-11-20 09:35:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:15,258 INFO L225 Difference]: With dead ends: 3486 [2022-11-20 09:35:15,259 INFO L226 Difference]: Without dead ends: 2074 [2022-11-20 09:35:15,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:35:15,266 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1819 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 4925 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 5450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 4925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:15,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 3172 Invalid, 5450 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [525 Valid, 4925 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 09:35:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2022-11-20 09:35:15,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 1478. [2022-11-20 09:35:15,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1157 states have (on average 1.6058772687986171) internal successors, (1858), 1214 states have internal predecessors, (1858), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-11-20 09:35:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2431 transitions. [2022-11-20 09:35:15,679 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2431 transitions. Word has length 101 [2022-11-20 09:35:15,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:15,679 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 2431 transitions. [2022-11-20 09:35:15,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 09:35:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2431 transitions. [2022-11-20 09:35:15,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 09:35:15,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:15,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:15,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:35:15,684 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:15,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:15,685 INFO L85 PathProgramCache]: Analyzing trace with hash -991273741, now seen corresponding path program 1 times [2022-11-20 09:35:15,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:15,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597775877] [2022-11-20 09:35:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:15,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:15,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:35:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:15,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:35:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:16,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:35:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:16,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:16,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:35:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:35:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:16,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:35:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:16,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:35:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:35:16,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:16,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597775877] [2022-11-20 09:35:16,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597775877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:16,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:16,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:35:16,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172948664] [2022-11-20 09:35:16,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:16,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:35:16,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:16,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:35:16,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:35:16,146 INFO L87 Difference]: Start difference. First operand 1478 states and 2431 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:35:22,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:22,436 INFO L93 Difference]: Finished difference Result 3469 states and 5925 transitions. [2022-11-20 09:35:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:35:22,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-11-20 09:35:22,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:22,450 INFO L225 Difference]: With dead ends: 3469 [2022-11-20 09:35:22,450 INFO L226 Difference]: Without dead ends: 2049 [2022-11-20 09:35:22,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:35:22,458 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1820 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 3100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:22,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 1747 Invalid, 3100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2586 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 09:35:22,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2022-11-20 09:35:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1478. [2022-11-20 09:35:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1157 states have (on average 1.6015557476231634) internal successors, (1853), 1214 states have internal predecessors, (1853), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-11-20 09:35:22,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2426 transitions. [2022-11-20 09:35:22,887 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2426 transitions. Word has length 102 [2022-11-20 09:35:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:22,887 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 2426 transitions. [2022-11-20 09:35:22,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:35:22,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2426 transitions. [2022-11-20 09:35:22,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 09:35:22,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:22,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:22,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:35:22,891 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:22,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:22,891 INFO L85 PathProgramCache]: Analyzing trace with hash 48646230, now seen corresponding path program 1 times [2022-11-20 09:35:22,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:22,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572623712] [2022-11-20 09:35:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:22,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:23,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:35:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:23,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:35:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:23,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:35:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:23,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:23,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:35:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:35:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:35:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:35:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:35:23,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:23,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572623712] [2022-11-20 09:35:23,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572623712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:23,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:23,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:35:23,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429883056] [2022-11-20 09:35:23,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:23,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:35:23,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:23,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:35:23,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:35:23,388 INFO L87 Difference]: Start difference. First operand 1478 states and 2426 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 09:35:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:32,461 INFO L93 Difference]: Finished difference Result 3490 states and 5950 transitions. [2022-11-20 09:35:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:35:32,462 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 102 [2022-11-20 09:35:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:32,473 INFO L225 Difference]: With dead ends: 3490 [2022-11-20 09:35:32,473 INFO L226 Difference]: Without dead ends: 2078 [2022-11-20 09:35:32,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:35:32,480 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1033 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 5095 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 5351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 5095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:32,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 3284 Invalid, 5351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [256 Valid, 5095 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-20 09:35:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2022-11-20 09:35:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1481. [2022-11-20 09:35:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1160 states have (on average 1.6) internal