./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8 --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 68493680033c9035e39b01d00eb3730662e9195bee3c7e3d4b2805e2b52b60ec --- 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-2329fc7 [2022-12-13 12:38:41,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:38:41,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:38:41,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:38:41,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:38:41,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:38:41,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:38:41,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:38:41,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:38:41,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:38:41,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:38:41,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:38:41,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:38:41,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:38:41,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:38:41,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:38:41,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:38:41,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:38:41,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:38:41,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:38:41,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:38:41,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:38:41,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:38:41,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:38:41,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:38:41,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:38:41,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:38:41,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:38:41,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:38:41,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:38:41,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:38:41,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:38:41,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:38:41,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:38:41,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:38:41,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:38:41,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:38:41,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:38:41,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:38:41,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:38:41,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:38:41,858 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:38:41,879 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:38:41,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:38:41,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:38:41,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:38:41,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:38:41,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:38:41,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:38:41,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:38:41,882 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:38:41,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:38:41,882 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:38:41,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:38:41,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:38:41,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:38:41,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:38:41,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:38:41,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:38:41,883 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:38:41,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:38:41,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:38:41,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:38:41,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:38:41,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:38:41,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:38:41,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:38:41,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:38:41,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:38:41,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:38:41,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:38:41,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:38:41,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:38:41,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:38:41,886 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:38:41,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:38:41,886 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:38:41,887 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68493680033c9035e39b01d00eb3730662e9195bee3c7e3d4b2805e2b52b60ec [2022-12-13 12:38:42,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:38:42,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:38:42,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:38:42,063 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:38:42,064 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:38:42,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c [2022-12-13 12:38:44,748 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:38:44,938 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:38:44,939 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c [2022-12-13 12:38:44,952 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/data/1c25e7242/d01354d1e4344707bbe17241affc2afc/FLAG81796be61 [2022-12-13 12:38:44,966 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/data/1c25e7242/d01354d1e4344707bbe17241affc2afc [2022-12-13 12:38:44,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:38:44,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:38:44,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:38:44,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:38:44,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:38:44,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:38:44" (1/1) ... [2022-12-13 12:38:44,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798423eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:44, skipping insertion in model container [2022-12-13 12:38:44,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:38:44" (1/1) ... [2022-12-13 12:38:44,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:38:45,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:38:45,301 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_5e21b673-8261-4b05-8acb-1c1e026b93c4/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c[66231,66244] [2022-12-13 12:38:45,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:38:45,329 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:38:45,401 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_5e21b673-8261-4b05-8acb-1c1e026b93c4/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c[66231,66244] [2022-12-13 12:38:45,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:38:45,423 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:38:45,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45 WrapperNode [2022-12-13 12:38:45,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:38:45,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:38:45,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:38:45,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:38:45,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45" (1/1) ... [2022-12-13 12:38:45,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45" (1/1) ... [2022-12-13 12:38:45,478 INFO L138 Inliner]: procedures = 91, calls = 334, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 846 [2022-12-13 12:38:45,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:38:45,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:38:45,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:38:45,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:38:45,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45" (1/1) ... [2022-12-13 12:38:45,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45" (1/1) ... [2022-12-13 12:38:45,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45" (1/1) ... [2022-12-13 12:38:45,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45" (1/1) ... [2022-12-13 12:38:45,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45" (1/1) ... [2022-12-13 12:38:45,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45" (1/1) ... [2022-12-13 12:38:45,526 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45" (1/1) ... [2022-12-13 12:38:45,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45" (1/1) ... [2022-12-13 12:38:45,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:38:45,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:38:45,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:38:45,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:38:45,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45" (1/1) ... [2022-12-13 12:38:45,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:38:45,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:38:45,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:38:45,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:38:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:38:45,609 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-13 12:38:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-13 12:38:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-13 12:38:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-13 12:38:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 12:38:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 12:38:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 12:38:45,610 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 12:38:45,610 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 12:38:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 12:38:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 12:38:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 12:38:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 12:38:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 12:38:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-13 12:38:45,611 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-13 12:38:45,611 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 12:38:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 12:38:45,612 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 12:38:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 12:38:45,612 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 12:38:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 12:38:45,612 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 12:38:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 12:38:45,612 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 12:38:45,612 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 12:38:45,613 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 12:38:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 12:38:45,613 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 12:38:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 12:38:45,613 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 12:38:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 12:38:45,613 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 12:38:45,613 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 12:38:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:38:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 12:38:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 12:38:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 12:38:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 12:38:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 12:38:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 12:38:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:38:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:38:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 12:38:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 12:38:45,713 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:38:45,715 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:38:46,434 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:38:46,445 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:38:46,445 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 12:38:46,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:38:46 BoogieIcfgContainer [2022-12-13 12:38:46,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:38:46,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:38:46,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:38:46,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:38:46,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:38:44" (1/3) ... [2022-12-13 12:38:46,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc056c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:38:46, skipping insertion in model container [2022-12-13 12:38:46,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:38:45" (2/3) ... [2022-12-13 12:38:46,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc056c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:38:46, skipping insertion in model container [2022-12-13 12:38:46,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:38:46" (3/3) ... [2022-12-13 12:38:46,456 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product25.cil.c [2022-12-13 12:38:46,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:38:46,475 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:38:46,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:38:46,539 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;@5394a0d1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:38:46,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:38:46,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 541 states, 430 states have (on average 1.7116279069767442) internal successors, (736), 451 states have internal predecessors, (736), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) [2022-12-13 12:38:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 12:38:46,559 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:38:46,560 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] [2022-12-13 12:38:46,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:38:46,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:38:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1028654670, now seen corresponding path program 1 times [2022-12-13 12:38:46,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:38:46,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328848495] [2022-12-13 12:38:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:38:46,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:38:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:46,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:38:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:38:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:46,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 12:38:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:38:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:47,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:38:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:47,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:38:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:47,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 12:38:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:38:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:38:47,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:38:47,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328848495] [2022-12-13 12:38:47,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328848495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:38:47,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:38:47,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:38:47,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507252804] [2022-12-13 12:38:47,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:38:47,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:38:47,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:38:47,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:38:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:38:47,303 INFO L87 Difference]: Start difference. First operand has 541 states, 430 states have (on average 1.7116279069767442) internal successors, (736), 451 states have internal predecessors, (736), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) 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) [2022-12-13 12:38:53,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:38:53,324 INFO L93 Difference]: Finished difference Result 1522 states and 2642 transitions. [2022-12-13 12:38:53,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:38:53,326 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 [2022-12-13 12:38:53,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:38:53,347 INFO L225 Difference]: With dead ends: 1522 [2022-12-13 12:38:53,347 INFO L226 Difference]: Without dead ends: 993 [2022-12-13 12:38:53,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:38:53,359 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1820 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 4866 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 5656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 4866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:38:53,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 2849 Invalid, 5656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [790 Valid, 4866 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-12-13 12:38:53,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-12-13 12:38:53,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 535. [2022-12-13 12:38:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 426 states have (on average 1.704225352112676) internal successors, (726), 445 states have internal predecessors, (726), 88 states have call successors, (88), 21 states have call predecessors, (88), 20 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-12-13 12:38:53,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 897 transitions. [2022-12-13 12:38:53,550 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 897 transitions. Word has length 74 [2022-12-13 12:38:53,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:38:53,551 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 897 transitions. [2022-12-13 12:38:53,551 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) [2022-12-13 12:38:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 897 transitions. [2022-12-13 12:38:53,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 12:38:53,556 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:38:53,556 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] [2022-12-13 12:38:53,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:38:53,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:38:53,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:38:53,558 INFO L85 PathProgramCache]: Analyzing trace with hash -281406215, now seen corresponding path program 1 times [2022-12-13 12:38:53,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:38:53,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728877813] [2022-12-13 12:38:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:38:53,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:38:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:53,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:38:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:38:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:53,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:38:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:38:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:53,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:38:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:53,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:38:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:38:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:54,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:38:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:38:54,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:38:54,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728877813] [2022-12-13 12:38:54,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728877813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:38:54,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:38:54,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:38:54,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177266426] [2022-12-13 12:38:54,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:38:54,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:38:54,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:38:54,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:38:54,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:38:54,014 INFO L87 Difference]: Start difference. First operand 535 states and 897 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) [2022-12-13 12:38:59,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:38:59,523 INFO L93 Difference]: Finished difference Result 1347 states and 2294 transitions. [2022-12-13 12:38:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:38:59,524 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 [2022-12-13 12:38:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:38:59,528 INFO L225 Difference]: With dead ends: 1347 [2022-12-13 12:38:59,528 INFO L226 Difference]: Without dead ends: 830 [2022-12-13 12:38:59,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:38:59,531 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 1033 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 5486 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 5768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 5486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:38:59,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 3592 Invalid, 5768 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [282 Valid, 5486 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-13 12:38:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-12-13 12:38:59,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 539. [2022-12-13 12:38:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 429 states have (on average 1.696969696969697) internal successors, (728), 448 states have internal predecessors, (728), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (85), 82 states have call predecessors, (85), 83 states have call successors, (85) [2022-12-13 12:38:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 901 transitions. [2022-12-13 12:38:59,634 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 901 transitions. Word has length 80 [2022-12-13 12:38:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:38:59,634 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 901 transitions. [2022-12-13 12:38:59,634 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) [2022-12-13 12:38:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 901 transitions. [2022-12-13 12:38:59,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-13 12:38:59,636 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:38:59,636 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] [2022-12-13 12:38:59,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:38:59,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:38:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:38:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1212777519, now seen corresponding path program 1 times [2022-12-13 12:38:59,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:38:59,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243214997] [2022-12-13 12:38:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:38:59,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:38:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:59,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:38:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:59,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:38:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:38:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 12:38:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:59,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:38:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:38:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:38:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:39:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 12:39:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:39:00,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:00,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243214997] [2022-12-13 12:39:00,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243214997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:00,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:00,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 12:39:00,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798129541] [2022-12-13 12:39:00,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:00,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:39:00,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:00,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:39:00,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:39:00,039 INFO L87 Difference]: Start difference. First operand 539 states and 901 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) [2022-12-13 12:39:12,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:39:12,249 INFO L93 Difference]: Finished difference Result 2506 states and 4409 transitions. [2022-12-13 12:39:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 12:39:12,249 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 [2022-12-13 12:39:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:39:12,259 INFO L225 Difference]: With dead ends: 2506 [2022-12-13 12:39:12,260 INFO L226 Difference]: Without dead ends: 1985 [2022-12-13 12:39:12,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2022-12-13 12:39:12,264 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 3760 mSDsluCounter, 3793 mSDsCounter, 0 mSdLazyCounter, 8776 mSolverCounterSat, 1525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3838 SdHoareTripleChecker+Valid, 4398 SdHoareTripleChecker+Invalid, 10301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1525 IncrementalHoareTripleChecker+Valid, 8776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:39:12,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3838 Valid, 4398 Invalid, 10301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1525 Valid, 8776 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-12-13 12:39:12,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-12-13 12:39:12,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1422. [2022-12-13 12:39:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1121 states have (on average 1.6565566458519179) internal successors, (1857), 1168 states have internal predecessors, (1857), 241 states have call successors, (241), 56 states have call predecessors, (241), 59 states have return successors, (275), 233 states have call predecessors, (275), 236 states have call successors, (275) [2022-12-13 12:39:12,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2373 transitions. [2022-12-13 12:39:12,526 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2373 transitions. Word has length 85 [2022-12-13 12:39:12,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:39:12,526 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 2373 transitions. [2022-12-13 12:39:12,526 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) [2022-12-13 12:39:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2373 transitions. [2022-12-13 12:39:12,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 12:39:12,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:39:12,528 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] [2022-12-13 12:39:12,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:39:12,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:39:12,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:12,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1206336703, now seen corresponding path program 1 times [2022-12-13 12:39:12,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:12,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318123692] [2022-12-13 12:39:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:12,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:12,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:39:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:12,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 12:39:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:12,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 12:39:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:12,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:12,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:12,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:39:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:13,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:39:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:39:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:39:13,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:13,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318123692] [2022-12-13 12:39:13,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318123692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:13,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:13,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 12:39:13,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745883038] [2022-12-13 12:39:13,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:13,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 12:39:13,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:13,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 12:39:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:39:13,036 INFO L87 Difference]: Start difference. First operand 1422 states and 2373 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) [2022-12-13 12:39:24,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:39:24,707 INFO L93 Difference]: Finished difference Result 3637 states and 6225 transitions. [2022-12-13 12:39:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 12:39:24,707 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 [2022-12-13 12:39:24,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:39:24,717 INFO L225 Difference]: With dead ends: 3637 [2022-12-13 12:39:24,717 INFO L226 Difference]: Without dead ends: 2059 [2022-12-13 12:39:24,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2022-12-13 12:39:24,723 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 3105 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 9267 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3168 SdHoareTripleChecker+Valid, 4702 SdHoareTripleChecker+Invalid, 10135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 9267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:39:24,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3168 Valid, 4702 Invalid, 10135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [868 Valid, 9267 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-12-13 12:39:24,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2022-12-13 12:39:25,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1497. [2022-12-13 12:39:25,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1179 states have (on average 1.6276505513146735) internal successors, (1919), 1228 states have internal predecessors, (1919), 253 states have call successors, (253), 61 states have call predecessors, (253), 64 states have return successors, (296), 243 states have call predecessors, (296), 248 states have call successors, (296) [2022-12-13 12:39:25,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2468 transitions. [2022-12-13 12:39:25,081 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2468 transitions. Word has length 94 [2022-12-13 12:39:25,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:39:25,082 INFO L495 AbstractCegarLoop]: Abstraction has 1497 states and 2468 transitions. [2022-12-13 12:39:25,082 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) [2022-12-13 12:39:25,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2468 transitions. [2022-12-13 12:39:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 12:39:25,084 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:39:25,085 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] [2022-12-13 12:39:25,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:39:25,085 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:39:25,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1251011790, now seen corresponding path program 1 times [2022-12-13 12:39:25,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:25,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215767504] [2022-12-13 12:39:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:25,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:39:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:25,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:25,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 12:39:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:25,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:39:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:25,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:25,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:39:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:25,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:39:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:25,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:39:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:25,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:39:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:39:25,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:25,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215767504] [2022-12-13 12:39:25,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215767504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:25,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:25,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:39:25,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185007664] [2022-12-13 12:39:25,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:25,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:39:25,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:25,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:39:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:39:25,424 INFO L87 Difference]: Start difference. First operand 1497 states and 2468 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) [2022-12-13 12:39:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:39:30,305 INFO L93 Difference]: Finished difference Result 3516 states and 5927 transitions. [2022-12-13 12:39:30,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:39:30,306 