successors, (1856), 1217 states have internal predecessors, (1856), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-11-20 09:35:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2429 transitions. [2022-11-20 09:35:32,924 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2429 transitions. Word has length 102 [2022-11-20 09:35:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:32,925 INFO L495 AbstractCegarLoop]: Abstraction has 1481 states and 2429 transitions. [2022-11-20 09:35:32,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 09:35:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2429 transitions. [2022-11-20 09:35:32,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 09:35:32,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:32,928 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:32,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:35:32,929 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:32,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:32,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1879818247, now seen corresponding path program 1 times [2022-11-20 09:35:32,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:32,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027781586] [2022-11-20 09:35:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:32,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:35:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:33,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:33,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:35:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:33,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 09:35:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:33,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:33,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:33,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:35:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:35:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:33,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:35:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:33,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:35:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:35:33,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:33,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027781586] [2022-11-20 09:35:33,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027781586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:33,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:33,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:35:33,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492376800] [2022-11-20 09:35:33,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:33,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:35:33,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:33,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:35:33,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:35:33,375 INFO L87 Difference]: Start difference. First operand 1481 states and 2429 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:35:40,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:40,733 INFO L93 Difference]: Finished difference Result 3518 states and 5979 transitions. [2022-11-20 09:35:40,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:35:40,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2022-11-20 09:35:40,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:40,746 INFO L225 Difference]: With dead ends: 3518 [2022-11-20 09:35:40,746 INFO L226 Difference]: Without dead ends: 2055 [2022-11-20 09:35:40,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:35:40,752 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 930 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 2863 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 3104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 2863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:40,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 1882 Invalid, 3104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 2863 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-20 09:35:40,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2022-11-20 09:35:41,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 1481. [2022-11-20 09:35:41,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1160 states have (on average 1.5991379310344827) internal successors, (1855), 1217 states have internal predecessors, (1855), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-11-20 09:35:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2428 transitions. [2022-11-20 09:35:41,305 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2428 transitions. Word has length 103 [2022-11-20 09:35:41,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:41,306 INFO L495 AbstractCegarLoop]: Abstraction has 1481 states and 2428 transitions. [2022-11-20 09:35:41,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:35:41,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2428 transitions. [2022-11-20 09:35:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 09:35:41,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:41,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:41,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:35:41,309 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:41,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:41,309 INFO L85 PathProgramCache]: Analyzing trace with hash 711621992, now seen corresponding path program 1 times [2022-11-20 09:35:41,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:41,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689960129] [2022-11-20 09:35:41,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:41,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:41,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:35:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:41,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:35:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:41,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 09:35:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:41,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:41,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:41,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:35:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:41,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:35:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:41,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:35:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:35:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:35:41,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:41,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689960129] [2022-11-20 09:35:41,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689960129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:41,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:41,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:35:41,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025253076] [2022-11-20 09:35:41,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:41,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:35:41,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:41,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:35:41,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:35:41,842 INFO L87 Difference]: Start difference. First operand 1481 states and 2428 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 09:35:50,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:50,640 INFO L93 Difference]: Finished difference Result 3478 states and 5929 transitions. [2022-11-20 09:35:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:35:50,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-11-20 09:35:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:50,653 INFO L225 Difference]: With dead ends: 3478 [2022-11-20 09:35:50,653 INFO L226 Difference]: Without dead ends: 2045 [2022-11-20 09:35:50,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:35:50,660 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1412 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 5032 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 3259 SdHoareTripleChecker+Invalid, 5406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:50,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 3259 Invalid, 5406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5032 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-20 09:35:50,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-11-20 09:35:51,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1473. [2022-11-20 09:35:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1152 states have (on average 1.6006944444444444) internal successors, (1844), 1209 states have internal predecessors, (1844), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-11-20 09:35:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 2417 transitions. [2022-11-20 09:35:51,163 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 2417 transitions. Word has length 103 [2022-11-20 09:35:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:51,163 INFO L495 AbstractCegarLoop]: Abstraction has 1473 states and 2417 transitions. [2022-11-20 09:35:51,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 09:35:51,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 2417 transitions. [2022-11-20 09:35:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 