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 [2022-12-13 12:39:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:39:30,314 INFO L225 Difference]: With dead ends: 3516 [2022-12-13 12:39:30,314 INFO L226 Difference]: Without dead ends: 2037 [2022-12-13 12:39:30,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:39:30,318 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 961 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:39:30,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 1888 Invalid, 3234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 12:39:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2022-12-13 12:39:30,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 1497. [2022-12-13 12:39:30,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1179 states have (on average 1.626802374893978) internal successors, (1918), 1228 states have internal predecessors, (1918), 253 states have call successors, (253), 61 states have call predecessors, (253), 64 states have return successors, (296), 243 states have call predecessors, (296), 248 states have call successors, (296) [2022-12-13 12:39:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2467 transitions. [2022-12-13 12:39:30,634 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2467 transitions. Word has length 97 [2022-12-13 12:39:30,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:39:30,635 INFO L495 AbstractCegarLoop]: Abstraction has 1497 states and 2467 transitions. [2022-12-13 12:39:30,635 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) [2022-12-13 12:39:30,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2467 transitions. [2022-12-13 12:39:30,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 12:39:30,638 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:39:30,639 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] [2022-12-13 12:39:30,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:39:30,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:39:30,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1442450393, now seen corresponding path program 1 times [2022-12-13 12:39:30,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:30,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870792989] [2022-12-13 12:39:30,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:30,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:39:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:30,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:30,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:39:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:30,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:39:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:31,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:39:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:31,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:39:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:31,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:39:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:31,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:39:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:39:31,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:31,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870792989] [2022-12-13 12:39:31,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870792989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:31,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:31,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 12:39:31,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732535241] [2022-12-13 12:39:31,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:31,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:39:31,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:31,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:39:31,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:39:31,060 INFO L87 Difference]: Start difference. First operand 1497 states and 2467 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) [2022-12-13 12:39:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:39:36,811 INFO L93 Difference]: Finished difference Result 3616 states and 6194 transitions. [2022-12-13 12:39:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 12:39:36,812 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 [2022-12-13 12:39:36,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:39:36,822 INFO L225 Difference]: With dead ends: 3616 [2022-12-13 12:39:36,822 INFO L226 Difference]: Without dead ends: 2177 [2022-12-13 12:39:36,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:39:36,826 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 2116 mSDsluCounter, 3978 mSDsCounter, 0 mSdLazyCounter, 6445 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 4510 SdHoareTripleChecker+Invalid, 7074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 6445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:39:36,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 4510 Invalid, 7074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [629 Valid, 6445 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 12:39:36,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2022-12-13 12:39:37,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 1521. [2022-12-13 12:39:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1191 states have (on average 1.616288832913518) internal successors, (1925), 1248 states have internal predecessors, (1925), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 12:39:37,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2510 transitions. [2022-12-13 12:39:37,138 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2510 transitions. Word has length 98 [2022-12-13 12:39:37,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:39:37,138 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2510 transitions. [2022-12-13 12:39:37,138 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) [2022-12-13 12:39:37,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2510 transitions. [2022-12-13 12:39:37,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 12:39:37,140 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:39:37,140 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] [2022-12-13 12:39:37,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:39:37,140 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:39:37,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:37,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1053096040, now seen corresponding path program 1 times [2022-12-13 12:39:37,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:37,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869512190] [2022-12-13 12:39:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:37,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:37,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:39:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:37,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:39:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:37,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 12:39:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:37,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:37,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:39:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:37,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:39:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:37,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:39:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:39:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:39:37,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:37,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869512190] [2022-12-13 12:39:37,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869512190] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:37,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:37,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:39:37,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362328878] [2022-12-13 12:39:37,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:37,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:39:37,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:37,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:39:37,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:39:37,454 INFO L87 Difference]: Start difference. First operand 1521 states and 2510 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) [2022-12-13 12:39:42,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:39:42,007 INFO L93 Difference]: Finished difference Result 3532 states and 5982 transitions. [2022-12-13 12:39:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:39:42,008 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 [2022-12-13 12:39:42,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:39:42,023 INFO L225 Difference]: With dead ends: 3532 [2022-12-13 12:39:42,023 INFO L226 Difference]: Without dead ends: 2069 [2022-12-13 12:39:42,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:39:42,030 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1868 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:39:42,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 1751 Invalid, 3136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 12:39:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-12-13 12:39:42,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1521. [2022-12-13 12:39:42,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1191 states have (on average 1.6120906801007557) internal successors, (1920), 1248 states have internal predecessors, (1920), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 12:39:42,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2505 transitions. [2022-12-13 12:39:42,372 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2505 transitions. Word has length 99 [2022-12-13 12:39:42,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:39:42,372 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2505 transitions. [2022-12-13 12:39:42,372 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) [2022-12-13 12:39:42,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2505 transitions. [2022-12-13 12:39:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 12:39:42,375 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:39:42,375 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] [2022-12-13 12:39:42,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:39:42,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:39:42,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:42,376 INFO L85 PathProgramCache]: Analyzing trace with hash -349147019, now seen corresponding path program 1 times [2022-12-13 12:39:42,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:42,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187433863] [2022-12-13 12:39:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:42,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:39:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:42,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:42,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:39:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:42,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:39:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:42,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:39:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:42,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:39:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:42,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:39:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:42,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:39:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:39:42,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:42,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187433863] [2022-12-13 12:39:42,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187433863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:42,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:42,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:39:42,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769929291] [2022-12-13 12:39:42,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:42,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:39:42,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:42,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:39:42,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:39:42,666 INFO L87 Difference]: Start difference. First operand 1521 states and 2505 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) [2022-12-13 12:39:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:39:46,712 INFO L93 Difference]: Finished difference Result 3532 states and 5977 transitions. [2022-12-13 12:39:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:39:46,712 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 [2022-12-13 12:39:46,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:39:46,721 INFO L225 Difference]: With dead ends: 3532 [2022-12-13 12:39:46,721 INFO L226 Difference]: Without dead ends: 2069 [2022-12-13 12:39:46,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:39:46,725 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1861 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 3125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:39:46,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1933 Valid, 1742 Invalid, 3125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 12:39:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-12-13 12:39:47,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1521. [2022-12-13 12:39:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1191 states have (on average 1.6078925272879934) internal successors, (1915), 1248 states have internal predecessors, (1915), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 12:39:47,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2500 transitions. [2022-12-13 12:39:47,062 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2500 transitions. Word has length 100 [2022-12-13 12:39:47,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:39:47,062 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2500 transitions. [2022-12-13 12:39:47,062 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) [2022-12-13 12:39:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2500 transitions. [2022-12-13 12:39:47,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 12:39:47,064 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:39:47,064 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] [2022-12-13 12:39:47,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:39:47,065 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:39:47,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:47,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2078474029, now seen corresponding path program 1 times [2022-12-13 12:39:47,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:47,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46463340] [2022-12-13 12:39:47,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:47,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:39:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:47,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:47,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:39:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:47,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 12:39:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:47,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:47,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:47,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:39:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:47,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:39:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:47,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:39:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:39:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:39:47,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:47,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46463340] [2022-12-13 12:39:47,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46463340] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:47,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:47,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:39:47,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291141201] [2022-12-13 12:39:47,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:47,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:39:47,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:47,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:39:47,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:39:47,351 INFO L87 Difference]: Start difference. First operand 1521 states and 2500 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) [2022-12-13 12:39:52,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:39:52,358 INFO L93 Difference]: Finished difference Result 3532 states and 5972 transitions. [2022-12-13 12:39:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:39:52,358 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 [2022-12-13 12:39:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:39:52,371 INFO L225 Difference]: With dead ends: 3532 [2022-12-13 12:39:52,371 INFO L226 Difference]: Without dead ends: 2069 [2022-12-13 12:39:52,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:39:52,377 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1055 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 2820 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:39:52,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1876 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2820 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 12:39:52,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-12-13 12:39:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1521. [2022-12-13 12:39:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1191 states have (on average 1.603694374475231) internal successors, (1910), 1248 states have internal predecessors, (1910), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 12:39:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2495 transitions. [2022-12-13 12:39:52,742 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2495 transitions. Word has length 101 [2022-12-13 12:39:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:39:52,742 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2495 transitions. [2022-12-13 12:39:52,742 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) [2022-12-13 12:39:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2495 transitions. [2022-12-13 12:39:52,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 12:39:52,744 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:39:52,744 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] [2022-12-13 12:39:52,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:39:52,744 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:39:52,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1399177746, now seen corresponding path program 1 times [2022-12-13 12:39:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:52,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874635548] [2022-12-13 12:39:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:52,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:52,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:39:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:52,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:39:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:53,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 12:39:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:53,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:53,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:53,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:39:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:53,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:39:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:53,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:39:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:53,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:39:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:39:53,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:53,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874635548] [2022-12-13 12:39:53,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874635548] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:53,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:53,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:39:53,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989903432] [2022-12-13 12:39:53,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:53,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:39:53,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:53,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:39:53,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:39:53,092 INFO L87 Difference]: Start difference. First operand 1521 states and 2495 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) [2022-12-13 12:39:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:39:58,537 INFO L93 Difference]: Finished difference Result 3555 states and 6001 transitions. [2022-12-13 12:39:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 12:39:58,538 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 [2022-12-13 12:39:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:39:58,546 INFO L225 Difference]: With dead ends: 3555 [2022-12-13 12:39:58,546 INFO L226 Difference]: Without dead ends: 2098 [2022-12-13 12:39:58,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:39:58,550 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1029 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 5129 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3290 SdHoareTripleChecker+Invalid, 5383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 5129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:39:58,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 3290 Invalid, 5383 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [254 Valid, 5129 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 12:39:58,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2022-12-13 12:39:58,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1523. [2022-12-13 12:39:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1193 states have (on average 1.6026823134953898) internal successors, (1912), 1250 states have internal predecessors, (1912), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 12:39:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2497 transitions. [2022-12-13 12:39:58,905 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2497 transitions. Word has length 101 [2022-12-13 12:39:58,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:39:58,905 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2497 transitions. [2022-12-13 12:39:58,905 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) [2022-12-13 12:39:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2497 transitions. [2022-12-13 12:39:58,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 12:39:58,908 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:39:58,908 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] [2022-12-13 12:39:58,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:39:58,908 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:39:58,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:58,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1929946672, now seen corresponding path program 1 times [2022-12-13 12:39:58,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:58,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508697339] [2022-12-13 12:39:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:58,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:59,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:39:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:59,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:59,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:39:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:59,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:39:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:39:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:59,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:39:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:59,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:39:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:39:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:59,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:39:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:39:59,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:59,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508697339] [2022-12-13 12:39:59,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508697339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:59,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:59,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:39:59,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483243392] [2022-12-13 12:39:59,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:59,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:39:59,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:59,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:39:59,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:39:59,225 INFO L87 Difference]: Start difference. First operand 1523 states and 2497 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) [2022-12-13 12:40:03,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:40:03,480 INFO L93 Difference]: Finished difference Result 3538 states and 5973 transitions. [2022-12-13 12:40:03,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:40:03,480 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 [2022-12-13 12:40:03,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:40:03,503 INFO L225 Difference]: With dead ends: 3538 [2022-12-13 12:40:03,503 INFO L226 Difference]: Without dead ends: 2073 [2022-12-13 12:40:03,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:40:03,511 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1861 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 3077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:40:03,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1933 Valid, 1738 Invalid, 3077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 12:40:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2022-12-13 12:40:03,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1523. [2022-12-13 12:40:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1193 states have (on average 1.5984911986588433) internal successors, (1907), 1250 states have internal predecessors, (1907), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 12:40:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2492 transitions. [2022-12-13 12:40:03,971 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2492 transitions. Word has length 102 [2022-12-13 12:40:03,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:40:03,971 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2492 transitions. [2022-12-13 12:40:03,971 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) [2022-12-13 12:40:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2492 transitions. [2022-12-13 12:40:03,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 12:40:03,973 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:40:03,973 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] [2022-12-13 12:40:03,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:40:03,973 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:40:03,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:40:03,973 INFO L85 PathProgramCache]: Analyzing trace with hash -890026701, now seen corresponding path program 1 times [2022-12-13 12:40:03,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:40:03,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746230739] [2022-12-13 12:40:03,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:03,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:40:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:04,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:40:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:04,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:04,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:40:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:40:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:04,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:04,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:40:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:04,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:40:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:04,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:40:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:04,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:40:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:40:04,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:40:04,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746230739] [2022-12-13 12:40:04,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746230739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:40:04,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:40:04,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:40:04,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926820767] [2022-12-13 12:40:04,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:40:04,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:40:04,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:40:04,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:40:04,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:40:04,320 INFO L87 Difference]: Start difference. First operand 1523 states and 2492 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) [2022-12-13 12:40:09,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:40:09,636 INFO L93 Difference]: Finished difference Result 3559 states and 5998 transitions. [2022-12-13 12:40:09,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 12:40:09,636 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 [2022-12-13 12:40:09,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:40:09,644 INFO L225 Difference]: With dead ends: 3559 [2022-12-13 12:40:09,644 INFO L226 Difference]: Without dead ends: 2102 [2022-12-13 12:40:09,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:40:09,651 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1858 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 5343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:40:09,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1931 Valid, 3175 Invalid, 5343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [538 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 12:40:09,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2022-12-13 12:40:10,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 1526. [2022-12-13 12:40:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1196 states have (on average 1.5969899665551839) internal successors, (1910), 1253 states have internal predecessors, (1910), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 12:40:10,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2495 transitions. [2022-12-13 12:40:10,032 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2495 transitions. Word has length 102 [2022-12-13 12:40:10,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:40:10,032 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2495 transitions. [2022-12-13 12:40:10,032 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) [2022-12-13 12:40:10,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2495 transitions. [2022-12-13 12:40:10,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 12:40:10,034 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:40:10,034 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] [2022-12-13 12:40:10,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:40:10,034 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:40:10,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:40:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash 597491214, now seen corresponding path program 1 times [2022-12-13 12:40:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:40:10,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468201635] [2022-12-13 12:40:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:10,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:40:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:10,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:40:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:10,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:10,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:40:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:10,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:40:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:10,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:10,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:10,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:40:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:10,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:40:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:10,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:40:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:10,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:40:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:40:10,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:40:10,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468201635] [2022-12-13 12:40:10,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468201635] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:40:10,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:40:10,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:40:10,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529943910] [2022-12-13 12:40:10,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:40:10,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:40:10,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:40:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:40:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:40:10,266 INFO L87 Difference]: Start difference. First operand 1526 states and 2495 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) [2022-12-13 12:40:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:40:15,633 INFO L93 Difference]: Finished difference Result 3587 states and 6027 transitions. [2022-12-13 12:40:15,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:40:15,633 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 [2022-12-13 12:40:15,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:40:15,641 INFO L225 Difference]: With dead ends: 3587 [2022-12-13 12:40:15,641 INFO L226 Difference]: Without dead ends: 2079 [2022-12-13 