09:35:51,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:51,167 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:51,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 09:35:51,167 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:51,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:51,167 INFO L85 PathProgramCache]: Analyzing trace with hash -682021401, now seen corresponding path program 1 times [2022-11-20 09:35:51,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:51,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114290256] [2022-11-20 09:35:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:51,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:51,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:35:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:51,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:51,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:35:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 09:35:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:35:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:35:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:35:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:51,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:35:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:51,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:35:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:35:51,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:51,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114290256] [2022-11-20 09:35:51,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114290256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:35:51,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:35:51,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:35:51,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587618060] [2022-11-20 09:35:51,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:35:51,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:35:51,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:51,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:35:51,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:35:51,707 INFO L87 Difference]: Start difference. First operand 1473 states and 2417 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 09:36:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:00,949 INFO L93 Difference]: Finished difference Result 3478 states and 5925 transitions. [2022-11-20 09:36:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:36:00,949 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-11-20 09:36:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:00,963 INFO L225 Difference]: With dead ends: 3478 [2022-11-20 09:36:00,963 INFO L226 Difference]: Without dead ends: 2066 [2022-11-20 09:36:00,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:36:00,970 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 996 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 5010 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 5260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 5010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:00,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 3295 Invalid, 5260 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [250 Valid, 5010 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-20 09:36:00,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2022-11-20 09:36:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1477. [2022-11-20 09:36:01,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1156 states have (on average 1.5986159169550174) internal successors, (1848), 1213 states have internal predecessors, (1848), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-11-20 09:36:01,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2421 transitions. [2022-11-20 09:36:01,419 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2421 transitions. Word has length 103 [2022-11-20 09:36:01,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:01,419 INFO L495 AbstractCegarLoop]: Abstraction has 1477 states and 2421 transitions. [2022-11-20 09:36:01,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 09:36:01,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2421 transitions. [2022-11-20 09:36:01,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 09:36:01,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:01,421 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:01,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 09:36:01,422 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:01,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1650050416, now seen corresponding path program 1 times [2022-11-20 09:36:01,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:36:01,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217484923] [2022-11-20 09:36:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:01,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:36:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:01,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:36:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:01,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:36:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:01,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:36:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:01,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 09:36:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:01,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:36:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:01,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:36:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:01,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:36:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:36:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:01,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:36:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:01,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:36:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:36:01,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:36:01,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217484923] [2022-11-20 09:36:01,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217484923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:36:01,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:36:01,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:36:01,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229703527] [2022-11-20 09:36:01,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:36:01,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:36:01,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:36:01,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:36:01,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:36:01,959 INFO L87 Difference]: Start difference. First operand 1477 states and 2421 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 09:36:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:10,340 INFO L93 Difference]: Finished difference Result 3486 states and 5931 transitions. [2022-11-20 09:36:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:36:10,341 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2022-11-20 09:36:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:10,353 INFO L225 Difference]: With dead ends: 3486 [2022-11-20 09:36:10,353 INFO L226 Difference]: Without dead ends: 2074 [2022-11-20 09:36:10,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:36:10,358 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1766 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 4771 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 5291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 4771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:10,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1836 Valid, 3163 Invalid, 5291 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [520 Valid, 4771 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 09:36:10,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2022-11-20 09:36:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 1482. [2022-11-20 09:36:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1161 states have (on average 1.5960378983634798) internal successors, (1853), 1218 states have internal predecessors, (1853), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-11-20 09:36:10,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2426 transitions. [2022-11-20 09:36:10,856 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2426 transitions. Word has length 104 [2022-11-20 09:36:10,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:10,856 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 2426 transitions. [2022-11-20 09:36:10,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 09:36:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2426 transitions. [2022-11-20 09:36:10,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-20 09:36:10,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:10,859 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:10,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 09:36:10,859 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:10,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1915216684, now seen corresponding path program 1 times [2022-11-20 09:36:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:36:10,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122011018] [2022-11-20 