12:40:15,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:40:15,645 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 936 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 2822 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 2822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:40:15,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1863 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2822 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 12:40:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2022-12-13 12:40:16,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 1526. [2022-12-13 12:40:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1196 states have (on average 1.5961538461538463) internal successors, (1909), 1253 states have internal predecessors, (1909), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 12:40:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2494 transitions. [2022-12-13 12:40:16,034 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2494 transitions. Word has length 103 [2022-12-13 12:40:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:40:16,035 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2494 transitions. [2022-12-13 12:40:16,035 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) [2022-12-13 12:40:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2494 transitions. [2022-12-13 12:40:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 12:40:16,036 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:40:16,036 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] [2022-12-13 12:40:16,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:40:16,036 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:40:16,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:40:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash -570705041, now seen corresponding path program 1 times [2022-12-13 12:40:16,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:40:16,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882124706] [2022-12-13 12:40:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:16,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:40:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:40:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:40:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:40:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:16,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:16,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:40:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:16,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:40:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:16,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:40:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:16,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:40:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:40:16,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:40:16,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882124706] [2022-12-13 12:40:16,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882124706] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:40:16,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:40:16,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:40:16,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470175120] [2022-12-13 12:40:16,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:40:16,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:40:16,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:40:16,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:40:16,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:40:16,351 INFO L87 Difference]: Start difference. First operand 1526 states and 2494 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) [2022-12-13 12:40:22,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:40:22,345 INFO L93 Difference]: Finished difference Result 3547 states and 5977 transitions. [2022-12-13 12:40:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:40:22,346 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 [2022-12-13 12:40:22,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:40:22,354 INFO L225 Difference]: With dead ends: 3547 [2022-12-13 12:40:22,355 INFO L226 Difference]: Without dead ends: 2069 [2022-12-13 12:40:22,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:40:22,358 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 1436 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 4978 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 5368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 4978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:40:22,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 3198 Invalid, 5368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [390 Valid, 4978 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-13 12:40:22,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-12-13 12:40:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1518. [2022-12-13 12:40:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1188 states have (on average 1.5976430976430978) internal successors, (1898), 1245 states have internal predecessors, (1898), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 12:40:22,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2483 transitions. [2022-12-13 12:40:22,854 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2483 transitions. Word has length 103 [2022-12-13 12:40:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:40:22,855 INFO L495 AbstractCegarLoop]: Abstraction has 1518 states and 2483 transitions. [2022-12-13 12:40:22,855 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) [2022-12-13 12:40:22,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2483 transitions. [2022-12-13 12:40:22,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 12:40:22,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:40:22,856 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] [2022-12-13 12:40:22,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:40:22,856 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:40:22,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:40:22,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1964348434, now seen corresponding path program 1 times [2022-12-13 12:40:22,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:40:22,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545904877] [2022-12-13 12:40:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:22,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:40:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:40:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:23,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:40:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:23,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 12:40:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:23,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:23,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:23,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:40:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:40:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:40:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:23,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:40:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:40:23,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:40:23,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545904877] [2022-12-13 12:40:23,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545904877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:40:23,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:40:23,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:40:23,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064466853] [2022-12-13 12:40:23,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:40:23,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:40:23,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:40:23,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:40:23,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:40:23,216 INFO L87 Difference]: Start difference. First operand 1518 states and 2483 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) [2022-12-13 12:40:29,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:40:29,933 INFO L93 Difference]: Finished difference Result 3547 states and 5973 transitions. [2022-12-13 12:40:29,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 12:40:29,933 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 [2022-12-13 12:40:29,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:40:29,943 INFO L225 Difference]: With dead ends: 3547 [2022-12-13 12:40:29,943 INFO L226 Difference]: Without dead ends: 2090 [2022-12-13 12:40:29,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:40:29,947 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1000 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 4963 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 5215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 4963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:40:29,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 3319 Invalid, 5215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 4963 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-12-13 12:40:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-12-13 12:40:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1522. [2022-12-13 12:40:30,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1192 states have (on average 1.5956375838926173) internal successors, (1902), 1249 states have internal predecessors, (1902), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 12:40:30,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2487 transitions. [2022-12-13 12:40:30,370 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2487 transitions. Word has length 103 [2022-12-13 12:40:30,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:40:30,370 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 2487 transitions. [2022-12-13 12:40:30,370 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) [2022-12-13 12:40:30,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2487 transitions. [2022-12-13 12:40:30,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 12:40:30,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:40:30,371 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] [2022-12-13 12:40:30,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:40:30,372 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:40:30,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:40:30,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1695619187, now seen corresponding path program 1 times [2022-12-13 12:40:30,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:40:30,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242942892] [2022-12-13 12:40:30,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:30,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:40:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:30,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:40:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:30,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:30,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:40:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:30,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 12:40:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:30,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:40:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:40:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:30,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:40:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:40:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:40:30,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:40:30,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242942892] [2022-12-13 12:40:30,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242942892] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:40:30,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:40:30,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:40:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499934192] [2022-12-13 12:40:30,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:40:30,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:40:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:40:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:40:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:40:30,690 INFO L87 Difference]: Start difference. First operand 1522 states and 2487 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) [2022-12-13 12:40:36,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:40:36,788 INFO L93 Difference]: Finished difference Result 3555 states and 5979 transitions. [2022-12-13 12:40:36,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 12:40:36,789 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 [2022-12-13 12:40:36,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:40:36,796 INFO L225 Difference]: With dead ends: 3555 [2022-12-13 12:40:36,796 INFO L226 Difference]: Without dead ends: 2098 [2022-12-13 12:40:36,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:40:36,800 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 991 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 4975 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 5228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 4975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:40:36,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 3300 Invalid, 5228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [253 Valid, 4975 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 12:40:36,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2022-12-13 12:40:37,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1527. [2022-12-13 12:40:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1197 states have (on average 1.5931495405179616) internal successors, (1907), 1254 states have internal predecessors, (1907), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-12-13 12:40:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2492 transitions. [2022-12-13 12:40:37,224 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2492 transitions. Word has length 104 [2022-12-13 12:40:37,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:40:37,224 INFO L495 AbstractCegarLoop]: Abstraction has 1527 states and 2492 transitions. [2022-12-13 12:40:37,224 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) [2022-12-13 12:40:37,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2492 transitions. [2022-12-13 12:40:37,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 12:40:37,225 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:40:37,225 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] [2022-12-13 12:40:37,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:40:37,225 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:40:37,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:40:37,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2055833625, now seen corresponding path program 1 times [2022-12-13 12:40:37,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:40:37,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871062892] [2022-12-13 12:40:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:37,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:40:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:40:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:37,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:40:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:40:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:37,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:37,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:40:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:40:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:40:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:37,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:40:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:37,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:40:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:40:37,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:40:37,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871062892] [2022-12-13 12:40:37,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871062892] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:40:37,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:40:37,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 12:40:37,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127934016] [2022-12-13 12:40:37,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:40:37,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 12:40:37,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:40:37,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 12:40:37,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:40:37,645 INFO L87 Difference]: Start difference. First operand 1527 states and 2492 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) [2022-12-13 12:41:02,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:41:02,277 INFO L93 Difference]: Finished difference Result 6020 states and 10491 transitions. [2022-12-13 12:41:02,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 12:41:02,278 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 [2022-12-13 12:41:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:41:02,293 INFO L225 Difference]: With dead ends: 6020 [2022-12-13 12:41:02,293 INFO L226 Difference]: Without dead ends: 4571 [2022-12-13 