09:36:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:10,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:36:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:11,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:36:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:11,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:36:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:11,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:36:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:11,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:36:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:11,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:36:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:11,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:36:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:11,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:36:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:11,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:36:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:11,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:36:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:11,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:36:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:36:11,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:36:11,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122011018] [2022-11-20 09:36:11,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122011018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:36:11,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:36:11,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:36:11,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644560524] [2022-11-20 09:36:11,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:36:11,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:36:11,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:36:11,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:36:11,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:36:11,311 INFO L87 Difference]: Start difference. First operand 1482 states and 2426 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:36:18,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:18,147 INFO L93 Difference]: Finished difference Result 3484 states and 5926 transitions. [2022-11-20 09:36:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:36:18,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 105 [2022-11-20 09:36:18,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:18,157 INFO L225 Difference]: With dead ends: 3484 [2022-11-20 09:36:18,157 INFO L226 Difference]: Without dead ends: 2051 [2022-11-20 09:36:18,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:36:18,162 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1358 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:18,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 1821 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 09:36:18,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2022-11-20 09:36:18,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1482. [2022-11-20 09:36:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1161 states have (on average 1.5925925925925926) internal successors, (1849), 1218 states have internal predecessors, (1849), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-11-20 09:36:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2422 transitions. [2022-11-20 09:36:18,715 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2422 transitions. Word has length 105 [2022-11-20 09:36:18,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:18,716 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 2422 transitions. [2022-11-20 09:36:18,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 09:36:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2422 transitions. [2022-11-20 09:36:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-20 09:36:18,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:18,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:18,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 09:36:18,720 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:18,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:18,720 INFO L85 PathProgramCache]: Analyzing trace with hash 645646162, now seen corresponding path program 1 times [2022-11-20 09:36:18,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:36:18,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721085847] [2022-11-20 09:36:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:18,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:36:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:36:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:18,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:36:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:18,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:36:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:19,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:36:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:36:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:19,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:36:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:36:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:36:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:36:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:36:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:36:19,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:36:19,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721085847] [2022-11-20 09:36:19,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721085847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:36:19,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:36:19,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 09:36:19,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345939616] [2022-11-20 09:36:19,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:36:19,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:36:19,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:36:19,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:36:19,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:36:19,615 INFO L87 Difference]: Start difference. First operand 1482 states and 2422 transitions. Second operand has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 09:36:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:55,179 INFO L93 Difference]: Finished difference Result 5915 states and 10442 transitions. [2022-11-20 09:36:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-20 09:36:55,180 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 105 [2022-11-20 09:36:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:55,203 INFO L225 Difference]: With dead ends: 5915 [2022-11-20 09:36:55,204 INFO L226 Difference]: Without dead ends: 4511 [2022-11-20 09:36:55,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=891, Invalid=4659, Unknown=0, NotChecked=0, Total=5550 [2022-11-20 09:36:55,212 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 9138 mSDsluCounter, 6614 mSDsCounter, 0 mSdLazyCounter, 17633 mSolverCounterSat, 3706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9211 SdHoareTripleChecker+Valid, 7481 SdHoareTripleChecker+Invalid, 21339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3706 IncrementalHoareTripleChecker+Valid, 17633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:55,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9211 Valid, 7481 Invalid, 21339 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3706 Valid, 17633 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time] [2022-11-20 09:36:55,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2022-11-20 09:36:56,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3080. [2022-11-20 09:36:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3080 states, 2416 states have (on average 1.5815397350993377) internal successors, (3821), 2534 states have internal predecessors, (3821), 512 states have call successors, (512), 118 states have call predecessors, (512), 151 states have return successors, (687), 499 states have call predecessors, (687), 507 states have call successors, (687) [2022-11-20 09:36:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 5020 transitions. [2022-11-20 09:36:56,271 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 5020 transitions. Word has length 105 [2022-11-20 09:36:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:56,272 INFO L495 AbstractCegarLoop]: Abstraction has 3080 states and 5020 transitions. [2022-11-20 09:36:56,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 09:36:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 5020 transitions. [2022-11-20 09:36:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-20 09:36:56,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:56,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:56,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 09:36:56,274 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:56,274 INFO L85 PathProgramCache]: Analyzing trace with hash 871924812, now seen corresponding path program 1 times [2022-11-20 09:36:56,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:36:56,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506012732] [2022-11-20 09:36:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:56,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:36:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:36:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:36:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:56,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:36:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:56,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:36:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:56,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:36:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:36:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:56,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:36:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:56,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:36:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:56,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:36:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:56,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:36:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:36:56,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:36:56,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506012732] [2022-11-20 09:36:56,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506012732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:36:56,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638631419] [2022-11-20 09:36:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:56,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:36:56,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:36:56,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:36:56,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:36:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:57,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:36:57,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:36:57,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:36:57,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638631419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:36:57,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:36:57,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-11-20 09:36:57,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163488301] [2022-11-20 09:36:57,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:36:57,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:36:57,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:36:57,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:36:57,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:36:57,612 INFO L87 Difference]: Start difference. First operand 3080 states and 5020 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-20 09:36:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:59,336 INFO L93 Difference]: Finished difference Result 3196 states and 5207 transitions. [2022-11-20 09:36:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:36:59,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 106 [2022-11-20 09:36:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:59,353 INFO L225 Difference]: With dead ends: 3196 [2022-11-20 09:36:59,353 INFO L226 Difference]: Without dead ends: 3181 [2022-11-20 09:36:59,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:36:59,356 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 844 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:59,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 1464 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:36:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2022-11-20 09:37:00,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 3089. [2022-11-20 09:37:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3089 states, 2425 states have (on average 1.579381443298969) internal successors, (3830), 2543 states have internal predecessors, (3830), 512 states have call successors, (512), 118 states have call predecessors, (512), 151 states have return successors, (687), 499 states have call predecessors, (687), 507 states have call successors, (687) [2022-11-20 09:37:00,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3089 states to 3089 states and 5029 transitions. [2022-11-20 09:37:00,536 INFO L78 Accepts]: Start accepts. Automaton has 3089 states and 5029 transitions. Word has length 106 [2022-11-20 09:37:00,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:37:00,536 INFO L495 AbstractCegarLoop]: Abstraction has 3089 states and 5029 transitions. [2022-11-20 09:37:00,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-20 09:37:00,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3089 states and 5029 transitions. [2022-11-20 09:37:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 09:37:00,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:37:00,539 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:37:00,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 09:37:00,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:37:00,747 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:37:00,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:00,747 INFO L85 PathProgramCache]: Analyzing trace with hash 456499591, now seen corresponding path program 1 times [2022-11-20 09:37:00,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:00,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336839035] [2022-11-20 09:37:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:00,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:37:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:01,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:37:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:01,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:37:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:01,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:37:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:37:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:01,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:37:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:37:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:01,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:37:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:01,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:37:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:37:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:37:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:37:01,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:37:01,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336839035] [2022-11-20 09:37:01,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336839035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:37:01,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:37:01,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:37:01,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023083115] [2022-11-20 09:37:01,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:37:01,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:37:01,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:37:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:37:01,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:37:01,376 INFO L87 Difference]: Start difference. First operand 3089 states and 5029 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 09:37:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:37:15,647 INFO L93 Difference]: Finished difference Result 4239 states and 7308 transitions. [2022-11-20 09:37:15,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 09:37:15,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-11-20 09:37:15,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:37:15,666 INFO L225 Difference]: With dead ends: 4239 [2022-11-20 09:37:15,667 INFO L226 Difference]: Without dead ends: 4224 [2022-11-20 09:37:15,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2022-11-20 09:37:15,671 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 3950 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 5032 mSolverCounterSat, 1350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4015 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 6382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1350 IncrementalHoareTripleChecker+Valid, 5032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:37:15,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4015 Valid, 2571 Invalid, 6382 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1350 Valid, 5032 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-11-20 09:37:15,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4224 states. [2022-11-20 09:37:16,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4224 to 3089. [2022-11-20 09:37:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3089 states, 2425 states have (on average 1.5764948453608247) internal successors, (3823), 2543 states have internal predecessors, (3823), 512 states have call successors, (512), 118 states have call predecessors, (512), 151 states have return successors, (687), 499 states have call predecessors, (687), 507 states have call successors, (687) [2022-11-20 09:37:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3089 states to 3089 states and 5022 transitions. [2022-11-20 09:37:16,854 INFO L78 Accepts]: Start accepts. Automaton has 3089 states and 5022 transitions. Word has length 112 [2022-11-20 09:37:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:37:16,855 INFO L495 AbstractCegarLoop]: Abstraction has 3089 states and 5022 