12:41:02,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=891, Invalid=4659, Unknown=0, NotChecked=0, Total=5550 [2022-12-13 12:41:02,300 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 11496 mSDsluCounter, 6359 mSDsCounter, 0 mSdLazyCounter, 16944 mSolverCounterSat, 4732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11571 SdHoareTripleChecker+Valid, 7223 SdHoareTripleChecker+Invalid, 21676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4732 IncrementalHoareTripleChecker+Valid, 16944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:41:02,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11571 Valid, 7223 Invalid, 21676 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4732 Valid, 16944 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2022-12-13 12:41:02,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2022-12-13 12:41:03,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 3170. [2022-12-13 12:41:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3170 states, 2488 states have (on average 1.5807877813504823) internal successors, (3933), 2606 states have internal predecessors, (3933), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2022-12-13 12:41:03,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 5156 transitions. [2022-12-13 12:41:03,277 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 5156 transitions. Word has length 105 [2022-12-13 12:41:03,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:41:03,277 INFO L495 AbstractCegarLoop]: Abstraction has 3170 states and 5156 transitions. [2022-12-13 12:41:03,277 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) [2022-12-13 12:41:03,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 5156 transitions. [2022-12-13 12:41:03,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 12:41:03,279 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:41:03,279 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] [2022-12-13 12:41:03,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:41:03,279 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:41:03,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:03,279 INFO L85 PathProgramCache]: Analyzing trace with hash 796437532, now seen corresponding path program 1 times [2022-12-13 12:41:03,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:03,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709468723] [2022-12-13 12:41:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:03,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:03,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:41:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:41:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:41:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:03,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:41:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:03,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:41:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:03,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:41:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:41:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:03,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:41:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:03,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:41:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:03,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:41:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:41:03,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:03,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709468723] [2022-12-13 12:41:03,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709468723] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:41:03,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348462348] [2022-12-13 12:41:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:03,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:41:03,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:41:03,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:41:03,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:41:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:03,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:41:03,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:41:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:41:04,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:41:04,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348462348] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:04,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:41:04,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-12-13 12:41:04,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045412318] [2022-12-13 12:41:04,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:04,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:41:04,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:04,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:41:04,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:41:04,026 INFO L87 Difference]: Start difference. First operand 3170 states and 5156 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) [2022-12-13 12:41:05,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:41:05,409 INFO L93 Difference]: Finished difference Result 3286 states and 5343 transitions. [2022-12-13 12:41:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:41:05,410 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 [2022-12-13 12:41:05,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:41:05,424 INFO L225 Difference]: With dead ends: 3286 [2022-12-13 12:41:05,424 INFO L226 Difference]: Without dead ends: 3271 [2022-12-13 12:41:05,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:41:05,426 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 789 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:41:05,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 2179 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:41:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2022-12-13 12:41:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3179. [2022-12-13 12:41:06,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 2497 states have (on average 1.578694433319984) internal successors, (3942), 2615 states have internal predecessors, (3942), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2022-12-13 12:41:06,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5165 transitions. [2022-12-13 12:41:06,386 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5165 transitions. Word has length 106 [2022-12-13 12:41:06,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:41:06,386 INFO L495 AbstractCegarLoop]: Abstraction has 3179 states and 5165 transitions. [2022-12-13 12:41:06,386 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) [2022-12-13 12:41:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5165 transitions. [2022-12-13 12:41:06,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 12:41:06,388 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:41:06,388 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] [2022-12-13 12:41:06,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:41:06,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 12:41:06,589 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:41:06,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:06,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1686453129, now seen corresponding path program 1 times [2022-12-13 12:41:06,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:06,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587434994] [2022-12-13 12:41:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:06,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:41:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:41:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:06,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:41:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:06,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:41:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:41:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:06,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:41:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:41:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:06,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:41:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:06,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:41:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:06,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:41:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:06,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 12:41:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 12:41:06,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:06,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587434994] [2022-12-13 12:41:06,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587434994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:06,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:06,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:41:06,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449751719] [2022-12-13 12:41:06,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:06,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:41:06,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:06,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:41:06,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:41:06,935 INFO L87 Difference]: Start difference. First operand 3179 states and 5165 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) [2022-12-13 12:41:17,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:41:17,702 INFO L93 Difference]: Finished difference Result 4299 states and 7291 transitions. [2022-12-13 12:41:17,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 12:41:17,702 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 [2022-12-13 12:41:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:41:17,717 INFO L225 Difference]: With dead ends: 4299 [2022-12-13 12:41:17,717 INFO L226 Difference]: Without dead ends: 4284 [2022-12-13 12:41:17,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2022-12-13 12:41:17,719 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 4061 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 4952 mSolverCounterSat, 1388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4128 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 6340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1388 IncrementalHoareTripleChecker+Valid, 4952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:41:17,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4128 Valid, 2548 Invalid, 6340 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1388 Valid, 4952 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-12-13 12:41:17,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2022-12-13 12:41:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 3179. [2022-12-13 12:41:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 2497 states have (on average 1.5758910692831398) internal successors, (3935), 2615 states have internal predecessors, (3935), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2022-12-13 12:41:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5158 transitions. [2022-12-13 12:41:18,725 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5158 transitions. Word has length 112 [2022-12-13 12:41:18,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:41:18,726 INFO L495 AbstractCegarLoop]: Abstraction has 3179 states and 5158 transitions. [2022-12-13 12:41:18,726 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) [2022-12-13 12:41:18,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5158 transitions. [2022-12-13 12:41:18,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 12:41:18,728 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:41:18,728 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] [2022-12-13 12:41:18,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 12:41:18,728 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:41:18,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:18,729 INFO L85 PathProgramCache]: Analyzing trace with hash 670072873, now seen corresponding path program 1 times [2022-12-13 12:41:18,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:18,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338448829] [2022-12-13 12:41:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:18,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:18,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:41:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:18,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:41:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:18,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:41:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:41:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:41:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:41:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:41:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:19,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:41:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:19,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:41:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:19,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:41:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 12:41:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:41:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 12:41:19,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:19,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338448829] [2022-12-13 12:41:19,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338448829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:19,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:19,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 12:41:19,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188308951] [2022-12-13 12:41:19,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:19,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:41:19,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:19,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:41:19,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:41:19,098 INFO L87 Difference]: Start difference. First operand 3179 states and 5158 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) [2022-12-13 12:41:35,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:41:35,639 INFO L93 Difference]: Finished difference Result 8203 states and 13920 transitions. [2022-12-13 12:41:35,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 12:41:35,639 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 [2022-12-13 12:41:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:41:35,660 INFO L225 Difference]: With dead ends: 8203 [2022-12-13 12:41:35,660 INFO L226 Difference]: Without dead ends: 5110 [2022-12-13 12:41:35,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=370, Invalid=1610, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 12:41:35,669 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 6171 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 8827 mSolverCounterSat, 2919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6172 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 11746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2919 IncrementalHoareTripleChecker+Valid, 8827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:41:35,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6172 Valid, 2616 Invalid, 11746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2919 Valid, 8827 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-12-13 12:41:35,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2022-12-13 12:41:36,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 3195. [2022-12-13 12:41:36,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 2509 states have (on average 1.5695496213630928) internal successors, (3938), 2627 states have internal predecessors, (3938), 524 states have call successors, (524), 124 states have call predecessors, (524), 161 states have return successors, (740), 515 states have call predecessors, (740), 519 states have call successors, (740) [2022-12-13 12:41:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 5202 transitions. [2022-12-13 12:41:36,767 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 5202 transitions. Word has length 123 [2022-12-13 12:41:36,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:41:36,767 INFO L495 AbstractCegarLoop]: Abstraction has 3195 states and 5202 transitions. [2022-12-13 12:41:36,767 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) [2022-12-13 12:41:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 5202 transitions. [2022-12-13 12:41:36,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-13 12:41:36,769 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:41:36,769 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] [2022-12-13 12:41:36,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 12:41:36,769 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:41:36,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:36,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2141901642, now seen corresponding path program 1 times [2022-12-13 12:41:36,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:36,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588472754] [2022-12-13 12:41:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:36,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:41:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:36,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:41:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:36,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:41:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:37,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:41:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:37,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:41:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:37,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:41:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:37,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:41:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:37,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:41:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:41:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:37,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:41:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:37,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 12:41:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:37,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:41:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 12:41:37,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:37,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588472754] [2022-12-13 12:41:37,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588472754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:37,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:37,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:41:37,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133530661] [2022-12-13 12:41:37,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:37,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:41:37,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:37,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:41:37,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:41:37,154 INFO L87 Difference]: Start difference. First operand 3195 states and 5202 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 12:42:06,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:42:06,405 INFO L93 Difference]: Finished difference Result 15838 states and 28431 transitions. [2022-12-13 12:42:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-13 12:42:06,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2022-12-13 12:42:06,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:42:06,468 INFO L225 Difference]: With dead ends: 15838 [2022-12-13 12:42:06,468 INFO L226 Difference]: Without dead ends: 12729 [2022-12-13 12:42:06,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=539, Invalid=1813, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 12:42:06,485 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 9181 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 10221 mSolverCounterSat, 5309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9248 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 15530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5309 IncrementalHoareTripleChecker+Valid, 10221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:42:06,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9248 Valid, 3322 Invalid, 15530 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5309 Valid, 10221 Invalid, 0 Unknown, 0 Unchecked, 18.6s Time] [2022-12-13 12:42:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12729 states. [2022-12-13 12:42:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12729 to 8274. [2022-12-13 12:42:10,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8274 states, 6213 states have (on average 1.5530339610494126) internal successors, (9649), 6596 states have internal predecessors, (9649), 1711 states have call successors, (1711), 242 states have call predecessors, (1711), 349 states have return successors, (2690), 1687 states have call predecessors, (2690), 1706 states have call successors, (2690) [2022-12-13 12:42:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8274 states to 8274 states and 14050 transitions. [2022-12-13 12:42:10,797 INFO L78 Accepts]: Start accepts. Automaton has 8274 states and 14050 transitions. Word has length 124 [2022-12-13 12:42:10,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:42:10,797 INFO L495 AbstractCegarLoop]: Abstraction has 8274 states and 14050 transitions. [2022-12-13 12:42:10,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 12:42:10,797 INFO L276 IsEmpty]: Start isEmpty. Operand 8274 states and 14050 transitions. [2022-12-13 12:42:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 12:42:10,800 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:42:10,800 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] [2022-12-13 12:42:10,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 12:42:10,800 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:42:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:42:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1286167422, now seen corresponding path program 1 times [2022-12-13 12:42:10,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:42:10,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630724323] [2022-12-13 12:42:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:42:10,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:42:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:42:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:10,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:42:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:10,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:42:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:11,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:42:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:42:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:11,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:42:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:42:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:11,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 12:42:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:11,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:42:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:11,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 12:42:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:11,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 12:42:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:11,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:42:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:11,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 12:42:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 12:42:11,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:42:11,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630724323] [2022-12-13 12:42:11,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630724323] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:42:11,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691092851] [2022-12-13 12:42:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:42:11,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:42:11,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:42:11,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:42:11,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:42:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:11,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 12:42:11,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:42:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 12:42:11,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:42:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 12:42:11,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691092851] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:42:11,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:42:11,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 13 [2022-12-13 12:42:11,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896363837] [2022-12-13 12:42:11,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:42:11,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 12:42:11,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:42:11,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 12:42:11,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:42:11,689 INFO L87 Difference]: Start difference. First operand 8274 states and 14050 transitions. Second operand has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-12-13 12:42:30,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:42:30,407 INFO L93 Difference]: Finished difference Result 21393 states and 38173 transitions. [2022-12-13 12:42:30,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 12:42:30,408 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 132 [2022-12-13 12:42:30,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:42:30,472 INFO L225 Difference]: With dead ends: 21393 [2022-12-13 12:42:30,472 INFO L226 Difference]: Without dead ends: 13201 [2022-12-13 12:42:30,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 12:42:30,502 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 6274 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 2188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6335 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 7342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2188 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:42:30,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6335 Valid, 2454 Invalid, 7342 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2188 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-12-13 12:42:30,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13201 states. [2022-12-13 12:42:34,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13201 to 9236. [2022-12-13 12:42:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9236 states, 6963 states have (on average 1.5430130690794197) internal successors, (10744), 7379 states have internal predecessors, (10744), 1863 states have call successors, (1863), 282 states have call predecessors, (1863), 409 states have return successors, (2957), 1829 states have call predecessors, (2957), 1858 states have call successors, (2957) [2022-12-13 12:42:34,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 15564 transitions. [2022-12-13 12:42:34,832 INFO L78 Accepts]: Start accepts. Automaton has 9236 states and 15564 transitions. Word has length 132 [2022-12-13 12:42:34,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:42:34,832 INFO L495 AbstractCegarLoop]: Abstraction has 9236 states and 15564 transitions. [2022-12-13 12:42:34,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-12-13 12:42:34,833 INFO L276 IsEmpty]: Start isEmpty. Operand 9236 states and 15564 transitions. [2022-12-13 12:42:34,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 12:42:34,835 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:42:34,836 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-12-13 12:42:34,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:42:35,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 12:42:35,037 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:42:35,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:42:35,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2102356101, now seen corresponding path program 1 times [2022-12-13 12:42:35,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:42:35,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328879822] [2022-12-13 12:42:35,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:42:35,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:42:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:42:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:42:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:42:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:42:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:42:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:42:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:42:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:42:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:42:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:42:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:42:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:42:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 12:42:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 12:42:35,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:42:35,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328879822] [2022-12-13 12:42:35,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328879822] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:42:35,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:42:35,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:42:35,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245228431] [2022-12-13 12:42:35,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:42:35,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:42:35,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:42:35,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:42:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:42:35,407 INFO L87 Difference]: Start difference. First operand 9236 states and 15564 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 12:42:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:42:53,554 INFO L93 Difference]: Finished difference Result 22539 states and 39910 transitions. [2022-12-13 12:42:53,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 12:42:53,555 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 135 [2022-12-13 12:42:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:42:53,613 INFO L225 Difference]: With dead ends: 22539 [2022-12-13 12:42:53,613 INFO L226 Difference]: Without dead ends: 13389 [2022-12-13 12:42:53,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-12-13 12:42:53,643 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 3496 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 6066 mSolverCounterSat, 1105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3556 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 7171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1105 IncrementalHoareTripleChecker+Valid, 6066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:42:53,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3556 Valid, 3581 Invalid, 7171 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1105 Valid, 6066 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-12-13 12:42:53,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13389 states. [2022-12-13 12:42:58,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13389 to 9830. [2022-12-13 12:42:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9830 states, 7469 states have (on average 1.5356808140313294) internal successors, (11470), 7885 states have internal predecessors, (11470), 1911 states have call successors, (1911), 322 states have call predecessors, (1911), 449 states have return successors, (2921), 1877 states have call predecessors, (2921), 1906 states have call successors, (2921) [2022-12-13 12:42:58,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9830 states to 9830 states and 16302 transitions. [2022-12-13 12:42:58,049 INFO L78 Accepts]: Start accepts. Automaton has 9830 states and 16302 transitions. Word has length 135 [2022-12-13 12:42:58,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:42:58,049 INFO L495 AbstractCegarLoop]: Abstraction has 9830 states and 16302 transitions. [2022-12-13 12:42:58,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 12:42:58,049 INFO L276 IsEmpty]: Start isEmpty. Operand 9830 states and 16302 transitions. [2022-12-13 12:42:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 12:42:58,052 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:42:58,052 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, 1] [2022-12-13 12:42:58,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 12:42:58,053 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:42:58,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:42:58,053 INFO L85 PathProgramCache]: Analyzing trace with hash 206783943, now seen corresponding path program 1 times [2022-12-13 12:42:58,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:42:58,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939221996] [2022-12-13 12:42:58,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:42:58,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:42:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:42:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:42:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:42:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:42:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:42:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:42:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:42:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:42:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 12:42:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 12:42:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 12:42:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:42:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:42:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 12:42:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 12:42:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 12:42:58,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:42:58,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939221996] [2022-12-13 12:42:58,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939221996] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:42:58,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681818953] [2022-12-13 