transitions. [2022-11-20 09:37:16,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 09:37:16,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3089 states and 5022 transitions. [2022-11-20 09:37:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 09:37:16,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:37:16,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:37:16,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 09:37:16,858 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:37:16,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:16,859 INFO L85 PathProgramCache]: Analyzing trace with hash 708799487, now seen corresponding path program 1 times [2022-11-20 09:37:16,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:16,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911932485] [2022-11-20 09:37:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:16,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:37:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:37:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:37:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:37:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:37:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:37:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:37:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:37:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:37:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:37:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:37:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 09:37:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:37:17,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:37:17,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911932485] [2022-11-20 09:37:17,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911932485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:37:17,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:37:17,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 09:37:17,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24449075] [2022-11-20 09:37:17,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:37:17,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:37:17,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:37:17,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:37:17,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:37:17,614 INFO L87 Difference]: Start difference. First operand 3089 states and 5022 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 09:37:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:37:40,710 INFO L93 Difference]: Finished difference Result 8053 states and 13877 transitions. [2022-11-20 09:37:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 09:37:40,711 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 123 [2022-11-20 09:37:40,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:37:40,741 INFO L225 Difference]: With dead ends: 8053 [2022-11-20 09:37:40,741 INFO L226 Difference]: Without dead ends: 5050 [2022-11-20 09:37:40,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=370, Invalid=1610, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 09:37:40,756 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 6779 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 9053 mSolverCounterSat, 3272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6780 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 12325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3272 IncrementalHoareTripleChecker+Valid, 9053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:37:40,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6780 Valid, 2507 Invalid, 12325 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3272 Valid, 9053 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2022-11-20 09:37:40,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5050 states. [2022-11-20 09:37:42,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5050 to 3105. [2022-11-20 09:37:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 2437 states have (on average 1.5699630693475586) internal successors, (3826), 2555 states have internal predecessors, (3826), 512 states have call successors, (512), 118 states have call predecessors, (512), 155 states have return successors, (728), 503 states have call predecessors, (728), 507 states have call successors, (728) [2022-11-20 09:37:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 5066 transitions. [2022-11-20 09:37:42,148 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 5066 transitions. Word has length 123 [2022-11-20 09:37:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:37:42,149 INFO L495 AbstractCegarLoop]: Abstraction has 3105 states and 5066 transitions. [2022-11-20 09:37:42,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 09:37:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 5066 transitions. [2022-11-20 09:37:42,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 09:37:42,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:37:42,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:37:42,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 09:37:42,151 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:37:42,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:42,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1146644955, now seen corresponding path program 1 times [2022-11-20 09:37:42,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:42,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48469522] [2022-11-20 09:37:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:42,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:37:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:37:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:37:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:37:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:37:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:37:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:37:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 09:37:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 09:37:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:37:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 09:37:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 09:37:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:37:42,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:37:42,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48469522] [2022-11-20 09:37:42,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48469522] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:37:42,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868747491] [2022-11-20 09:37:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:42,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:37:42,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:42,808 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:37:42,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:37:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:37:43,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 09:37:43,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:37:43,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:37:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:37:43,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868747491] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:37:43,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:37:43,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 13 [2022-11-20 09:37:43,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174525033] [2022-11-20 09:37:43,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:37:43,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 09:37:43,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:37:43,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 09:37:43,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:37:43,802 INFO L87 Difference]: Start difference. First operand 3105 states and 5066 transitions. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 10 states have internal predecessors, (140), 6 states have call successors, (25), 8 states have call predecessors, (25), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-20 09:38:04,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:04,048 INFO L93 Difference]: Finished difference Result 8008 states and 13657 transitions. [2022-11-20 09:38:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 09:38:04,051 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 10 states have internal predecessors, (140), 6 states have call successors, (25), 8 states have call predecessors, (25), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 124 [2022-11-20 09:38:04,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:04,080 INFO L225 Difference]: With dead ends: 8008 [2022-11-20 09:38:04,080 INFO L226 Difference]: Without dead ends: 4983 [2022-11-20 09:38:04,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 09:38:04,096 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 4825 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 5594 mSolverCounterSat, 1655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4883 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 7249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1655 IncrementalHoareTripleChecker+Valid, 5594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:04,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4883 Valid, 2395 Invalid, 7249 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1655 Valid, 5594 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2022-11-20 09:38:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4983 states. [2022-11-20 09:38:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4983 to 3508. [2022-11-20 09:38:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3508 states, 2757 states have (on average 1.557127312295974) internal successors, (4293), 2887 states have internal predecessors, (4293), 567 states have call successors, (567), 138 states have call predecessors, (567), 183 states have return successors, (820), 555 states have call predecessors, (820), 562 states have call successors, (820) [2022-11-20 09:38:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3508 states to 3508 states and 5680 transitions. [2022-11-20 09:38:05,601 INFO L78 Accepts]: Start accepts. Automaton has 3508 states and 5680 transitions. Word has length 124 [2022-11-20 09:38:05,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:05,601 INFO L495 AbstractCegarLoop]: Abstraction has 3508 states and 5680 transitions. [2022-11-20 09:38:05,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 10 states have internal predecessors, (140), 6 states have call successors, (25), 8 states have call predecessors, (25), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-20 09:38:05,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3508 states and 5680 transitions. [2022-11-20 09:38:05,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 09:38:05,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:05,604 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:05,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:38:05,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0dea91c-e65d-4a74-a97e-2b9a46c53c19/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:38:05,805 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:05,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:05,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2144101129, now seen corresponding path program 1 times [2022-11-20 09:38:05,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:38:05,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446596471] [2022-11-20 09:38:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:05,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:38:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:38:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:38:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:38:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:38:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:38:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:38:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:38:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:38:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:38:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:38:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 09:38:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 09:38:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:06,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 09:38:06,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:38:06,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446596471] [2022-11-20 09:38:06,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446596471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:38:06,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:38:06,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:38:06,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858878845] [2022-11-20 09:38:06,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:38:06,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:38:06,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:38:06,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:38:06,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:38:06,490 INFO L87 Difference]: Start difference. First operand 3508 states and 5680 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 09:38:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:23,422 INFO L93 Difference]: Finished difference Result 8497 states and 14373 transitions. [2022-11-20 09:38:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 09:38:23,423 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 127 [2022-11-20 09:38:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:23,440 INFO L225 Difference]: With dead ends: 8497 [2022-11-20 09:38:23,440 INFO L226 Difference]: Without dead ends: 5073 [2022-11-20 09:38:23,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-11-20 09:38:23,449 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 3466 mSDsluCounter, 2903 mSDsCounter, 0 mSdLazyCounter, 6169 mSolverCounterSat, 1117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3523 SdHoareTripleChecker+Valid, 3475 SdHoareTripleChecker+Invalid, 7286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 6169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:23,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3523 Valid, 3475 Invalid, 7286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1117 Valid, 6169 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-11-20 09:38:23,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5073 states. [2022-11-20 09:38:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5073 to 3805. [2022-11-20 09:38:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3805 states, 3010 states have (on average 1.5471760797342193) internal successors, (4657), 3140 states have internal predecessors, (4657), 591 states have call successors, (591), 158 states have call predecessors, (591), 203 states have return successors, (820), 579 states have call predecessors, (820), 586 states have call successors, (820) [2022-11-20 09:38:25,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3805 states to 3805 states and 6068 transitions. [2022-11-20 09:38:25,004 INFO L78 Accepts]: Start accepts. Automaton has 3805 states and 6068 transitions. Word has length 127 [2022-11-20 09:38:25,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:25,004 INFO L495 AbstractCegarLoop]: Abstraction has 3805 states and 6068 transitions. [2022-11-20 09:38:25,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 09:38:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 3805 states and 6068 transitions. [2022-11-20 09:38:25,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 09:38:25,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:25,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:25,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 09:38:25,009 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:25,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:25,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1656096214, now seen corresponding path program 1 times [2022-11-20 09:38:25,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:38:25,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905914022] [2022-11-20 09:38:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:25,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:38:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:38:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:38:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:38:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:38:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:38:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:38:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:38:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:38:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:38:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 09:38:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:38:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:38:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 09:38:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:38:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 09:38:25,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:38:25,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905914022] [2022-11-20 09:38:25,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905914022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:38:25,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:38:25,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:38:25,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372796552] [2022-11-20 09:38:25,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:38:25,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:38:25,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:38:25,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:38:25,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:38:25,616 INFO L87 Difference]: Start difference. First operand 3805 states and 6068 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 09:38:50,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:50,396 INFO L93 Difference]: Finished difference Result 17117 states and 29795 transitions. [2022-11-20 09:38:50,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:38:50,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 133 [2022-11-20 09:38:50,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:50,496 INFO L225 Difference]: With dead ends: 17117 [2022-11-20 09:38:50,497 INFO L226 Difference]: Without dead ends: 13402 [2022-11-20 09:38:50,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2022-11-20 09:38:50,517 