12:42:58,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:42:58,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:42:58,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:42:58,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:42:58,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:42:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:58,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:42:58,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:42:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 12:42:58,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:42:58,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681818953] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:42:58,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:42:58,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-12-13 12:42:58,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223723774] [2022-12-13 12:42:58,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:42:58,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:42:58,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:42:58,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:42:58,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:42:58,624 INFO L87 Difference]: Start difference. First operand 9830 states and 16302 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 12:43:08,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:43:08,351 INFO L93 Difference]: Finished difference Result 26932 states and 45319 transitions. [2022-12-13 12:43:08,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:43:08,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 142 [2022-12-13 12:43:08,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:43:08,424 INFO L225 Difference]: With dead ends: 26932 [2022-12-13 12:43:08,424 INFO L226 Difference]: Without dead ends: 17142 [2022-12-13 12:43:08,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:43:08,457 INFO L413 NwaCegarLoop]: 1405 mSDtfsCounter, 1038 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:43:08,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 3220 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 12:43:08,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17142 states. [2022-12-13 12:43:16,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17142 to 16345. [2022-12-13 12:43:16,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16345 states, 12242 states have (on average 1.55285084136579) internal successors, (19010), 12986 states have internal predecessors, (19010), 3397 states have call successors, (3397), 544 states have call predecessors, (3397), 705 states have return successors, (4801), 3367 states have call predecessors, (4801), 3392 states have call successors, (4801) [2022-12-13 12:43:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16345 states to 16345 states and 27208 transitions. [2022-12-13 12:43:16,312 INFO L78 Accepts]: Start accepts. Automaton has 16345 states and 27208 transitions. Word has length 142 [2022-12-13 12:43:16,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:43:16,312 INFO L495 AbstractCegarLoop]: Abstraction has 16345 states and 27208 transitions. [2022-12-13 12:43:16,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 12:43:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 16345 states and 27208 transitions. [2022-12-13 12:43:16,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-13 12:43:16,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:43:16,317 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] [2022-12-13 12:43:16,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:43:16,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e21b673-8261-4b05-8acb-1c1e026b93c4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 12:43:16,518 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:43:16,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:43:16,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1118922125, now seen corresponding path program 1 times [2022-12-13 12:43:16,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:43:16,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309643226] [2022-12-13 12:43:16,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:43:16,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:43:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:43:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:43:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:43:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:43:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:43:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:43:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:43:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:43:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:43:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:43:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:43:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:43:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 12:43:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 12:43:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 12:43:16,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:43:16,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309643226] [2022-12-13 12:43:16,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309643226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:43:16,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:43:16,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:43:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455747421] [2022-12-13 12:43:16,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:43:16,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:43:16,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:43:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:43:16,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:43:16,936 INFO L87 Difference]: Start difference. First operand 16345 states and 27208 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 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) [2022-12-13 12:44:02,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:44:02,100 INFO L93 Difference]: Finished difference Result 70589 states and 132900 transitions. [2022-12-13 12:44:02,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 12:44:02,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 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) Word has length 139 [2022-12-13 12:44:02,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:44:02,541 INFO L225 Difference]: With dead ends: 70589 [2022-12-13 12:44:02,541 INFO L226 Difference]: Without dead ends: 54330 [2022-12-13 12:44:02,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:44:02,669 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 3726 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 3434 mSolverCounterSat, 1391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3795 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 4825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1391 IncrementalHoareTripleChecker+Valid, 3434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:44:02,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3795 Valid, 2472 Invalid, 4825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1391 Valid, 3434 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-12-13 12:44:02,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54330 states. [2022-12-13 12:44:21,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54330 to 35329. [2022-12-13 12:44:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35329 states, 26090 states have (on average 1.5468378689152933) internal successors, (40357), 27783 states have internal predecessors, (40357), 7726 states have call successors, (7726), 1083 states have call predecessors, (7726), 1512 states have return successors, (12628), 7708 states have call predecessors, (12628), 7721 states have call successors, (12628) [2022-12-13 12:44:21,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35329 states to 35329 states and 60711 transitions. [2022-12-13 12:44:21,391 INFO L78 Accepts]: Start accepts. Automaton has 35329 states and 60711 transitions. Word has length 139 [2022-12-13 12:44:21,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:44:21,391 INFO L495 AbstractCegarLoop]: Abstraction has 35329 states and 60711 transitions. [2022-12-13 12:44:21,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 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) [2022-12-13 12:44:21,391 INFO L276 IsEmpty]: Start isEmpty. Operand 35329 states and 60711 transitions. [2022-12-13 12:44:21,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 12:44:21,398 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:44:21,398 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] [2022-12-13 12:44:21,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 12:44:21,398 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:44:21,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:44:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash -327267749, now seen corresponding path program 1 times [2022-12-13 12:44:21,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:44:21,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915372062] [2022-12-13 12:44:21,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:44:21,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:44:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:44:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:44:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:44:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:44:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:44:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:44:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:44:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:44:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:44:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:44:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:44:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:44:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 12:44:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 12:44:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 12:44:21,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:44:21,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915372062] [2022-12-13 12:44:21,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915372062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:44:21,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:44:21,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:44:21,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260860108] [2022-12-13 12:44:21,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:44:21,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:44:21,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:44:21,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:44:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:44:21,821 INFO L87 Difference]: Start difference. First operand 35329 states and 60711 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) [2022-12-13 12:45:58,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:45:58,558 INFO L93 Difference]: Finished difference Result 156771 states and 328975 transitions. [2022-12-13 12:45:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 12:45:58,559 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 140 [2022-12-13 12:45:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:45:59,855 INFO L225 Difference]: With dead ends: 156771 [2022-12-13 12:45:59,855 INFO L226 Difference]: Without dead ends: 121520 [2022-12-13 12:46:00,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:46:00,210 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 5243 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 1797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5316 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 4803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1797 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:46:00,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5316 Valid, 2226 Invalid, 4803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1797 Valid, 3006 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-12-13 12:46:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121520 states. [2022-12-13 12:46:47,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121520 to 79128. [2022-12-13 12:46:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79128 states, 57281 states have (on average 1.5373509540685393) internal successors, (88061), 61359 states have internal predecessors, (88061), 18557 states have call successors, (18557), 2153 states have call predecessors, (18557), 3289 states have return successors, (36349), 18639 states have call predecessors, (36349), 18552 states have call successors, (36349) [2022-12-13 12:46:48,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79128 states to 79128 states and 142967 transitions. [2022-12-13 12:46:48,153 INFO L78 Accepts]: Start accepts. Automaton has 79128 states and 142967 transitions. Word has length 140 [2022-12-13 12:46:48,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:46:48,153 INFO L495 AbstractCegarLoop]: Abstraction has 79128 states and 142967 transitions. [2022-12-13 12:46:48,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-12-13 12:46:48,153 INFO L276 IsEmpty]: Start isEmpty. Operand 79128 states and 142967 transitions. [2022-12-13 12:46:48,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 12:46:48,164 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:46:48,164 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, 1, 1] [2022-12-13 12:46:48,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 12:46:48,164 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:46:48,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:46:48,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1734608620, now seen corresponding path program 1 times [2022-12-13 12:46:48,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:46:48,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30738255] [2022-12-13 12:46:48,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:46:48,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:46:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:46:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:46:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:46:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:46:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:46:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:46:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 12:46:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:46:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:46:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 12:46:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 12:46:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:46:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 12:46:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:46:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 12:46:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:46:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 12:46:48,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:46:48,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30738255] [2022-12-13 12:46:48,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30738255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:46:48,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:46:48,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:46:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995848536] [2022-12-13 12:46:48,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:46:48,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:46:48,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:46:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:46:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:46:48,528 INFO L87 Difference]: Start difference. First operand 79128 states and 142967 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 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) [2022-12-13 12:50:57,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:50:57,478 INFO L93 Difference]: Finished difference Result 374374 states and 892588 transitions. [2022-12-13 12:50:57,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 12:50:57,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 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 143 [2022-12-13 12:50:57,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:51:02,722 INFO L225 Difference]: With dead ends: 374374 [2022-12-13 12:51:02,722 INFO L226 Difference]: Without dead ends: 295332 [2022-12-13 12:51:04,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:51:04,002 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 3088 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 3531 mSolverCounterSat, 1241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3161 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 4772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1241 IncrementalHoareTripleChecker+Valid, 3531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:51:04,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3161 Valid, 2372 Invalid, 4772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1241 Valid, 3531 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-12-13 12:51:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295332 states.