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 4774 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 5383 mSolverCounterSat, 2008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4833 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 7391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2008 IncrementalHoareTripleChecker+Valid, 5383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:50,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4833 Valid, 2602 Invalid, 7391 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2008 Valid, 5383 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2022-11-20 09:38:50,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13402 states. [2022-11-20 09:38:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13402 to 9486. [2022-11-20 09:38:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9486 states, 7249 states have (on average 1.5316595392467927) internal successors, (11103), 7657 states have internal predecessors, (11103), 1734 states have call successors, (1734), 362 states have call predecessors, (1734), 502 states have return successors, (2542), 1708 states have call predecessors, (2542), 1729 states have call successors, (2542) [2022-11-20 09:38:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9486 states to 9486 states and 15379 transitions. [2022-11-20 09:38:55,104 INFO L78 Accepts]: Start accepts. Automaton has 9486 states and 15379 transitions. Word has length 133 [2022-11-20 09:38:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:55,105 INFO L495 AbstractCegarLoop]: Abstraction has 9486 states and 15379 transitions. [2022-11-20 09:38:55,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 09:38:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 9486 states and 15379 transitions. [2022-11-20 09:38:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-20 09:38:55,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:55,108 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:55,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 09:38:55,108 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:55,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:55,109 INFO L85 PathProgramCache]: Analyzing trace with hash 646348994, now seen corresponding path program 1 times [2022-11-20 09:38:55,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:38:55,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518601973] [2022-11-20 09:38:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:55,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:38:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:38:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:38:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:38:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:38:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:38:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:38:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:38:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:38:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 09:38:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 09:38:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 09:38:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:38:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 09:38:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 09:38:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 09:38:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:38:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 09:38:55,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:38:55,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518601973] [2022-11-20 09:38:55,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518601973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:38:55,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:38:55,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:38:55,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482392610] [2022-11-20 09:38:55,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:38:55,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:38:55,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:38:55,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:38:55,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:38:55,823 INFO L87 Difference]: Start difference. First operand 9486 states and 15379 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-20 09:39:31,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:39:31,404 INFO L93 Difference]: Finished difference Result 40404 states and 74614 transitions. [2022-11-20 09:39:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:39:31,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 141 [2022-11-20 09:39:31,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:39:31,582 INFO L225 Difference]: With dead ends: 40404 [2022-11-20 09:39:31,583 INFO L226 Difference]: Without dead ends: 31000 [2022-11-20 09:39:31,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:39:31,627 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 3533 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 3462 mSolverCounterSat, 1457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3599 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 4919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1457 IncrementalHoareTripleChecker+Valid, 3462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:39:31,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3599 Valid, 2128 Invalid, 4919 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1457 Valid, 3462 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-11-20 09:39:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31000 states. [2022-11-20 09:39:43,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31000 to 20823. [2022-11-20 09:39:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20823 states, 15589 states have (on average 1.5281929565719417) internal successors, (23823), 16554 states have internal predecessors, (23823), 4174 states have call successors, (4174), 719 states have call predecessors, (4174), 1059 states have return successors, (6986), 4151 states have call predecessors, (6986), 4169 states have call successors, (6986) [2022-11-20 09:39:43,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20823 states to 20823 states and 34983 transitions. [2022-11-20 09:39:43,146 INFO L78 Accepts]: Start accepts. Automaton has 20823 states and 34983 transitions. Word has length 141 [2022-11-20 09:39:43,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:39:43,147 INFO L495 AbstractCegarLoop]: Abstraction has 20823 states and 34983 transitions. [2022-11-20 09:39:43,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-20 09:39:43,147 INFO L276 IsEmpty]: Start isEmpty. Operand 20823 states and 34983 transitions. [2022-11-20 09:39:43,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-20 09:39:43,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:39:43,152 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:39:43,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 09:39:43,152 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:39:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:39:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash -545948070, now seen corresponding path program 1 times [2022-11-20 09:39:43,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:39:43,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854911195] [2022-11-20 09:39:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:39:43,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:39:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 09:39:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:39:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:39:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:39:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:39:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:39:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 09:39:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:39:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:39:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:39:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:39:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 09:39:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 09:39:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 09:39:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:39:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 09:39:43,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:39:43,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854911195] [2022-11-20 09:39:43,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854911195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:39:43,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:39:43,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:39:43,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423304225] [2022-11-20 09:39:43,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:39:43,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:39:43,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:39:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:39:43,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:39:43,900 INFO L87 Difference]: Start difference. First operand 20823 states and 34983 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 5 states have internal predecessors, (100), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14)